author4
3Instructables12,373Views194CommentsWhitehall, Michigan
I'm a lifer and enjoy learning, reading, listening, talking, traveling, museums, the outdoors, repairing/re-using/re-purposing, finding bargains, free things, working and universities. I've earned two Bachelors of Science degrees. The first in Chemistry A.C.S. cert. Biochem. and the second Computer Information System with an emphasis on Programming that was originally Systems Analysis & Application Development. I've earned other certifications & licenses including my NSP OEC Technici…

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  • DIY Textured Cement-Styrofoam Planter

    Neat to see. I've seen mission work where this type mix, for more of a recycling styrofoam paradigm of thinking, was used to make building bricks. Albeit, not structural brick... more an insulating cost effective design. These mixes with like perlite and vermiculite I've seen for balusters and railing also. Thanks for sharing!

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  • Gabion Stone Retaining Wall, Hillside Pond Optional

    I've seen in MO where they just dig a pond on the hillside and what is dugout is used at the outer retaining wall for the pond built up a little more sloping like the gabion. Basically, all the clay sand or whatever that clayier soil is. Not other materials required. My guess if sandy or gravelly soil... then add the clay layer so the expense is in the clay layer or even maybe a pond liner material. Thinking can probably even use like a portland rammed earth outer wall or lining. Figured I'd toss out some ideas on the mind post reading the comments regarding cost effective ways that are longer term. Thanks for sharing!

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  • Concrete Bench Inspired by Roman Aqueducts

    Awesome design work! Really neat seeing performed. Thinking will look neat when aged too. Thanks for sharing!

    Will a recipricating saw without a blade on the side be suitable?

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  • Easily Getting Rid of Dead Spots on Your Lawn, Effortlessly!

    Dried blood after a rain, since may need to be re-applied and works in the same way as adding nutrients to the ground, and on trees or plants too. You can also buy like maybe 4 shakers of red pepper (I've not tried cayenne, though think less will do) and blend in a coffee grinder. I've sprayed castor oil thinned with rubbing alcohol around the yard perimeter for moles and works good. I got the formula, 89% dried blood and 11% red pepper, from Uncle Ian's. Cheaper to buy the Dried Blood or Blood Meal and Pepper in some places, otherwise the Uncle Ian's 5.5lb bag seems more cost effective. https://www.menards.com/main/outdoors/gardening/lawn-plant-care/plant-food/burpee-reg-natural-organic-trade-blood-meal-3-lb/bp3bl/p-1499754690757.htm

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  • DIY Levelawn/Lawn Lute/Leveling Rake

    Neat! I've stashed away some free bed frames, I've found on free online listings that, I'm planning to use for a rider tow behind scale. Thinking 48 inch and will keep this in mind for maybe later touch ups. Going to check with the Fab Lab now also to see if they have the welder available for the next open lab. Thanks for sharing!

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  • How to "Weld" Aluminum Without a Welder

    @Technoaussie I'm wondering about methods for taking a non-functioning horizontal shaft pressure washer mount ear and grinding to fit the ground seat of a functional horizontal shaft pressure washer mount ear that was broken off during shipping and missing. Thinking welding will be best. Though wondering about adhesives now reading into this. Thinking most of the load will be the rotational force and an adhesive may be all that is required. However, what's the best COTS is another question to deal with the thermal expansion and contraction? Figure summer operation spring, summer and fall operation primarily in Michigan... though the extreme temperature of the cast aluminum engine block transferring heat to the cast aluminum (I guess at least) pressure washer casing is more my concern.…

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    @Technoaussie I'm wondering about methods for taking a non-functioning horizontal shaft pressure washer mount ear and grinding to fit the ground seat of a functional horizontal shaft pressure washer mount ear that was broken off during shipping and missing. Thinking welding will be best. Though wondering about adhesives now reading into this. Thinking most of the load will be the rotational force and an adhesive may be all that is required. However, what's the best COTS is another question to deal with the thermal expansion and contraction? Figure summer operation spring, summer and fall operation primarily in Michigan... though the extreme temperature of the cast aluminum engine block transferring heat to the cast aluminum (I guess at least) pressure washer casing is more my concern.

    Dad used Type 1 Silicone (smells like vinegar) once and lasted the lifetime + of the canoe. Just clean where you're going to apply first with a little sand paper to increase the surface area of the bond and try to get into the seams really good assuring smearing for good surface penetration, continuos sealing and bonding.

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  • DIY Professional Grade Welding Table (with FREE Plans)

    You got my vote for sure! Awesome project and thanks for sharing! Been thinking about making a physics version with some mods to make more rigid, dense and cushioned in a similar fashion. Thanks for sharing again!

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  • Convertible Backyard A-frame Fort From a Swing Set.

    Awesome up-cycling of material! Will have to keep an eye out for free playsets that are not treated lumber as most are I've seen listed on Facebook, Craigslist, etc. Thinking and inspired that this concept can be raised as a roof area for more space with some more materials to make a shed also while meeting code size limits. Thinking greenhouse also.

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  • JamesA41 commented on WilkoL's instructable Bat Detector
    Bat Detector

    Looking forward to the heterodyne detector! Thanks for sharing the build. I've wondered what can be done with electronic controlled components to auto tune instead of using a manual controlled tuner. Therefore making a sweep and wider frequency range scanning instrument to demonstrate a more accurate spectrum to view and analyze instead of just one frequency?

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  • Make Your Own Oscilloscope(Mini DSO) With STC MCU Easily

    STM32 will be nice and a cost effective option also. I guess some math functions and even FFT will be useful though is a really small screen. Thanks for sharing and looking forward to your next instructables.

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  • JamesA41 commented on replayreb's instructable Bookcase Door
    Bookcase Door

    Awesome! The room behind the door looks almost exactly the same as my old place that had bookshelves on each side wall with the one side being a hidden door going into the attic. Even that same green color was throughout. Neat, well done! Brings back memories. Thanks for sharing!

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  • JamesA41 commented on faditech's instructable Discone Antenna
    Discone Antenna

    Looks like you answered a question I had already in this questions answer. I'm about to start working on a similar design... though wanting to see how 3/16" wooded dowels work with just aluminum duct tape wrapped since I was pleasantly surprised how well works with the ~450MHz yagi I made and shared on here also. I actually planned to purchase 1/4" dia dowels and didn't realize I bought 3/16" so is good to see the smaller diameter used here as motivation to stay with what I have and move forward still. I also want to make a little more sturdy center mount with a screw (I think brass since cheap) so I can use more than the disc and have a monopole also as well as be able to change the monopole since I want to use a monopole in the center to see performance range. Kind of …

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    Looks like you answered a question I had already in this questions answer. I'm about to start working on a similar design... though wanting to see how 3/16" wooded dowels work with just aluminum duct tape wrapped since I was pleasantly surprised how well works with the ~450MHz yagi I made and shared on here also. I actually planned to purchase 1/4" dia dowels and didn't realize I bought 3/16" so is good to see the smaller diameter used here as motivation to stay with what I have and move forward still. I also want to make a little more sturdy center mount with a screw (I think brass since cheap) so I can use more than the disc and have a monopole also as well as be able to change the monopole since I want to use a monopole in the center to see performance range. Kind of like this design maybe though home made. Thanks for sharing!

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  • Upcycled  Nature Board Walk

    I was wondering if even maybe local farmers can donate field stones and youth groups who have to do community service maybe can pick stones out of fields and bury those as a way to create piles to help longer term support. A lot of nice work you've done that I'm sure can last even longer.

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  • Ultralight Winter Down Bag

    Impressive! I have booties and snow pants I want to make using a re-purposed sleeping bag. Haven't won a bid on a cost effective used lightweight low temp bag yet. This is an inspirational other route to consider. Amazing how expensive these can be. Thanks for sharing!

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  • Upcycled  Nature Board Walk

    I've been eyeing free docks, play sets and landscaping (usually not in as good condition unfortunately) materials on the online free sites (Craigslist, Offerup, Letgo, Facebook Marketplace, etc.) the last few years to remove and re-purpose for not set on the ground (blocks/bricks/steel posts/dock piers) walkways so to keep the wood away from contact with the ground and have an elevated walkway to preserve the natural surface area growth and flows. Awesome to read the detail and see another method being done elsewhere too. Great idea, implement and thanks for sharing!

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  • Embed Tinkercad Designs in Instructables

    Thanks for sharing this! I was wondering how to embed images also... and never used the <iframe> tag syntax or attributes before. Guessing videos can be embedded this way also.

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  • JamesA41 commented on rtkerth's instructable EZGO Sport
    EZGO Sport

    Figured I'd note the foam strip method, that is similar to the cedar strip method, to save on the mess of spray foam (been there before and would have been nice to know prior) and maybe wind up cutting, shaving or sanding less foam. There's a non strip foam method I've seen used before also, though not sure how well performs since seems like wouldn't be as rigid... though does further reduce the sanding requirement.

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    • Spiral Conical Antenna - the Form
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  • JamesA41 commented on imwoody36's instructable Prius Hot Rod
    Prius Hot Rod

    Way awesome to see on instructables! Thanks for sharing all the detail on this easier method for a conversion now on instructables too. Voted also and have a Prius so this is like dreamy. For years, I've been wanting to do a more complicated mod using a modernized EFI ECU 18hp 694cc Briggs and Stratton horizontal shaft for the engine with the rest for the drivetrain for the most part... from a Prius. Just invested in the engine for $50 a few months back and I think I have all the MCU's I need. Time to visit the salvage yard that has the rest of the parts I need, next. Thanks again!

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  • JamesA41 commented on rabbitcreek's instructable Particle Sniffer
    Particle Sniffer

    Didn't realize those particle sensors exist. Inspires me to think of a microbial or other more detailed particle detection air sensor in a smaller form factor combined. I took a look at the HONEYWELL HPM series datasheet to see how the sensor is made. Interesting system. Thanks for sharing all the detail. Fun project.

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  • JamesA41's instructable ~ 450MHz Yagi Antenna's weekly stats:
    • ~ 450MHz Yagi Antenna
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  • Creating Easy Glass Circuit Boards at Home

    Neat, I watched the video a few weeks..., or seems like months, back on Youtube. Interesting method and cool to see and read written down on instructable. I was wondering if there were different conversion methods used that adversely or didn't adversely effect the quality of the PNG's as I found also so did SVG. I wound up using this method that I documented in a poor video since I don't use much. https://www.youtube.com/watch?v=LW_gfwOTEDw Reminds me I can make an instructable regarding maybe too. Thanks for sharing the elegant design in English on here also!

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  • Inverting Amplifier Circuit

    Thanks for sharing! Nice detail.

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  • Amplitude Modulator and Demodulator Trainer Kit

    Assumes the user has the Sine Wave source signal of 14V. The circuit doesn't include the source of the carrier or the audio signals. The circuit is designed to accommodate the signal sources and process for the desired designed (or set) output.

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  • JamesA41 commented on adriancubas's instructable Solar Coffee Maker
    Solar Coffee Maker

    Great thinking! Nice detail and paradigm of thinking regarding re-purposing something to save energy also and being super simple to make. I've wondered about using the HID lamp hoods for use with solar vacuum tubes or just in general metal tubing maybe with a high temp paint or ceramic/clay black-oxide (old D-Cell batteries maybe?) coating or just as-is. Seems like radiant heaters heat exchanger with fins can distribute the heat more and lower the focal point temp to distribute to a larger surface area... that idea might be useful and material found to salvage. In regards to reflectors, the "Adjust-A-Wings" look especially interesting since have two parabolic troughs and I've wanted to try... though haven't got around to since not being off the grid as I was for a time. I'…

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    Great thinking! Nice detail and paradigm of thinking regarding re-purposing something to save energy also and being super simple to make. I've wondered about using the HID lamp hoods for use with solar vacuum tubes or just in general metal tubing maybe with a high temp paint or ceramic/clay black-oxide (old D-Cell batteries maybe?) coating or just as-is. Seems like radiant heaters heat exchanger with fins can distribute the heat more and lower the focal point temp to distribute to a larger surface area... that idea might be useful and material found to salvage. In regards to reflectors, the "Adjust-A-Wings" look especially interesting since have two parabolic troughs and I've wanted to try... though haven't got around to since not being off the grid as I was for a time. I've never seen a parabolic lamp shade commonly, though am wondering if dentist lights maybe have? Looks nice and I wondered for say cooking a stew in a pot for the day about tracking also. That can be done rather easy with a simple tracking circuit or cost effective MCU with a search of instructables for solar tracker and then instead of the servos moving only the solar panel... the servos, or instead re-purposed motors, move the dish.Are you planning to make a solar coffee maker track the sun also?Thanks for sharing! P.S. Neat to see and motivates me to get back to work on my signals tracking project using some dishes I've found online for free off Craigslist, Offerup, Letgo, Facebook Marketplace and other listings with the cheap RTL-SDR's for starters and a Small Board Computer (SBC).

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  • (Inexpensive) NOAA APT Ground Station Utilizing the RTL-SDR and 3D Printing.

    Excellent detail, thanks for sharing! The later advice for re-sampling the signal is greatly appreciated, as I've not read that before and makes sense for signal pre-processing. Amazing how some signals are present, though not even audible until the sampling settings are correct... not only for the carrier signal, for the modulated sound/signal too. Thanks again!

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  • TRADITIONAL  HOUSE USING PACKAGING BOX

    I have an instructable that starts off with some great background references that shows how to make an RF detection system cost effectively to detect some serious issues and concerns I've been advocating awareness of so there is more evidence collection for enforcement to defend against. I'm thinking there are other instructables also to learn about RF devices, though mine might be a good start to see what you can salvage and re-purpose and use to learn more about RF devices. https://www.instructables.com/id/How-to-Make-a-Directed-Energy-Weapon-Detection-Sys/I'm also planning this month to make some more instructables to detail making and using the antennas, some other under $50 RF equipment, some other software applications related to RF equipment and a worksheet for therapy. In reg…

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    I have an instructable that starts off with some great background references that shows how to make an RF detection system cost effectively to detect some serious issues and concerns I've been advocating awareness of so there is more evidence collection for enforcement to defend against. I'm thinking there are other instructables also to learn about RF devices, though mine might be a good start to see what you can salvage and re-purpose and use to learn more about RF devices. https://www.instructables.com/id/How-to-Make-a-Directed-Energy-Weapon-Detection-Sys/I'm also planning this month to make some more instructables to detail making and using the antennas, some other under $50 RF equipment, some other software applications related to RF equipment and a worksheet for therapy. In regards to the cardboard strengthening mixes, I still need to test out some formulas and see what works good. Thanks and hope I've inspired you to learn more!

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  • TRADITIONAL  HOUSE USING PACKAGING BOX

    Interesting you posted your new videos today as I just noticed this in my gmail inbox getting back from investing in some laser cut cardboard hardening material methods products, i.e. Durhams Rock Hard Water Putty and Titebond 2 Premium Wood Glue. I'm planning to mix the two to coat the cardboard antenna form I made at the local Fab Lab. Then depends how performs... I'm thinking I might coat with fiberglass resin (polyester) to waterproof and make harder.

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  • UChip - Serial Over IR!

    Awesome! I was totally hoping this would make it to the market... and just found out it is... or at least in Italy and looks like Europe. Do you ship to the U.S. and outside of Italy? For under $15 seems like an awesome price for the package... I mean... if specs like a Arduino Zero... then how not?I'm thinking this is a great package for the tinySA also since the Arduino Zero is the typical MCU used in the design. https://github.com/erikkaashoek/tinySAThanks for sharing!

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  • Intelligent Bat Detector

    Nice! The open source ID system is an excellent idea.

    Will take a look, just scraped the video and will read into and watch later... then when I have the time watch the youtube video all the way through for their metrics. Interesting idea. Wondering about using the amplifier from an active mini-whip or E-Field antenna amplifier now with the MEMS and transducer dodotronic's noted. Budgeting in for next month.

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  • Goodwill GUI Smart Display

    Awesome! Thanks for sharing and awesome Goodwill Store advocacy too! Way cool and cost effective. I've been wanting to do a Space Weather Aurora version of these from my days back at Tech and now-a-days more an Electromagnetic Spectrum (EMS) Weather type Smart Display for internal (body, vehicle and invasive entry of property), boundary (property) and external (environmental outside and perimeter of property) signals monitoring. Here's all my resources for those interested in (not much yet... still re-learning and learning new): https://drive.google.com/drive/u/0/folders/0B3kLL6AnKjj5YkNrYTVyQW5vVjAInteresting also, are the Smart Mirror versions of these. I've been wanting to make something like your design in a Mirror for in the morning weather reports... thanks for the reminder...…

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    Awesome! Thanks for sharing and awesome Goodwill Store advocacy too! Way cool and cost effective. I've been wanting to do a Space Weather Aurora version of these from my days back at Tech and now-a-days more an Electromagnetic Spectrum (EMS) Weather type Smart Display for internal (body, vehicle and invasive entry of property), boundary (property) and external (environmental outside and perimeter of property) signals monitoring. Here's all my resources for those interested in (not much yet... still re-learning and learning new): https://drive.google.com/drive/u/0/folders/0B3kLL6AnKjj5YkNrYTVyQW5vVjAInteresting also, are the Smart Mirror versions of these. I've been wanting to make something like your design in a Mirror for in the morning weather reports... thanks for the reminder... time to order the material I have in my Wishlist. Have to check the messages since I think the seller noted he has better material for and can custom size also. Amazing what can be made with free TV's you can find on Craigslist, Offerup, Letgo, Facebook Marketplace and other online "Free" sections that people just throw out. The plasma TV's make great computer cases also for use with custom LED/LCD screen replacements... plus you can harvest electronics parts and practice desoldering/soldering if not repair with the boards. Thanks again!

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  • Intelligent Bat Detector

    Excellent dodotronic! I was wondering about the SPU0410LR5H as I saw listed on eBay and not the SPH0611LR5H that Franzis noted using. Looks like the SPU0410LR5H is in stock at Digikey and a little better price than the SPH0611LR5H. The FG-23629-P16 is in stock too, though costing more... I'm thinking easier to work with integrating into existing systems. Obviously, your Ultramic 384K BLE microphone seems the easiest and most cost effective for use in standalone or existing system integration. Thanks for the support, feedback and experienced insight.

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  • Intelligent Bat Detector

    Good call, awesome seeing this instructable... I've been looking into upgrading in more than one way and have on my list to order the Franzis recommended from digikey: https://www.digikey.com/product-detail/en/knowles/...Here is the Franzis article that I not even an hour ago posted on my blogger (see the last comment posted):http://dewdetectionprojects.blogspot.com/2020/01/ultrasonic-projects-and-others.html

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  • Arduino Laser-based Timing System

    Neato, "Today's Staff Pick's" email has two systems (Flicker detector) that can potentially be used as photophones for communication. However, with the laser system, the trajectory needs to be critically considered to prevent injury. https://en.wikipedia.org/wiki/Optical_communicationThanks for sharing!

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  • Portable Light Flickering Detector

    Awesome instructable, very practical and might even be a fun communications device receiver! Thanks for sharing. Wondering if you found what the fastest response time is easily noticeable?

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  • How to Make a Powerful Hydraulic Press

    Well demonstrated and really simply too. Thanks for sharing!

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  • Pots From Sand and Cement, NO MOLDS

    Neat instructable in general. I've never seen this done before. Cool! I imagine a lot of possibilities with shapes, dyes, colorants and molds to pattern stone looking textures also. Wondering even with furnace cement for high fire work. I have some white portland and white sand and am wondering how will turn out with the silicone molds/stamps I made from some tiles. Thanks for the inspiration!In regards to image editing, I use IrfanView with all the plugins to do quick edits real easy. Thanks for sharing!

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  • JamesA41 commented on Natalina's instructable Build a Soundproof Wall
    Build a Soundproof Wall

    I recall there is a method that may be more modern where some sort of filler is sprayed throughout the area rooms that follows the path of least resistance and basically fills all the air leaks in the walls to the point where the pressure in the room trips the system to stop spraying since all the leaks are sealed and the room is pressurized. Then the additional acoustic and RF systems are implemented. Any ideas what that system is called? I forget and that system is impressive in regards to setting up, sensing in each room, operations controls and operation. Granted some form of ventilation baffling I assume needs to be implemented when the designs are that sealed from transmission/penetration. Do you know how the airways are ducted and vented to make sound transmission and even RF m…

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    I recall there is a method that may be more modern where some sort of filler is sprayed throughout the area rooms that follows the path of least resistance and basically fills all the air leaks in the walls to the point where the pressure in the room trips the system to stop spraying since all the leaks are sealed and the room is pressurized. Then the additional acoustic and RF systems are implemented. Any ideas what that system is called? I forget and that system is impressive in regards to setting up, sensing in each room, operations controls and operation. Granted some form of ventilation baffling I assume needs to be implemented when the designs are that sealed from transmission/penetration. Do you know how the airways are ducted and vented to make sound transmission and even RF minimized or almost eliminated? That I've not observed, read or watched regarding. Interesting seeing this article too, since earlier today, I spoke with a gentleman who noted he used to work for a company that made modules that opened on each side so were basically an intermodule shipping container time three width and were invisible (electronically). Someone had to come out from California to test with the range of RF, though the systems were invisible to the others systems, yet he had to be able to detect all those systems stations. He noted they silver lined everything with special seams coverings also, I guess RFI/EMI gaskets too. I'll have to ask him what they did for ventilation, any ideas?

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  • JamesA41 commented on TheDIYPlan's instructable PVC Fence

    Thinking a coat of UV stabilized professional polyurethane paint will help with the longevity of this build unless the PVC pipe is made already with the UV stabilizers for outdoor use. There are also decorative tops/finial that can be made with a 3D printer, molds, plastic/wood and purchased. For some reason Google isn't pulling much up for tops/finials other than these examples:https://www.etsy.com/listing/609171208/skull-fence-finial-for-pvc-pipe-resinhttps://www.etsy.com/listing/623279291/mid-evil-pvc-fence-finialhttps://www.etsy.com/listing/184661624/four-sided-spire-finial-spear

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  • You can add colorants like powder dyes to the face of the mold's individual stones also to have different colored "stone" facades. These can be found at places like https://www.walttools.com/ under color products. I've also made molds using stones, with Dawn Dish Soap as a resist applied first, before using Type 2 Silicone that came out not bad when thinned with mineral spirits if either you make sure to apply only a 1/8" or less first coat or wait longer before removing the cured silicone. Typically, you want to use a catalyst vulcanizing silicone or polyurethane/urea made specifically for making molds or use latex in multiple layers.

    You can also start off with White Portland Cement and make your own cement mix with white sand and crushed lime or gravel. Then add colorants to suit desired end result. This will take some practice unless you consult with someone familiar with the materials being used. I've seen some use perlite and even ground up styrofoam instead of gravel also for a lighter end product material. I'd be sure to seal the later two products (perlite/foam) with something to waterproof or at least water repel. Thanks for sharing! I actually need the motivation on this project as I made and invested in molds over the winter to do similar work like you're doing though a little larger in house brick or larger size.

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  • Way to go! Nice work and very inspirational. I never thought about using a microwave to burn out wax or PLA for use in the lost material method of casting. I used a stock microwave a little during my first undergraduate degree research to observe the different effect in catalyzing the classical reactions I was focusing on. Interesting application. Thanks for sharing!

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  • Wondering if with a SMPS, if this would be a latching switch that you can tap to turn off? Seems like is and also wondering how small these can be made? Thanks for sharing!

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  • If I understand correctly, with a Lock-In Amplifier and the Differential Pre-Amp or Amp, the system can be improved to be even more sensitive when tuned optimally. Basically, upgrading the CIA laser or other frequency microphone/RF listening systems to be even more sensitive.

    FYI... Youtube just suggested this video that goes into more details of the LIGO system, so I figured I'd share here too:https://www.youtube.com/watch?v=jtp71NT0GNg

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  • Did you see you're featured in an article on Hackaday?:https://hackaday.com/2019/06/16/play-dough-simplifies-interferometer-build/Also, I found this instructable that maybe like the suggestions might work as an even better first surface mirror (might be neat to know for other future innovative projects too):https://www.instructables.com/id/DIY-Front-Surface-Mirror./

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  • Nice design. I was wondering what there is on the market and open source also for interfacing the Pi's to the Arduino. I ordered the components to make a Breadshield, https://www.crowdsupply.com/loser/breadshield,so I don't have to wait until July to start playing with and was thinking to make similar for the Atomic Pi. While at it with extra connectors and perf board ordered (I even just ordered some Keyestudios Arduino shield prototype boards) I had a similar vision to make an interface from the Atomic Pi to Arduino and looks like has been done already very clearly. Thanks for sharing!

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  • Awesome, super simple and really cost effective. Keep up the great work!Any plans for improvement, like a free salvaged or cheap webcam you can use to monitor with COTS or custom coded software and maybe further characterize the shape or frequency patterns?The Thought Emporium recently made a video demonstrating constructing a little more advanced version than your system (looks like you were ahead of their release too and maybe you inspired them?), though requires some more tools and expensive materials to construct. https://www.youtube.com/watch?v=ML4FHNGzAn0There are also Grubb-Parsons-NPL Cube, Twyman-Green, Sagnac, Mach-Zender, Fabry-Perot and other Interferometers used in measurement systems. https://en.wikipedia.org/wiki/InterferometryI used a FT-NIR/IR Michelson interferometer w…

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    Awesome, super simple and really cost effective. Keep up the great work!Any plans for improvement, like a free salvaged or cheap webcam you can use to monitor with COTS or custom coded software and maybe further characterize the shape or frequency patterns?The Thought Emporium recently made a video demonstrating constructing a little more advanced version than your system (looks like you were ahead of their release too and maybe you inspired them?), though requires some more tools and expensive materials to construct. https://www.youtube.com/watch?v=ML4FHNGzAn0There are also Grubb-Parsons-NPL Cube, Twyman-Green, Sagnac, Mach-Zender, Fabry-Perot and other Interferometers used in measurement systems. https://en.wikipedia.org/wiki/InterferometryI used a FT-NIR/IR Michelson interferometer when I worked with spectrometer systems and methods for measuring. https://en.wikipedia.org/wiki/Fourier-transform_infrared_spectroscopyReally neat project and system. Looking forward to a video regarding. Thanks for sharing Lets Innovate!

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  • Neat to see a survival requirement implement made from Whirlpool boxes/packaging material. Awesome! Wondering if something like white silicone roof covering or maybe tar painted white would help with waterproofing and be more durable and easier to make for a roof coating. Wouldn't be cheap... though the closed cell spray foam spray lined on the roof and roof rafters interior would be another easy way to waterproof and make more rigid also so will last longer. Maybe strips of vines, bamboo or wood weaved before the cardboard roof is put on will improve strength more in this manner or without foam method. I've seen the "wattle" method done before and clay used to "mud" the walls solid to keep critters out too. https://en.wikipedia.org/wiki/Wattle_(construction)Than…

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    Neat to see a survival requirement implement made from Whirlpool boxes/packaging material. Awesome! Wondering if something like white silicone roof covering or maybe tar painted white would help with waterproofing and be more durable and easier to make for a roof coating. Wouldn't be cheap... though the closed cell spray foam spray lined on the roof and roof rafters interior would be another easy way to waterproof and make more rigid also so will last longer. Maybe strips of vines, bamboo or wood weaved before the cardboard roof is put on will improve strength more in this manner or without foam method. I've seen the "wattle" method done before and clay used to "mud" the walls solid to keep critters out too. https://en.wikipedia.org/wiki/Wattle_(construction)Thanks for sharing!

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  • Cool retro build. I have a Kenwood KR-720 that I'm thinking about either installing in a, or just using the, Klipsch Promedia 2.1 powersupply and amps to make into a THX certified 2.1 system. Good motivation reading this as I've been studying some other systems... though recall I need to make a capacitor order for some nice low impedance Panasonics and low ESR's Nichicons. Thanks for sharing and great save!

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  • Neat build! An instructable on custom forms and a metal brake for the vise and you've covered most needed other than english wheel work and more complex shapes from my basic understanding. Thanks for sharing!

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  • Can you make an instructable how to make your as noted in:PAR124/126 hybrid (with Mann modifications customized for bugsweeping): best."Mann Modification customized for bugsweeping"Thanks in advance for you time and consideration.

    What's your perspective on making a Lock-In Amplifier now days using components like the INA111/TL071, AD603 (might not be low noise enough) and other modern more advanced ultra low noise components (I'm a reborn electronics RF engineering newbie so pardon the lack of reading into yet and lack of confidence as I am a target of surveillance and assaults so worth checking out my one instructable as I'm interested in your perspective https://www.instructables.com/id/How-to-Make-a-Directed-Energy-Weapon-Detection-Sys/). I see GBPPR has this homebrew version and I need to read into it more. http://67.225.133.110/~gbpprorg/mil/cavity/lock/Thanks for sharing!

    Oh, I just looked at the specs on the INA114... low drift. Makes sense for lock in... kind of der moment. Drift or some sort of temperature comp. I'll have to read into the PAR 124 schematics and manual too.

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  • I have a chair from my Great Great... or at least Great Grandfather that I am planning on restoring sometime. For now... I have salvaged free electronics and some other items on I need to work on (3D print or form a new microwave door button). I was thinking about using the space foam and/or mattress foam I picked up for the Prius bed and seat cushions. I haven't read into what to do with the chair until now. Thanks for the reminder, how to detail and inspiration!

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  • Great detail... thanks for sharing. I've been wanting to make one of these since I first saw. I've thought more going the route of the electromagnetic sensitive market use as a shielding also and have wondered about healthy ways to coat lead beads to have an even better shielding. Thinking there are better EMF fabric or materials that can be used too.I thought at one time there were plastic coated (HDPE) steel balls or beads that can be used too. Sand or pea gravel seems like a potential method... though I've thought more the oxide to shield when making... so something like a Titanium Dioxide lining or maybe even healthier would be magnesium oxide. Then... thinking about washing... I'm always back to using steel beads unless the oxide was mixed with the HDPE coating. Have to make a s…

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    Great detail... thanks for sharing. I've been wanting to make one of these since I first saw. I've thought more going the route of the electromagnetic sensitive market use as a shielding also and have wondered about healthy ways to coat lead beads to have an even better shielding. Thinking there are better EMF fabric or materials that can be used too.I thought at one time there were plastic coated (HDPE) steel balls or beads that can be used too. Sand or pea gravel seems like a potential method... though I've thought more the oxide to shield when making... so something like a Titanium Dioxide lining or maybe even healthier would be magnesium oxide. Then... thinking about washing... I'm always back to using steel beads unless the oxide was mixed with the HDPE coating. Have to make a spray coater instructable some day once I complete the extruder. :-)

    Thanks! Yeah, some projects to me almost seem like say in regards to re-purposing some sleeping bags to make more cost effective puffer style pants/lining and socks/boots... I almost think like is like next to sports equipment or space suits. Mainly, the materials are the paradigm of thinking change I find unless specialty machines are required. Though these projects can be done with regular sewing machines and not require the heavier duty leather or industrial machines. Yeah, you've helped out for sure in regards to detailing the stitching. I haven't sewn much in my life and is interesting relearning each project when I do. Thanks again!

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  • Great portability in your design! That's handy. Awesome!

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  • JamesA41 commented on wotboa's instructable Sound Card Tachometer

    Neat... I'm going to plan on making this. I just installed Visual Analyzer which is overwhelmingly (at least at first) impressive and is free. http://www.sillanumsoft.org/ (I've used the spectrum analyzer and data in txt files to compare transmission cables with ADC & DAC combos)http://www.sillanumsoft.org/ZRLC.htm (I haven't tried this yet... looks neat though)

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  • Awesome, I didn't realize Home Deport has acoustic foam. Two layers of drywall come to mind however for residential code... I forget if that code is in general or some places. Thanks for the link!

    Check out this instructable and this Hackaday for more detailed info on more effective builds I'm thinking (not that this one is bad... I have been wondering what the space foam material performance characteristics are and the instructable was well done):https://www.instructables.com/id/Mic-Surround-for-...https://hackaday.com/2018/12/14/build-your-own-ane...I thought this was kind of neat showing a room style with the wall also creative with a different material:https://www.instructables.com/id/Computer-Drawer/

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  • Hi, thank for producing the instructable... I needed the extra inspiration to move forward with my idea. I have experience with tig welding aluminum and magnesium alloys from back in high school since I wound up getting ahead of the class and started doing advanced work and government jobs (as they were called). We were warmed that the magnesium alloys can run away or something like that as I later learned about magnesium ribbons and thermite in college. I think most the alloys I welded were higher concentration of aluminum and the surface area to exothermic effect wasn't so high. Anywho... yeah... the nutrient idea was something I was thinking about since I advocate bio-equivalent health also. I'll have to read into and research to see if there is any data already and keep this thr…

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    Hi, thank for producing the instructable... I needed the extra inspiration to move forward with my idea. I have experience with tig welding aluminum and magnesium alloys from back in high school since I wound up getting ahead of the class and started doing advanced work and government jobs (as they were called). We were warmed that the magnesium alloys can run away or something like that as I later learned about magnesium ribbons and thermite in college. I think most the alloys I welded were higher concentration of aluminum and the surface area to exothermic effect wasn't so high. Anywho... yeah... the nutrient idea was something I was thinking about since I advocate bio-equivalent health also. I'll have to read into and research to see if there is any data already and keep this thread and others posted when I get around to. Oligodynamic effect is interesting also when human nutrients especially or maybe silver since not toxic as much. More of a concern when heavy metals that are poisonous. Thanks again... keep us posted! Neat project.

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  • Neat, you've found natural kitty litter as a clay source also. The bags of the different types of bentonite aren't really that expensive... until like I realized in my situation there wasn't any local sources for sale and the shipping was well over 10 times as expensive. Next source if there is none to dig up from a local deposit... kitty litter.

    Wow... totally awesome timing to email this out! I was thinking two nights ago before I went to bed about casting projects since I was planning on recycling some aluminum for electronics modules cases and while at it making so practical items like door handles. This got me thinking about nutrients since I get distrubed manganese is so high in some supplements and why not more Magnesium (especially if you're not eating enough green vegi's). This turned into me wondering about Magnesium having the oligiodynamic effect as well as how would Magnesium and Copper alloys for handles and other systems from the perspective of human nutrient balance requirements mix and form. Would magnesium stabilize and not burn off in a lower melting point copper zinc melt or would it ignite? What ratios can…

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    Wow... totally awesome timing to email this out! I was thinking two nights ago before I went to bed about casting projects since I was planning on recycling some aluminum for electronics modules cases and while at it making so practical items like door handles. This got me thinking about nutrients since I get distrubed manganese is so high in some supplements and why not more Magnesium (especially if you're not eating enough green vegi's). This turned into me wondering about Magnesium having the oligiodynamic effect as well as how would Magnesium and Copper alloys for handles and other systems from the perspective of human nutrient balance requirements mix and form. Would magnesium stabilize and not burn off in a lower melting point copper zinc melt or would it ignite? What ratios can be obtained? Thanks for the great timing reminder to write this down and look into further.

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  • Great idea that I am going to try to see the effect next time I shave if I can remember (need to work on that calendar remote sensing interface mirror). I usually dry tap or dry brush or blow out to clean... doing that over the trash. The tapping I do in the sink sometimes and wipe the sink with toilet paper before rinsing clean. Reminds me a gas turbine blades that seat themselves after burning in. Have to try to remember to place the same blades in the same positions also.

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  • Seeing this reminded me that I have a similar LM386 amp I started on not completed somewhere I can dig up maybe for an Active Antenna project I'm working on. Thanks for the reminder! Great idea also using a socket so you can test different amps too. I'm not for certain... though wondering if different amps would be impedance/resistance rated for best matching with the headphones.

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  • JamesA41 commented on fretters's instructable Computer Drawer

    Neat build. What would you suggest to line for prevent RFI/EMI? I was thinking lining the inside with 325 mesh stainless steel screen used in silk screening, copper foil or maybe even can use old computer cases that are the heavier duty which are the best shielded. A new aesthetic lining can be placed inside that or the interference lining can be painted too.Probably can use screen over the fans too and might not be a bad idea as a filter to keep cleaner longer term... though this system doesn't look like a workshop system that gets dirty fast.Guessing can even paint with conductive paint and thinking connecting the lining to the chassis ground.The bottom of the desk can be lined the same way and either purchased, or DIY, RFI/EMI gasket material can be placed on the desk bottom I'm thin…

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    Neat build. What would you suggest to line for prevent RFI/EMI? I was thinking lining the inside with 325 mesh stainless steel screen used in silk screening, copper foil or maybe even can use old computer cases that are the heavier duty which are the best shielded. A new aesthetic lining can be placed inside that or the interference lining can be painted too.Probably can use screen over the fans too and might not be a bad idea as a filter to keep cleaner longer term... though this system doesn't look like a workshop system that gets dirty fast.Guessing can even paint with conductive paint and thinking connecting the lining to the chassis ground.The bottom of the desk can be lined the same way and either purchased, or DIY, RFI/EMI gasket material can be placed on the desk bottom I'm thinking to look better.

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  • Thanks for sharing! I didn't realize there were hand crank standing desks. Man... the price point of this design almost warrants a little investigation for those that have time to fabricate their own for a profit or a better investment. This is a quicker, excellent design for those that don't have the time or work space to do metal fabrication work. I looked and these Skarsta are running around $250... the rest of the components add up the cost too ~$350 as noted... unless salvaged or we already have donor parts around. So, I'm thinking (actually what I thought was the design at first) purchasing some cheaper linear actuators for solar systems will bring the price point down considerably and the controls will be in place for remote and equivalent style. The "Switchable DC Motor …

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    Thanks for sharing! I didn't realize there were hand crank standing desks. Man... the price point of this design almost warrants a little investigation for those that have time to fabricate their own for a profit or a better investment. This is a quicker, excellent design for those that don't have the time or work space to do metal fabrication work. I looked and these Skarsta are running around $250... the rest of the components add up the cost too ~$350 as noted... unless salvaged or we already have donor parts around. So, I'm thinking (actually what I thought was the design at first) purchasing some cheaper linear actuators for solar systems will bring the price point down considerably and the controls will be in place for remote and equivalent style. The "Switchable DC Motor Linear Actuator Wireless Remote Forward Reverse" and the "Linear Actuator 20" inch Stroke Heavy Duty 12 Volt DC 200 Pound Max Lift 12V" are what I am looking at investing in for the truck cap. Probably will go with a 30"+ for the four corners of the cap. Then add square tubing for the legs stability and maybe bearing/bushing/lining material if you wanted to for a more rigid build. That material can probably be salvaged for free from treadmills, exercise equipment or even cost effectively from a salvage yard. We have the Boneyard here and other cities have similar from what I've found in my travels. Desks can be found for free online in my experience, i.e. Craigslist, Offerup, Letgo or cost effectively at the Goodwill or University Surplus Stores.Neat inspiration! Great Instructable. Thanks again!

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  • Will do. I was almost thinking about buying a hardness tester also... then I saw how much they are. Will have to find where I can use one. Might do some load testing also just to see failure potential... if does fail... since looks like I have enough material for two at least. The pivot point construct and material on the Air Walker was what first got my attention.

    Interesting latch design. Thanks for sharing the build details... looks awesome. I have the materials I salvaged from some treadmills and an Air Walker (not sure what brand... looks like Proform) that I think I am going to use for the truck (or last few years I've been wanting one as a kitchen cargo shell tail to lower drag on the Prius too). I'm thinking to make a shell to lower drag and keep the height around the top of the bed with extra height since I usually have a cap. The plan is to make a Mike Basich style topper with actuators in each corner and two for the back of cap to lower down to the bed top to reduce drag. For the walk through in the spacer/roll bar area I plan to have three hole ports for a rotor and antennas for communications and radio direction finding. I'm thinki…

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    Interesting latch design. Thanks for sharing the build details... looks awesome. I have the materials I salvaged from some treadmills and an Air Walker (not sure what brand... looks like Proform) that I think I am going to use for the truck (or last few years I've been wanting one as a kitchen cargo shell tail to lower drag on the Prius too). I'm thinking to make a shell to lower drag and keep the height around the top of the bed with extra height since I usually have a cap. The plan is to make a Mike Basich style topper with actuators in each corner and two for the back of cap to lower down to the bed top to reduce drag. For the walk through in the spacer/roll bar area I plan to have three hole ports for a rotor and antennas for communications and radio direction finding. I'm thinking sticking with the aluminum cap material since I picked up another cap for free that I took apart for materials and don't need as heavy a load on top where at most I'm keeping the rack for loading above the solar panel if I need to haul longer materials. The plan is to keep the tailgate swing out, at least the bottom, to be the steel frame to be safe. I picked up a Millermatic 141 for this project (I have new or salvaged body panels to replace also)... how do you like the 200?

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  • JamesA41 commented on TangLB's instructable Making of a DIY Flightcase

    This design inspired me to think about making the under bed drawers for in between the wheel wells in the pickup that slide out when the tailgate is down to be made like this to be more modularized and worth more... if and when removed. Thanks for sharing!

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  • Be really critical to make sure the ribbon cable is seated correctly and the other connection are seated. I've seen with the ThinkCentre's... an A70z in particular an issue with the RFI/EMI shielding tape needing to be removed from a set of wires since was grounding or causing some signal change to cause the backlight to not come on. You can test the backlight with a powersupply and see what the outputs are. I did find this link and am not sure if relevent as I was thinking maybe you need to replace the backlight inverter or backlight CCFL. https://forum.thinkpads.com/viewtopic.php?t=122254Great instructable by the way AdventuresInJunkLand!

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  • Any ideas on low cost scintillation systems? Seems I recall United Nuclear had a cheap crystal eye piece (Spinthariscope)that maybe a webcam can be connected to to perform a more detailed analysis... though I'm sure a more advanced I guess sensitive scintillation tube and photomultiplier or detector can be found or improvised. I've wondered about 4K cameras since more cost effective now coupled with some sort of phosphor to perform the counting with something cost effective.

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  • Neat to see this style of Geodesic dome implemented on instructables. Also, interesting to see the style of covering quick release. Great job!

    What material fabric did you use? Any suggestions on design... like maybe to make the fabric tighter?I was thinking if this stays out in the rain... would you use silicone in between the seems after and/or before you sew?Thanks in advance!

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  • JamesA41 commented on VinitN1's instructable Autoscope

    Wow! Excellent attention to detail. Interesting novel (to me at least) designed system. What an awesome resource for a great tool. Thanks for sharing!

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  • Awesome instructable and device... really system in general. Thanks for sharing. Would be interesting to be able to improve the capabilities to be able to detect specific elements isotopes. Are you aware of anything like this already or planning for in the future to be opensource?An open source database would be excellent as well as a device like the RadScout since I'd think U.S. Public Service funded equipment is required to be open source anyhow. https://www.federallabs.org/successes/awards/award...

    Great detail and system. Thanks for sharing. Any thoughts of creating a open source database and system for detecting elements isotopes like the RadScout that I think is supposed to be open source since Federally funded:https://www.federallabs.org/successes/awards/award...

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  • Great detail as always and thanks for sharing!

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  • Impressive system and cost effective design. I have XLHED and have no sudoriferous glands... only sebaceous glands where I have or had hair. Wondering the effect on the sebaceous glands. This will be interesting to share with those who have hyperhidrosis, i.e. I'll pass on to the NFED. Thanks for sharing!

    How do you know treatment is finished or the treatment protocol? Any references by chance? Thanks in advance.

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  • Thanks for sharing this design. I've never seen the TP4065 module idea before. I wound up purchasing a small range of the multi cell higher current fault protected charge controllers to test out. This is inspiring to consider even using those range of modules. Thanks again!

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  • Wow, speechless. Congratulations and excellent project detail! Thanks for sharing. Answered a question I had regarding bearing surfaces as I am making a smaller scale radio direction finding and radio astronomy telescope from one of the four offset dish/trough (DirectTV & DishHD) I plan to use for a more elaborate synthetic aperture phased array. https://www.facebook.com/photo.php?fbid=2815363061...I need (or at least prefer included) the optical range information also... so the Dobsonian is in the plan also. Thanks again for sharing!

    Any plans on automating for tracking?

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  • Do you have any references to the best nozzle from your experience?

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