NeilRG

I've used this with a linear taper slider pot to very good effect. Nice job on the instructable.

Good design.

This instructable is excellent, whether this design originated with you or not. I am within two years of retiring. During my career, there were not many women engineers in my field. I regret that, as I'm seeing the difference in the quantity and qualities in the design engineering and research contributions that women are making. Long may you run.

My late Grandma used to make huge challas in a roasting pan. A single slice cut in half was enough for a large sandwich. I recall she measured everything by the handful, one of my relatives tried measuring what she was adding to the dough before it went into the bowl, but the results we were less than satisfactory. The instructable well done and brought back memories of an extended family which has since fractured unrecognizabliy.

This is awesome I'm guessing you moved your project to the smaller space after construction . K'nex is more durable than I realized. Do you build the frame and then install the elements of the different paths? How do you plan how the various paths interweave in 3D space? Do you you design the elements and then work out how they need to be interconnected? Good luck going forward.

Stripping the bark makes sense as a way to see if there is hidden damage that could cause a weak spot.

Thank you for your prompt response. Good luck going forward.

This is VERY cleverly done. I have a small collection of 5 printers, and appreciate your processes. I would recommend using teflon tubing sourced from an industrial supplier like McMaster Carr. It is available in larger diameters than the 3mm and 1.75 mm we commonly use. Given the pressures you might generate, it would deform less, offer less resistance and likely be easier to clean. Thanks for posting.

I've seen both of your videos. I dont have a need for this at the moment, but I wanted to commend you for a well presented project, and clever repurposing of the available hardware.

I also need a large container as I run 5kg spools. I just had a thought. I'm going to investigate using a check valve of the type used on sump pumps. The ends are threaded, and the diaphragm is relatively large, so maybe a vacuum cleaner could open the valve. The advantage is that after vacuuming out the air the valve could be capped effectively.

I had this type of tractor 62 years ago. My mom donated this and my other ride on toys. Wonderful project.

The results are beautiful, and the instructable is very well presented. Congratulations on completing this. Years ago when I set up the foundation for my shed, I rented a one man track mounted auger to set the sonotubes. My problem with duplicating your project is that I am not strong enough at this point to set the headers. I will look into having this built or hiring qualified people to help as needed. I'm an engineer, and completely understand the processes required. My town may require drawings to get a building permit. Thanks for posting.

Based on your disclaimer about safety and responsibility, as well as the need for several containers, wouldn't it be wise to sleep off the several beers or wait until the energy drink jitters subside before trying this? :)

I appreciate the detail you present. I do not have an immediate need at the moment, but I will download and file this. I have designed and built scissor linkages with asymmetrical pivots designed for a creepy Jack in the box in which the character came up and forward. It never came to fruition and the actual linkage is MIA . This instructable would be useful for that project.

Well done. Clear and concise, and should be required reading for any electronics novice.

Great scope of work instructable. I built a plastic model of a Cobra decades ago. The only transferrable skill is a little bit of patience.

This is to my experience THE most complex yet well presented project involving 3D printing I have EVER seen. Bravo!!

Your knowledge is impressive, and the presentation very detailed. Fine tuning my printers yields excellent results. The chemical solution presented has toxicity and flammability issues I will refrain from using.

Do you teach in the town of Madison or in Madison Township schools? I grew up in Old Bridge. I'm just curious. That was nearly six decades ago. I became a design engineer, and own a small printer farm. This instructable as well as your passion for teaching are so commendable. I also appreciate your presentation of the tradeoffs and issues which arose and how you solved them.

IKEA has these hooks? They obviously have a sense of whimsy. We have three small dogs, they each have all the accessories you mentioned. The project is very nicely done. I have a small 3D printer "farm". I was going to complement the quality of the printing and enquire if you had scanned YOUR dogs butt to make the hooks :)

This instructable is very well presented. The photographs and colored wire make it exceptionally easy to follow. Charlieplexing can be a bit daunting at the scale you presented.I do not have an immediate use at this time, but I will download the pdf. Thank you.

It looks like Donald Trump.

I did not see the video, so this post may be redundant. I strongly recommend selecting a linear taper potentiometer. That is a pot where say a 5% turn results in a 5% change in resistance. This relationship holds for the entire sweep of the pot, and would make the correlation easier. Logarithmic taper or audio taper pots would hamper the resolution. I have seen home made optical encoders made using pie shaped or finer patterns printed on a clear sheet of plastic, cut into a disc . Then you are counting pulses. That approach suits my application because it allows continuous rotation and resolution.

Your " instructions" for how to discharge a CRT before removing the fly back transformer are very poorly worded, and misleading to a novice. You should be using silicone and not hot glue. Oh wait, this may be the "natural selection " process as you described it, in action.

This is very thorough and well written. What changes are needed to make it compatible with 18650 batteries? Thank you.

The determination to succeed at this is inspiring. Stay the course. Good luck going forward.

I appreciate the language that appears in the instructable. It's sort of a filter that might help keep those who want to be " spoon fed" when pursuing a project that of necessity ihas to be limited and gets to the point as you have. Not to discourage those starting out, but I hope they will be honest with themselves about their current limitations and learn the foundational materials which underlie a multi threaded instructable like this. There is useful info here and links to pursue when time permits. Thank you.

Very well done project and instructable. TIG = Tungsten Inert Gas welding. Not titanium.

As far as I know instructables doesn't have a contest for the type of engaging parents such as you. If they ever do, you must enter. Connecting with your son like this is priceless.Your daughter is likewise fortunate. :)

Making holes through 500 sheets of paper at once, I'm sure you need a very sharp drill to avoid starting a fire from the friction . Using the t nuts as drill bushings is clever. More work but much more accurate than a firearm.

I have a DeWalt that has a direct drive motor. Your instructable is well presented and the link to the source of the tires will prove very helpful I'm sure. I just sold my old Do All large bandsaw that took a 108 inch blade if I'm recalling correctly. Thank you.

I think its clever to use a synchronous motor and upcycle as you did, but actual frequency and voltage achieved would depend on how fast you cranked it. This wouldn't diminish the value of this for things like light bulbs, but might cause problems with switched mode power supplies such as phone chargers. I believe it might be better to branch off to a suitable linear regulator circuit. What are your thoughts/observations?

Is it the case that the apparent large mass of the chassis provides hysteresis which would seem to improve the stability of the robot? I apologize if you recieved other incomplete versions of the same question from me. I "fatfingered " the entry of this question twice. I'm not sure if I hit the post button or deleted my post by accident. Thank you.

The content, presentation, and provided links are excellent. I have learned that Agilent was spun off from HP and is now Keysight Technology. I was not aware of the "plague" you mentioned . The Ebay caveat is not surprising but the ubiquitous quality issue and outright fraud would seem to fall under the "you get what you pay for" thinking. I would also add Allied Electronics to the vendor list. Thank you.

It has more to with the back EMF which generates very short duration voltage spikes in a brush type motor as it self commutates, not only as the motor comes to a stop.

Why risk it? Second guess the instructable here at your own risk. Diodes cost a fraction of an arduino.

Nicely done. I see the need for this. Extruders get out of calibration if they start grinding and get clogged. I run several printers which I've modified to work with 10 lbs spools. I dont print large as much as large quantities of parts, so I use a lot of filament. Thank you.

I'm guessing you and I are contemporaries. I use the old telephone sound on my iPhone as the ringer. I haven't seen a phone like the one you've used in decades. As long as I dont have to pay antique shop prices for a phone like this , I'll keep this in mind. Thank you.

I sensed the designers pride in the project and instructable and thought your post was harsh.

No, your project is imaginative and quite beautiful and I wasn't looking to alter that! I thought paper mache might be incorporated as reinforcement a a thin inside perimeter rim or ribs to possibly help the fragility you mentioned.

Yeah wallboard spackle doesn't come in vanilla afaik. :)

This is interesting. I think you should cut the prongs of the plug so if someone accidentally plugs it into a wall outlet it doesn't destroy this or create a shock hazard. It would seem the prongs could be cut so they dont reach far enough into the outlet to contact power.

I'm looking forward to trying this. I have been working out the concepts to build a Pi based portable pc/breadboard lab in a sleek Pelican hard shell case intended to hold a laptop. You might not have extra money now but it does seem your brain is working VERY well. Keep thinking and experimenting. Thank you for the post. Good luck going forward!

The opening picture of the Little Tykes car might be a petrochemical alternative. I always wanted a car that could be fueled with Froot Loops.

This is NOT a TASER. A taser shoots a barbed projectile connected to the voltage step up circuitry by very flexible wire.

The thinking persons alternative to store bought garden gnomes. I'm guessing no plastic flamingos in your garden either? Excellent instructable.

Some decades ago I was at a fancy Catered Affair . They'd brought out a multi tiered cake and as a kid I went up to try to sneak a finger full of icing. Instead, I damn near cut myself because the fake cake was plaster of Paris.Seeing your instructable I was reminded of that event and realize that had I encountered your fake cake at least I would have gotten some real icing. The next step is a virtual cake with digital "icing". Imaginative work.

Perhaps the paper side of the cardboard could be used as in "papier mache " and applied wet to create reinforcement bands around the inside of the circumference. The vision and execution on this instructable are inspiring and beautiful.

Your reasoning is brilliant and I agree with you. The high inrush current of a large motor requires larger everything else. I would believe that by not having a heavy battery pack high in the frame, that handing would be improved.

Congratulations! I'm not an airpod user / owner but I admire the ingenuity you've shown here.

Before I learned Auto Cad, CAD stood for Cardboard Aided Design. Very good job with the build and instructable.

The underlying processes using ZBrush were eye opening. I am an electro mechanical design engineer with proficiency in Auto Cad inventor and experienced with 3D printing . This instructable was mind blowing and presented a window into another world that I probably lack the skills to enter. FASCINATING!

WHAT !! No microcontroller?? No balloon power?? No printed spring powered mechanisim?? Oh yeah you've done ALL that before. So here we have elegant simplicity and amazing attention to detail. This really reminds me of the tin toys I had as a child. They achieved what seemed like the most amazing capabilities by completely mechanical means.

More interesting even than the very well presented instructable is the goal that has been set for this project, of assisting hearing impaired persons. Bravo!!

You see its a DIGITAL clock. It uses geared servomotors which are definitely MECHANICAL. Did you actually expect such a clock to be driven by an escapement mechanism spring and gears. Do you get off on being a troll. Could you personally build the MECHANICAL clock you thought this was. It may not be something you like but to call someone else's work RUBBISH in just NASTY!

We recieved one of these years ago as a gift. The ticking of the windup mechanism want bad but the mechanical striking of the alarm bells could be startling to say the least. I might be interesting to incorporate a solenoid driven mechanism under uproc control to use the bells. You could have it make a varying number of strikes for different situations.

So you wind up with two helmets for cosplay and a model of the planet Mars..........sort of ;<)

Stop whining.

Beautiful project. I will use flat corner braces on the inside of my panels.

I always appreciate when a maker details the decision making process and trade offs made to see a design through to completion. I'm not sure who said this but " Failure can teach us more than success". This is a well done post.

In addition to the decoupling capacitors, this needs to be on a HEATSINK or the regulator will overheat and fail if you try to draw any appreciable power. This instructable is half baked misleading and inaccurate.

It is fortunate that you chose the wires for pins 7 and 8 the brown pair because these are not used in most network scenarios com. They are used for power over ethernet POE applications. This way, you reduce the risk of damage.

Your presentation of the tradeoffs you considered was well done, as was the evolutionary part of the project. One very important point however if you're welding anything galvanized is to do it with plenty of fresh air because the fumes are toxic. Welding with MIG can be made more difficult outdoors if its windy though because the shielding gas gets blown away.

This is well written especially the cautionary part about the risks to persons and for a fire extinguisher. I also appreciated the the brief mirror and lens part you presented.Judging by some of the posts in the 3D printing universe, a small percentage of new uses seem to expect that they've bought a 3D "appliance" like a toaster, put in bread turn a dial push a button and out comes toast. Some of these noobs just return the printer in disgust.In the laser cutter world, I wonder if there isn't a similar group, attracted by the numerous laser cutter projects here and on other sites. Very few instructables can be end to end comprehensive for some people, instructables like yours also serve as a platform from which more research can begin.

This is a fine instructable. Thanks for posting. BTW it's spelled "definition" not difinition.

No need to suck on the tube at all. Take a garden hose, slowly feed one end into the hot tub. Air will get pushed out of the other end. Stick your thumb over the free end. Then lead the garden hose away from the hot tub. The path on the ground should be downhill for best results, it can be level as long as the hot tub is higher than the surrounding land. The reason for the longer hose, is that it increases the downhill side and makes the suction stronger.I use this method to clean my aquarium. There's NO WAY I would want ANY of that water entering my mouth.

The design is cool. It can be scaled beyond what most people can print with pvc pipe. It won't be as sleek obviously as your original design. One can never know where inspiration will come from. Fine instructable. Keep going!

Rodney Brooks has developed and written about subsumption architecture for robotics. It uses NO microprocessors, but just a few transistors and light dependent resistors and small dc motors. The transistors and LDRs can be configured to make the robot either light seeking or light avoiding, kind of like an insect.Check it out. There are several pages online.

This tutorial is very helpful. I was aware of audio books but not aware of the "landscape" as far as how to do this from home. Oddly enough I already own a few thousand dollars worth of gear from my former hobby, digital mixer high quality mics etc. when I used to do live sound and recording. You have opened my eyes to something very interesting.

Useful info. Thanks.

May you never get old.

Your creativity is obvious, the masks are suitably creepy. The instructable needs to include info on working with fiberglass safely. Grinding and sanding can make for skin and eye irritation, inhaling the dust can be really bad. I'm sure I'm not mentioning anything YOU dont know, but common sense seems to be in short supply these days.

I applaud your well presented instructable. Ive been an electro-mechanical design engineer for 4 decades. I'm not faulting other people who post uproc projects, but sometimes they either dont present or fully grasp the points you have made here. As a result, many newbies ask the types of questions that if they took the time to read this post would either answer the question directly or lead to additional reading.

By the way, if possible, try to obtain a cutting mat to work on, it might help perfecting your skills. They are not too expensive, sold at craft stores and WalMart. Try to obtain an X acto knife to cut with. Both suggestions of course, are subject to the approval of your " purchasing department"

Yeah, but there are companies that charge to actually DEMOLISH hard drives for corporate security measures ;<).

Like me, you are open to being inspired by things around you. I believe that to be very important. Good luck going forward.

Beautiful workmanship. Finish the instrument and enter it in a contest.

A stair climber needs a long enough length to bridge the diagonal distance between two and preferably three stair treads to avoid flipping over backward , given that the center of gravity will shift due to the weight of batteries etc. Why not substitute rubber hose for the PVC?

You need two of these unless you want two smaller motors to run at exactly the same time speed and direction. This is such a noob question I suspect this is beyond your capabilities at the present time. Not to discourage you, but this is an ambitious project so I suggest you start with a simpler kit that uses SMD devices so you can acquire the necessary skills. It doesn't matter what the kit does, just get some practice first. Good luck.

The low on resistance in the miliohm range makes fets amazing. The instructable is very useful and well done. I appreciate the points about what you'd do differently. I will put this on my project list. I have a small metal lathe, a Logan, that I want to set up with fine speed control for use almost exclusively as a coil winder. I also have a beefy ac motor, but equipping that with electronic speed controller is cost prohibitive for the anticipated occasional use.

I hope your personal circumstances have improved since you posted this. Money is one form of wealth but that is not the most important measure of a man's worth. You poured your heart into this and overcame very many difficulties. You learned many things and through your efforts acquired new skills. Knowledge is power. By that measure you are not a poor man,but a man who has earned self respect and the respect of others including me.

Very detailed account and a really fine result. I appreciated your point about the possibility of the finish you chose affecting a person with allergies.

HDMI capability is essential for me to get the best quality out of a raspberry pi. The high cost you mentioned is much less than the cost of a larger screen for the portable breadboard capable raspberry pi laptop/breadboard lab I've been planning. Thank you for your post.