Achievements
- Lee Wilkerson commented on Makestreme's instructable Hydrator - a Device That Motivates You to Drink Water
- Lee Wilkerson commented on lonesoulsurfer's instructable Head Phone Amp With Custom PCBView Instructable »
Great job, but the schematic is overcomplicated. Neither resistors, grounds, nor ceramic capacitors are polarized. GND is a more than sufficient marker, too.
- Lee Wilkerson commented on TedySto's instructable Home Sound System
I have this same media head in a stereo system I built for my car. I coupled it with two 2x100W amplifiers, although the amps actually only make 85.5 WRMS/channel from a 12V source. That's still 85.5 times four. It gives me tinitis in a half hour.I also tried two earlier media head versions, but they both bit the dust already.
View Instructable »Nice build!
- Lee Wilkerson commented on vishalj.svp's instructable DIY 2.1 Class AB Hi-Fi Audio Amplifier - Under $5View Instructable »
For every 10 degrees C of transistor collector junction temperature, you lose half of the transistor's life.There is no danger in have too much heatsink, but too little is a waste of money and time!
- Lee Wilkerson commented on sunyecz06's instructable Maple OS Powered Speakers
Better than HiFi.
View Instructable »Your "2x100W Class D Audio Amplifier Board with volume board" link is broken.
- Lee Wilkerson commented on abasel's instructable Pooh Bear & Friends Night LightView Instructable »
Hint: Use some color other than blue which turns off the brain's production of Melatonin - the sleep chemical.
- Lee Wilkerson commented on craftedworkshop's instructable DIY Battery Powered Bluetooth Speaker // How to Build - WoodworkingView Instructable »
Having built serious hundreds of electronics projects over the course of my life and, having a tremendous love for music, most of them are audio related.My stereo system in my living room pushes over 700 WRMS because I added two of those amps I mentioned in my other comment on this page.With a 12V supply, they make 165 WRMS (82.5 WRMS/channel). With 24V, they make 100 per channel.I volunteer my expertise to anyone who needs it. Last year, I assisted a friend remotely to correctly troubleshoot and repair a high powered Harmon Kardon (common hardon) amplifier. I performed electronics repairs professionally, mostly in home audio, since 1971. PM me for contact information.
- Lee Wilkerson commented on MPaulHolmes's instructable Most Efficient Off-Grid Solar Inverter in the WorldView Instructable »
Why not just include a schematic?
- Lee Wilkerson commented on jandb86's instructable Raspberry Pi NFS and Samba File ServerView Instructable »
Since everything is powered from 5 Volts, why not use one power supply?
- Lee Wilkerson commented on Phil B's instructable 555 Capacitor TesterView Instructable »
I built a 555-based capacitor tester in the 80s from a TAB Books or H.W.Sams publication schematic. I also built several more projects from that book including a DTMF generator for telephone dial tones, a telephone warble ringer, several sirens, and a windshield wiper delay for my 62 Fairlane.
- Lee Wilkerson commented on EH_Design's instructable Kissing the Frog V2.0 - Back Horn Bluetooth Speaker Fully PrintableView Instructable »
This design has been used for different size drivers for many decades. It is basically a folded horn.
- Lee Wilkerson commented on NEW PEW's instructable Wireless AC Current Detector
Great and simple project, but I would call it an RFI sniffer. The antenna will pick up all sorts of EM interference and noise.
View Instructable »It won't unless that live wire is radiating EM waves.
- Lee Wilkerson commented on russ_hensel's instructable Free Replacement Tip for Soldering Guns
12 Ga. solid Copper seems to work far better on my Weller 140W.
On these heat blaster guns, they use low voltage high current to heat the tip. Every time you use the gun, you should loosen and retighten both clamp nuts.
View Instructable »Please be careful whatever type of knife you use and I would recommend a dedicated tool for the task. I made an otherwise unnecessary trip to Emergency using my Leatherman knife to strip insulation. The Big Box stores sell a round wire insulation ripper/stripper with multiple functions for $6 or less. Fingers are valuable!
- Lee Wilkerson made the instructable Free Replacement Tip for Soldering GunsView Instructable »
Works great at the beginning. Not sure how long it will last, but definitely inexpensive and great to know. I figured out why they are flattened around the tip area. It makes the metal thinner there, so more heat concentrates.
- Lee Wilkerson commented on opengreenenergy's instructable DIY Professional 18650 Battery Pack
I suggest using a 12V automotive lamp across the batteries when originally voltage matching them. This will provide a minimum load which your digital meter won't offer @1 Megohm per volt.
In case anyone is interested, allow 163.8 Cubic Centimeters for 25 batteries for different battery counts - 11.7 * 11.7 * 7 cm (4.5 * 4.5 * 2 3/4 in).
BMS modules are used because they can balance each individual row of batteries.Your final output voltage will be 3 x 3.7 = 11.1. I suggest a series of 4.
View Instructable »50AH does not address the question. For a car battery, you need at least several HUNDRED Amps. That's why you buy a battery with, say, 550 CCA. If one series of 18650 batteries can deliver 10A, you need 55 parallel groups.
- Lee Wilkerson commented on rdoel282's instructable Smart PlanterView Instructable »
You have combined a couple of my loves in this project. First, the planter for container gardening and then the Arduino as icing for the cake.Great work. One question: did you put some kind of coating on the metal?
- Lee Wilkerson commented on shippityboppity's instructable Reclaimed Planter Box
That is true and I will be lining mine with two layers of 4 mil, but that probably won't work well outside. The box could fill with water.I logged onto instructables specifically to see how others have treated the irrigation issue.So far, I'm planning a layer of pea gravel with a perforated PVC tube, but I still haven't decided on a method for regulating it and removing the excess.
View Instructable »Very nice work. Beautiful finished project.I'm glad you point out safety tips, but you weren't practicing safety when you were wearing the gray shirt. Hair down, necklace hanging out, and bracelets.
- Lee Wilkerson commented on LoganMackey's instructable Build Your Own Essential Oil Extractor Distiller
I would never use Aluminum. It can cause mental deficiencies.
I imagined if you run your cool water in from the bottom, the heated water will rise naturally and take any remaining heat it can absorb from the hottest top parts of the coil last. A fitting made for mounting on round plastic could be attached to the bottom of the bucket (you could make your own) and place another to drain off the hot water at the top.
View Instructable »Personally, I see no reason for not using 1/2". You will need more of it to equal the same amount of heat transfer skin (at least twice and probably closer to 3x as much). Nice thing about 1/2" copper is that it's easier to bend into smaller coils. You could have 3 or 4 coils in the same cooler.
- Lee Wilkerson commented on phrazelle's instructable Steampunk Raspberry Pi LaptopView Instructable »
Would you please show us how you did it? This is Instructables, after all. Steps, pictures, wiring diagrams, list of parts.
- Lee Wilkerson commented on The DocDoc's instructable Raspberry Pi Powered by BatteriesView Instructable »
Love the project. I have purchased one Pi3B+, and I have a 4G 4B purchase planned for imminent future. One suggestion: use something non-reflective such as a towel for your backdrop. The picture with the wires and switch is confusing.
- Lee Wilkerson commented on D10D3's instructable Lunch Box Computer With Raspberry Pi
So, you are D10D3. Are you bi-polar? :D Love the project, man! Thank you for the work you've done here.
If you need more information regarding the incredible Raspberry Pi, look here: https://en.wikipedia.org/wiki/Raspberry_Pi
12 Volts DC is 12 Volts DC. It makes no difference if it comes from a battery, a solar panel, or a power supply.Your choice of 12 V supply is strictly up to you. What works best in your application?
View Instructable »The usual OS for Raspberry Pi is a version of Debian called Raspbian. It is a Linux OS for ARM processors (the CPU). It is absolutely free and has far more free software available than you ever dreamed of with Winduhs or Mac.
- Lee Wilkerson commented on Low tech Lab's instructable Solar Air HeaterView Instructable »
Great 'ible. Novel usage of media. We all know stone is great for heat absorption and even better if it is dark gray or black. Please relate the CUBIC meters of the room. There is a vast difference between the amount of heat required for a 12 foot ceiling as opposed to an 8 or 9 foot ceiling.
- Lee Wilkerson commented on Killmyfeel's instructable Heated Boots
I don't believe you will have any problem with water shorting because you're only using 5V, however it might just tingle your foot soles if you have standing water in the boot or sock. It would be similar to but less than the effect you get from sticking a 9V battery to your tongue.
View Instructable »Great! I have been trying to come up with something like this for decades, but I just never got to it until now.Thank you very much from me and my cold feet.
- Lee Wilkerson commented on speedkar9's instructable Hack an Auxiliary Input to a Car StereoView Instructable »
All good, but it is a mistake to exclude a DPDT switch or its electronic equivalent to isolate different sources from one another. Probably a good thing to load the input circuit with about 1K Ohm/channel, too.I made this same type of modification to several 2000 series Delcos in the 80s. Connected to a pair of home speakers, it was truly amazing the quality I got from them.
- Lee Wilkerson commented on MuneebR3's instructable Controlling Applications Using Brain SignalsView Instructable »
Try retaking the photos. They are out of focus. Some schematics are unreadable.
- Lee Wilkerson commented on UtkarshVerma's instructable Change Bluetooth Headset/Speaker/Adapter's Name or Other Settings Through UART
I think someone has hacked your page. Links are broken.
View Instructable »The first 5 links are broken/hacked.
- Lee Wilkerson made the instructable Architect Style Desk Lamp BaseView Instructable »
A piece of a wooden handrail and a clamp. Now I can see to rewire audio AND I can easily see inside my computers for hardware issues without searching for a flashlight and figuring how to hold it.
- Lee Wilkerson commented on 1o_o7's instructable Architect Style Desk Lamp BaseView Instructable »
Awesome idea for re-purposed bricks!
- Lee Wilkerson commented on 1o_o7's instructable AVR Assembler Tutorial 7View Instructable »
Broken Link: keypress.mp4
- Lee Wilkerson commented on 1o_o7's instructable AVR Assembler Tutorial 4View Instructable »
Link is broken.www.atmel.com/images/doc0856.pdf
- Lee Wilkerson commented on 1o_o7's instructable AVR Assembler Tutorial 2View Instructable »
Man, I cannot believe my good fortune to have found your tutorials.You rock as strong as Gibraltar!Thank you! ! !
- Lee Wilkerson commented on randofo's instructable Bootload an Arduino With a ZIF SocketView Instructable »
Hey, Randy, kudos to you for including instruction on how to safely remove an IC from its socket.I have a 1/8" screwdriver, the last 1/2" of which was heated with a torch and bent at a right angle. It works fantastic for extracting these DIP IC's.
- Lee Wilkerson commented on natrinicle's instructable A/C Mister
You probably need to select Common and Yellow, but you probably already know this by now.
I also considered using condensate water. Only two extra things needed would be redirection and (possibly) a small pump to generate enough pressure to mist.Alternative to the pump could be some absorbent wicking thing similar to the type used in furnace humidifiers.
View Instructable »It's a great idea of which I learned decades ago.These misters will always save a lot of money depending on how much water can be evaporated before air saturation occurs.
- Lee Wilkerson commented on rajasekher.mutukuri's instructable RF CONTROLLED HOME APPLICATIONView Instructable »
You said 'Soldering Gun' and 'lead'. Most people with a soldering GUN will burn up ICs and other semiconductors. I recommend a soldering PENCIL or iron with power rating between 35 and 65 Watts.'Lead' is not a part of this project, however solder is.
- Lee Wilkerson commented on robmawe91's instructable Soldering 101: For the beginner
For desoldering you need two things: heat and vacuum or wick.For nearly all of my desoldering, I use a small hand-held, anti-static vacuum pump and an iron rated at least 40 Watts. For very large connections, you will need more heat/higher wattage. I count the seconds of heat to stay under 6 seconds (one thousand one, one thousand two, etc.). More than 6 seconds, you will probably ruin the board. Heat until the solder flows in the joint. Quickly substitute the vacuum for the heat. You may need to do this more than once on a couple of joints. Best way is to resolder and then desolder. Sometimes I use needle-nose pliers to rotate/wiggle the end of the wire slightly in the hole to completely break it free. With proper unsoldering technique, the component can be very easily removed without de…
see more »DO NOT BUY Radio Shack solder. You will just be wasting your time. The flux is not even inside the spool so some joints and circuit boards will be ruined before the solder wicks into the joint.
View Instructable »Good job; good instructable.Regarding X-Box failures:Solder joints never just break. There always is an external reason.Solder joint failures are caused by:1. Cold-solder joints (caused by too little heat on the joint OR by moving/flexing the joint before the solder has solidified).2. Excessive heat and/or flexing of the joint after the original assembly.#2 is by far the most common. Cheap companies don't use enough heat sink to remove the excessive heat from power transistors and semiconductors because they want the circuits to fail after warranty so you will buy another improperly engineered piece of garbage from them. Every 10 degrees Celsius/Centigrade increase in semiconductor junction temperature results in the loss of 50% of the semiconductor's life. That means a mere 20 degrees of…
see more » - Lee Wilkerson commented on ShakeTheFuture's instructable Start Your Car With a Rope (Dead Battery Life Hack)
- Lee Wilkerson commented on ShadowRoch's instructable How to Solder a Proper Plumbing Connection
MAPP gas is not true MAPP gas any longer. It is an adulterated mixture that will only attain a maximum of about 5% more heat than propane.
View Instructable »Great job, ShadowRoch. Always good to see young people taking interest in such things. This is the same way I learned.I really annoyed a few of the men in my neighborhood when I was young because I was always in their way observing and asking millions of questions. Most of them tolerated me and some even took the time to teach me properly.By the time I was 12 years old, I knew how to sweat-solder copper lines, drive crooked nails, and cut a straight line with a handsaw. To those men, thank you and God bless you.I would add:Torch tips have different heat ratings. You need one which can deliver enough heat to properly melt solder while overcoming copper's awesome ability to sink all of your heat away from the joint. 3/4" pipe takes about three times as much heat per joint as 1/2".…
see more » - Lee Wilkerson commented on RCLifeOn's instructable Light Up Rooms With Solar Power - DIY 10$ ProjectView Instructable »
*sepArate* What's the point of having a spell-checker if you don't use it?
- Lee Wilkerson commented on Moem's instructable Itch-B-GoneView Instructable »
Cool! (Both ways!) Thank you for the recipe.
- Lee Wilkerson commented on MyFixitUpLife's instructable Lawn care trick you need to know: Frig it, sprig itView Instructable »
I have also used this same remedy.Another method I use is to take about 1 inch of sod from the edges of driveways or sidewalks. Presto! Two birds; one stone.
- Lee Wilkerson commented on bestfeeling's instructable Got to mow the lawn TODAY!!!!!View Instructable »
Awesome mod!Yeah, the spark generated by lawn mower magnetos is usually around 10,000 volts or better. It can jump a one inch gap.
- Lee Wilkerson commented on deepspacem32's instructable Greg Conner Jack Daniel's Independence Project Lawn MowerView Instructable »
Video is still broken.
- Lee Wilkerson commented on paul.milligan.102's instructable Retreading Your Lawn Mower TiresView Instructable »
Great idea for larger tires, but 3 inch to 5 inch tires usually don't cost that much. Besides, extra rubber meeting any surface means extra friction as rolling resistance. There is already far too much rolling resistance in small tires.
- Lee Wilkerson commented on SpecificLove's instructable 8 Life Hacks With Steel WoolView Instructable »
Great ideas.One caution: Step 4 - steel wool will remove the surface from linoleum in one swipe. Only rub the very narrow mark because whatever area you rub with steel wool will lose it's shine and will then be very noticeable in the light.
- Lee Wilkerson commented on Gregarious's instructable Enhanced DeWalt Drill Before And AfterView Instructable »
Wonderful job. Love the additions. I noticed the LED does not shine on the tip of the bit, however. From my observations, it looks as if you just need to trim away a tiny bit of housing...Thanks especially for the note about whacking the batteries.
- Lee Wilkerson commented on GreatScottLab's instructable DIY Portable Mini MonitorView Instructable »
DIYers do things for the joy of building and the educational perspective. What price do you attach to your education? Just go directly to Amazon or someplace if you aren't interested in building anything and leave DIY to DIYers.
- Lee Wilkerson commented on deba168's instructable Make 4 Useful Things From 9V Dead BatteryView Instructable »
Great 'able.I would offer one word of caution about connecting batteries in parallel. It usually doesn't work out well.
- Lee Wilkerson commented on QuackMasterDan's instructable Power LED Light-Bar Ambient LightingView Instructable »
Excellent work! Great 'able! Bravo!I would have used some other less confusing technique for connections. For example: co-axial power connector. Male on one end/female on the other.
I like it! I am also one of those why doesn't properly hydrate since I stopped drinking soft drinks.