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AirZound for Drop-Bar Road Bike
Soap With Used Cooking Oil
Get Off Your Butt Timer
Circuit Board Design Class
In the code, they still mean A0, A1, and A2 for the lines#define FEEDBACK_PIN_0 0#define FEEDBACK_PIN_1 1#define FEEDBACK_PIN_2 2You can change them to const int FEEDBACK_PIN_0 = A0,...
An alternative to soldering to 18650 terminals is soldering to 18650 holders that come with PCB mounts. I prefer balance charging them in a holder because it's convenient and doesn't damage their labels. This is good for high powered bike lights!
There's three analog inputs instead of six because for two stage converters, two PWM outputs are used for each regulator instead of one. Because there's only six PWM pins on the Arduino, there can be up to three two stage converters.
Microcontroller Based DC-DC...View Instructable »
DIY Buck/Boost Converter (Flyback)
Driving LEDs when their forward voltages are close to the battery's.
Basic Photo Editing
How to Make a GoPro Mouth Mount
ATTiny84 Based 3A Step-Down...View Instructable »
How to Make Liquid Soap From a Bar
12V SLA Powered 15W LED LampView Instructable »
How to Photoshop Someone Out of an Image
Stop Using Ferric Chloride Etchant! (A Better Etching Solution.)
Two Sided PCB Using Toner Method
This code works for the boost converter: one_stage_converter.
Getting Started With Robots
Robot Tools and Materials
Basic Electronics Skills for Robotics
Real Time Patient Monitoring System
Heating Plate for SMD Soldering – Simple, Small and Low Cost
Soda Bottle Top Fidget Toy
You can get 24V from an ATX power supply if you use its 12V and -12V rails.
I anodized an aluminum bar. It's sealed too. For some reason, the anodized surface became a darker grey after sealing. It may need pure water. The anodized surfaces read higher on an IR thermometer.https://youtu.be/k_kXyVyG-MA
Anodizing Metal at Home (The LJS Method)
For safety, goggles should be used too. I would say that it's safer rather than safe. I noticed that for copper sulphate, they emphasized the fact that it's readily absorbed through the skin but not for copper acetate.
Is the Best PCB Etchant in Every Kitchen ?
High Quality (and Safe) Copper Plating
You can use scrap wires for this. The wires can come from e waste.
Would this work?http://ourpastimes.com/refine-silver-melting-6239912.html
That's easier than desoldering for sure. 20,000 tonnes of lead per year comes from the weights. Lead may be phased out in certain places for the weights.
78.125 KHz ATtiny85 Based B...View Instructable »
Melt Used Glue Back to a Hot Glue Stick
Attach Zoom Lens to a Smartphone
Thanks for the link!
Arduino-based connected wake up and ambient light
Turn An Old Cell Phone Into A Smartwatch
Sunrise simulatorView Instructable »
Super Horn (Person-Powered Truck Horn)
How to Sharpen Used and Dull Drill Bits (By Hand!!)
LEDs and Lighting Class
Hello,Thanks for the encouragement.It looks like you're trying to make a high current buck-boost converter.I think you've reversed the drain and source pins of the P-channel MOSFETs for the buck stages. For the boost stages, you may want to drive their MOSFETs with the same driver used for the buck stage or drive them with a gate resistor in series with one of the microcontroller's PWM pins. Make sure that the mcu's total current isn't exceeded.
Measure RPM - Optical Tachometer
It's possible to make the project safer by using a lower voltage such as 12VDC and use low voltage halogen bulbs or LEDs. LEDs may be better because of faster response times. They're also more efficient.We can expect to save 10% assuming that's how long our eyes are closed for during our waking hours. This idea can increase the battery life of devices.
Why not set it so that if acceleration is increased, you need a delay before the brake light turns off? Half a second should prevent flickers.
Bar End Brake Light: BEBL
Wiring a Tactical LED for a...View Instructable »
You'll need a step-up converter which needs to handle an input current of around 4.2A. This converter can only step down.
There's a boost converter Instructable but you'll need to modify its circuit and code to become constant current instead of constant voltage.https://www.instructables.com/id/DIY-Boost-Converte...
I like how the LEDs were spaced. You can turn it into a signal light too.
15 watt LED Helmet Light wi...View Instructable »
What are their forward voltages and currents?If the 100W LED has a Vg of 34V and an If of 3500 mA, and the power supply is 36V with a rating of 4A, it should work on paper. I haven't tried 36V before.It's possible that you need to use a higher rating for Q4 and D3. L1 should handle at least 4A, D3 should handle at least 4A and 40V, C1, C4, and C5 should handle at least 50V, and Q4's Vds should handle at least 40V.
Sorry I didn't upload it before.
I can't find a P-channel MOSFET in SOT23 package that handles over 40V so I modified the circuit board traces so that Q4 would be in TO-220. You can use IRF540N.
Step-down LED Driver (Up to...View Instructable »
How visible is the 5050 strip in daytime?
Fixing Frosted Chalked and Faded Headlights
I'm sorry to hear that you've fried two Arduinos. Did you wire it correctly? I've damaged the Arduino before when I've printed a circuit board for boost converters. I think I've made a mistake of daisy chaining power and ground lines. Do you have a schematic?
infrared digital camera - the real way
Bicycle Directional Lights - Simple, Low Cost, and Solar Powered
Bicycle Picnic Box
Swivel Wall-Mounted LEDs
No Budget Strawberries
Supercapacitor Joule Thief
Transistor Instead of Relay...View Instructable »
Etching PCBs with Pickle Juice
Bicycle BoosterPack: A 3D Printed Portable Electric Assist
Adjustable Ski and Bike Helmet Mount for LED Flashlight
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