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DIY Bench Power Supply (Dual-Channel)
Uni-Directional WIFI Range Extender
AC Lamp Dimmer Using TRIAC and PIC16F877A
Arduino Pedometer Watch, With Temperature, Altitude and Compass!
Controlling 3 servo motors with 3 potentiometers and an Arduino
Modifying the output Voltage of an Adjustable DC-to-DC Converter (Phone Charger Hack)
Using a bench power supply.
Power supplies tutorial
Emergency Cell Phone Charger...
Build a Simple Robot Using a Arduino and L293 (H-Bridge)
Getting started with Arduino - Switched Traffic Light
Measure Capacitance with Arduino
Setting Up the Perfect Electronics Workplace
RGB LED Snowboard with Arduino Uno R3
I2C between Arduinos