13:15

#17 Ultrasonic HC-SR04 for your Arduino (Easy!)

43:46

Control AC Devices with Arduino SAFELY - Relays & Solid State Switches

24:59

#53 Protect your Arduino - use an Opto Isolator! And RGB sound-to-light demo

37:17

Arduino Uno to ATmega328 - Shrinking your Arduino Projects

30:07

#87 Six, yes SIX, GPIO pins on an ATTiny85

23:24

Arduino NANO Propeller LED Analog Clock

57:30

Build an Arduino EEPROM programmer

24:33

Fun with Transistors