First, upload the following PWM sketch to your Arduino Uno r3/Nano v3 and connect a 10mm water-clear green LED to D9. const int ledPin = 9; // Test LED wire to D9 void setup() { // Set the pin as a ...

He’s using an Arduino Mega to drive the 7x7x7 ... was made 0.9 mm galvanised steel wire, straightened by stretching the wire. The 5mm Blue LED’s are positioned 30mm apart, with the anodes ...

To the human eye, it looks like multiple LED’s are lit up simultaneously. [Alex] planned to use an Arduino to control this display, but it doesn’t have enough outputs on its own to control all ...