3 leds and a TSOP4838 IR receiver module. You must check the datasheet before use the IR module to see which pins connect to the power supply and which one delivers the output voltage. I used an ...

For instance, you could move the IR LED to a pin on a ‘595 shift register, and still have the same abstraction. You couldn’t do that with the I/O pin library, or whatever Arduino uses. Reply ...

[Computergeek] made an Arduino Shield in order to use it as an ... he should probably have invited a resistor to the party the two IR LEDs are having.

To replicate Krejci’s design, you need an Arduino UNO Rev3 board, an AMG8833 infrared sensor module, and an 8×8 RGB LED matrix ... an adjustable interrupt pin. This can be set to activate ...

Except, on the Micro, there is no actual serial bus involved in programming the Arduino, as everything is done over USB. So the TX and RX leds are driven by a couple of pins on the ATmega32U4 (see a ...