In order to use the ESP-01 Wi-Fi relay module, a programmer/programming adapter is required to program the ESP-01 module (see below). Also it is pretty easy to make your own programmer, or you can ...

to VCC of 8×8 LED Matrix Connect external 5VDC supply’s GND, to the GND of 8×8 LED Matrix Module Note that the 8x8LED Matrix Module should be common-grounded with Arduino, ie, always remember to ...

The Raspberry Pi is a credit card-sized computer capable of running full-fledged Linux distributions such as Raspberry Pi OS, ...