Drawing a robot mouth shape on the LED matrix wokwi website was used to simulation the connection To create the electrical circuit, we used an Arduino and a Max7219 LED matrix 32 x 8, but it is ...

connected LED and button to the service over WiFi. The LED and button can be controlled and monitored from a dashboard. - An LED is connected to BCM pin 21, physical pin 40. - A (normally open) ...