This relay module has two channels (those blue cubes).
Download 1 Channel Relay Module Schematic Pics. A list of gpios that supports analog. The picture below shows a 1 channel usb relay module visible in windows device manager.
5V 1-Channel Single Relay Module for Arduino High Level ... from img.dxcdn.com
I started in electronics before the advent of the internet and most solid state components, so getting datasheets and schematics was not easy for me. A relay module to control high voltages with a low voltage by connecting to an mcu. 2x200w relay short circuit protection for amplifier schematic circuit diagram.
5v 2/8 channel relay module with optocoupler for pic avr dsp arm arduino.
Low level trigger expansion board, which is. It can be used to control various appliances and equipment with large current. For other devices (usb gpio and usb relay modules) 1 channel usb powered relay does support analog to digital conversion on some of the gpio terminals. In this example we will connect a simple load such as a led at.
