Relays are suitable for driving high power electronic devices such as lights, electric fans and air condition.
26+ Arduino 8 Relay Module Schematic Pics. Each relay has a normally open (no) and a normally closed (nc) the following schematic shows how to connect the module to an arduino, i have only shown one device (lightbulb) connected to one relay. Assemble all the parts as shown in the schematic diagram.
Pin on Arduino from i.pinimg.com
Assemble all the parts as shown in the schematic diagram. The arduino can be programmed to turn on the relay when a certain event occurs, for example when the relay receives a high signal at the signal pin, the electromagnet becomes charged and moves the contacts of the switch open or closed. How to use relay to control high power load?
Do not touch any wires that are connected to mains voltage.
For better understanding let's see the circuit schematics of the relay module in this configuration. How does the circuit works. Another version of the schematic is to add an optocoupler, effectively isolating the microcontroller from the high current that may come from the relay circuit here, the in pin of the module is attached to d3 of the arduino uno. This relay module has two channels (those blue cubes).
