Arduino Relay Driver Shield Circuit Diagram: In this 3-Channel Relay Driver Circuit, we have used an optocoupler to trigger the NPN transistor which further drives the relay. And optocoupler will be ...

So today we will be designing a Multipurpose Power Supply. The Power Supply will be an Arduino UNO Power Supply Shield which will output multiple voltage range such as 3.3V, 5V and 12V. The Shield ...

Features: Hardware components: Arduino, relay module, jumper wires, and external power source Code: Arduino code for controlling the relay based on sensor input or a manual switch Applications: Home ...

The power for the relay card and the Arduino Pro MINI is derived by a POE 802.3af ethernet switch. ... Have a look at the POE circuit (taken from datasheet) The Hanrun Pinout on the Ethernet module ...

This is a where a Power Mosfet comes in. With the help of the Power Mosfet, we can use the low voltage output from the Arduino ports to control high voltage/current loads -the popular “12V LED strips” ...

If you ever use a microcontroller or mini computer like the Arduino or Raspberry Pi to control an AC appliance or other higher power device, you will likely use a relay. With minimal circuitry, you ...