Interfacing A 5V Relay Module With Your Microcontroller

Most microcontroller outputs can only drive tiny loads. They are good to drive a few LEDs but for anything more, they need a little help. For servos and small motors, we can switch a transistor, which can handle the larger current. When we want to controll something more substantial than a that with our Microcontroller or Arduino, a Relay can be a cost effective solution.

Single Channel Relay Module For Arduino Pic Arm Picaxe

These relay boards can handle 10A of up to 30V DC or 250V AC

They only require 5V VCC

Logic signals are 5V compatible.



Single Channel, 5V Relay Module Schematic
Single Channel, 5V Relay Module Schematic

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