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Arduino sample library

Relay Control 20

Switch pumps, lamps, valves, and classroom loads through relay modules.

Open in compiler →

Source code and build tools are available in the protected platform workspace.

How it works

Practice this Arduino feature with a verified Roboda sketch.

  1. Read the constants at the top of the sketch.
  2. Wire the pins exactly as listed in the pin map.
  3. Upload or compile once before changing values.
  4. Change one value at a time and watch Serial Monitor or the output device.

Connections

PinConnect toNote
D10Relay module IN pinUse a relay module/driver, not a bare relay coil from the Arduino pin.

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