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ELECTRONICS

433MHz RF Relay + L298N Motor Control

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UPDATED 2026-09-21
TYPEBreadboard
USE-CASERf Relay Motor Control
EXAMPLE433MHz RF Relay + L298N Motor Control
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CASE ANALYSIS

Scenario

An Arduino Uno receives a 433MHz RF signal, activates a relay to supply 12V to an L298N motor driver, then controls motor direction and speed via digital and PWM pins.

Key decisions

  • Use relay COM/NO to switch 12V supply to L298N 12V pin, isolating motor power when idle
  • Drive L298N IN1/IN2 with Arduino D8/D9 for forward/reverse and ENA with D10 for PWM speed
  • Share common ground between Arduino, relay, and L298N via top negative rail

When to reuse this

Use this wiring when building a remote-controlled DC motor driver with safe power switching and reversible speed control on a half-size breadboard.

← See more rf relay motor control examples
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