Wireless RF Communications

Parts List

• Arduino Uno or Adafruit METRO 328
• USB cable (Type A to B for Uno, Type A to Micro-B for METRO)
• Half-size or full-size breadboard
• Assorted jumper wires
• 220Ω resistor
• Piezo buzzer
• 5V 1A USB port wall power supply
• 315 MHz momentary type RF receiver (or a similar receiver in a frequency appropriate to your country)
• Single-button 315 MHz RF remote control (or a remote in a frequency appropriate to your country)
• Controllable power relay module (IoT Power Relay from Digital Loggers, Inc.)
• AC lamp
• Pocket screwdriver

Code

Download Code (2nd Edition, Chapter 15)
(Also available on GitHub)

Useful Links

• Electromagnetic Spectrum entry on Wikipedia
• ISM Band entry on Wikipedia

Videos

Watch a demo video of the “RF Doorbell” project from this chapter:

Watch a demo video of the “RF AC Lamp Control” project from this chapter: