Breakout Board · OSHWA US002137

ScoutMakes FM Radio Board — Qwiic/STEMMA I2C

An I2C breakout board for the RDA5807 FM radio chip by RDA Microelectronics, supporting Arduino and CircuitPython, with RDS (Radio Data System) capability for station and song information.

The board carries connectors supporting SparkFun's Qwiic and Adafruit's STEMMA QT I2C standards (JST SH 4-pin), so it drops straight into either ecosystem. It ships with a 4-post header for breadboarding and a 770 mm 24 AWG antenna wire.

The board is open source with design files provided, designed and manufactured in the USA, and certified by the Open Source Hardware Association (OSHWA US002137). This is the first FM radio breakout that supports CircuitPython and is STEMMA QT/Qwiic compatible.

• Qwiic/STEMMA QT compatible — JST SH 4-pin connectors
• Runs on the I2C standard, default address 0x11
• Supports Arduino and CircuitPython
• 3–5V DC compatible
• RDS data and a user menu provided via example code
• ENIG RoHS-compliant PCB
• Power LED (trace can be cut to disable for power saving)
• 3.5 mm headphone jack

Example code exposes a full serial user menu: volume up/down, next/previous preset, scan up/down, direct frequency input, station status, mono/stereo mode, bass boost, mute/unmute, RSSI signal data, and soft reset.

Headphones and STEMMA QT/Qwiic cables are not included. A short 770 mm/30.31 in wire makes a good antenna — typically 1/4 the wavelength of the tuned frequency.