With the portable Li-Ion battery powered FM radio receiver you can listen to your favourite radio station. This device is equipped with cost-effective components, including a CH32V003J4M6 32-bit RISC-V microcontroller, a RDA5807MP FM radio tuner IC, an audio amplifier (TC8871 or XPT8871), a 128×32 pixel OLED display (SSD1306), and a Li-Ion battery charger (TP4054 or MCP73831). You can directly connect a protected 3.7V LiPo battery, a 3W / 4Ω speaker, and an FM antenna. The FM Radio Receiver is a port from the ATtiny412 version.
Dave5 
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