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Based on RDA5807FP radio

Overview

This project is an FM radio based on the RDA5807FP chip. It has a simple structure and is a pure hardware circuit. It has been board tested and has good results. The chip has its own audio amplification and can adjust the headphone volume.
1. Chip RDA5807FP, buy online for about 2 yuan a piece with free shipping;
2. Crystal oscillator 32.768MHz, buy online for about 3.3 yuan for 10 pieces with free shipping;
3. Color ring inductor 1uH, 50 pieces for 3.3 yuan with free shipping;
4. Capacitors, switch buttons and 3.5mm The headphone jack is relatively cheap, about a few cents;
5. CR2032 button battery holder is 6 cents each.
The overall production cost is less than 4 yuan on average. The reason for choosing button batteries is that the chip itself has relatively low power consumption and is easy to carry. You only need one earphone to listen to the radio anytime, anywhere.
You can also directly connect the headphone cable to the speaker for playback, but the connecting cable needs to be longer to achieve good sound reception.

Design Files

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It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

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Update:2025-06-20 09:15:36

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