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Fm receiver

NishthaSharma-22·fm-receiver·src/pcb/fm_receiver.kicad_pcb

Fm receiver PCB layout, top view — open source RP2040/RP2350 board by NishthaSharma-22

About the Fm receiver PCB

Fm receiver is an open source RP2040/RP2350 PCB design by NishthaSharma-22, published on GitHub. It is a 2-layer board measuring 82.5 × 36 mm, with 16 components from 12 distinct parts.

Its main chip is the XIAO-RP2040-DIP, from the RP2040/RP2350 family. Other key parts include the RDA5807MRRD-102V2.0 and TDA2822NBD. By type, the board carries 5 capacitors, 4 resistors, 3 ICs, 3 connectors and 1 switch.

It belongs with the audio designs in this gallery.

From the project

a small FM receiver built around the RDA5807, running on a Xiao RP2040, with a TDA2822 amp driving external 1W speakers. volume is analog (pots on the amp inputs), tuning/seek is handled in firmware via a button.

a small FM receiver built around the RDA5807, running on a Xiao RP2040, with a TDA2822 amp driving external 1W speakers. volume is analog (pots on the amp inputs), tuning/seek is handled in firmware via a button.

CircuitPython, lives in src/firmware/. uses a modified rda5807.py driver - button press seeks up, hold seeks down, volume is hardware (pots), not firmware.

Fm receiver, from the project README
From the project README

Main components on the Fm receiver

RDA5807MRRD-102V2.0XIAO-RP2040-DIPTDA2822NBD

Fm receiver bill of materials (BOM)

16 components, 12 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
RDA5807MRRD-102V2.0
U1
1
XIAO-RP2040-DIP
U2
1
TDA2822NBD
GMIC(绿微)
U3
1
PJ-3200
XKB Connection(中国星坤)
CN1
1
R_SPK
J1
1
L_SPK
J2
1
SW_Push
SW1
3
100UF
100uF
C1, C2, C3
2
470UF
470uF
C4, C5
2
10K
R1, R2
1
10K
R3
1
Potentiometer
R4

Fm receiver design files

The KiCad project lives in the NishthaSharma-22/fm-receiver repository on GitHub; these links point at the commit this page was built from.

Fm receiver: common questions

What microcontroller does the Fm receiver use?

The Fm receiver is built around the XIAO-RP2040-DIP, from the RP2040/RP2350 family.

How big is the Fm receiver PCB?

The Fm receiver measures 82.5 × 36 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fm receiver?

16 components, from 12 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Fm receiver design files?

From the NishthaSharma-22/fm-receiver repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Fm receiver design in my own project?

The repository has no license, so all rights stay with NishthaSharma-22. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Fm receiver without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug RP2040/RP2350 firmware against it before you order a PCB.

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