HardLabs

Fm streamer

russery·fm-streamer·hardware/fm-streamer.kicad_pcb

Fm streamer PCB layout, top view — open source ESP32 board by russery

About the Fm streamer PCB

Fm streamer is an open source ESP32 PCB design by russery, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 39.4 × 57.2 mm, with 58 components from 14 distinct parts.

Its main chip is the B08D5ZD528, from the ESP32 family. Other key parts include the PCM1772PWR and SI4721-B20-GM. By type, the board carries 30 resistors, 23 capacitors, 3 ICs, 1 connector and 1 inductor.

It belongs with the audio and rf & radio designs in this gallery.

From the project

Uses an ESP32 to stream internet audio to an FM radio transmitter

I2S format: 16-bit Normal clock (rising edge)

TODO: - fix hardware errata - update top level readme with board images and latest hardware config

Main components on the Fm streamer

B08D5ZD528PCM1772PWRSI4721-B20-GM

Fm streamer bill of materials (BOM)

58 components, 14 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
B08D5ZD528
ESP32_DevKit_V1_DOIT
U1
1
PCM1772PWR
U2
1
SI4721-B20-GM
SI4721
U3
1
0480371000
USB_A
J1
1
LQW18ANR12G00D
120n
L1
4
GCM155R71C104KA55J
0.1u
C1, C13, C15, C18
10
GRT188C81A106ME13D
10u
C2, C3, C12, C14, C16, C19, C20, C21 +2
9
GCM155R71E223KA55J
22n
C4, C5, C6, C7, C8, C9, C10, C11 +1
6
RMCF0402ZT0R00
0
R1, R2, R14, R28, R29, R30
2
ERJ-2RKF4701X
4.7k
R3, R12
13
ERJ-2RKF1000X
100
R4, R5, R6, R7, R8, R9, R10, R11 +5
1
ERJ-2BQJ1R0X
1
R13
6
ERJ-2RKF1002X
10k
R15, R16, R18, R19, R20, R21
2
ERJ-2RKF2203X
220k
R24, R25

Fm streamer design files

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

Fm streamer: common questions

What microcontroller does the Fm streamer use?

The Fm streamer is built around the B08D5ZD528, from the ESP32 family.

How big is the Fm streamer PCB?

The Fm streamer measures 39.4 × 57.2 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Fm streamer?

58 components, from 14 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 streamer design files?

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

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

Yes, under the terms of its GPL-3.0 license, which russery chose for the repository.

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

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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