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Rp2040-cw beacon

ra0sms·rp2040-cw-beacon·KiCad/beacon_rp2040/beacon_rp2040.kicad_pcb

Rp2040-cw beacon PCB layout, top view — open source RP2040/RP2350 board by ra0sms

About the Rp2040-cw beacon PCB

Rp2040-cw beacon is an open source RP2040/RP2350 PCB design by ra0sms, published on GitHub. It is a 2-layer board measuring 75 × 32 mm, with 33 components from 18 distinct parts.

Its main chip is the RP2040-Zero, from the RP2040/RP2350 family. Other key parts include the LM7805_TO220. By type, the board carries 11 capacitors, 10 resistors, 4 connectors, 4 diodes, 2 ICs and 2 transistors.

It belongs with the audio designs in this gallery.

From the project

rp2040 cw beacon with audio and key outputs

A Morse-code beacon controller built around the Waveshare RP2040-Zero module (Raspberry Pi RP2040), designed for keying an HF/VHF FM/SSB/CW transmitter.

- Firmware — generates a sine audio tone, controls the transmitter PTT and CW key, transmits a configurable message stored in flash and repeats it with a configurable pause. All parameters are configurable at runtime over a USB serial console and persist across power cycles. - Controller board (KiCad) — power supply 8–15 V, audio output with attenuator and low-pass filter, open-collector PTT and CW key outputs, supply voltage divider and…

Rp2040-cw beacon, from the project README
From the project README

Main components on the Rp2040-cw beacon

RP2040-ZeroLM7805_TO220

Rp2040-cw beacon bill of materials (BOM)

33 components, 18 distinct parts.

QtyPartRefs
1
RP2040-Zero
RP2040-ZERO
Waveshare(微雪电子)
U1
1
LM7805_TO220
U2
2
BC817
Q3, Q4
1
CONNECTIONS
J1
1
GPIOs
J2
1
GND
J3
1
5V
J4
2
MBR0540
D1, D4
1
LED_CW
D2
1
LED_PTT
D3
5
100n
C2, C3, C5, C10, C11
3
10u
C4, C9, C12
1
47n
C6
2
47uF
C13, C14
1
34k
R1
5
1k
R2, R4, R6, R9, R10
3
10k
R3, R5, R8
1
100k
R7

Rp2040-cw beacon design files

The KiCad project lives in the ra0sms/rp2040-cw-beacon repository on GitHub; these links point at the commit this page was built from.

Rp2040-cw beacon: common questions

What microcontroller does the Rp2040-cw beacon use?

The Rp2040-cw beacon is built around the RP2040-Zero, from the RP2040/RP2350 family.

How big is the Rp2040-cw beacon PCB?

The Rp2040-cw beacon measures 75 × 32 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Rp2040-cw beacon?

33 components, from 18 distinct parts. The full bill of materials is listed on this page.

Where can I download the Rp2040-cw beacon design files?

From the ra0sms/rp2040-cw-beacon repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Rp2040-cw beacon design in my own project?

The repository has no license, so all rights stay with ra0sms. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Rp2040-cw beacon 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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