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Beonos

wr·beonos

Beonos PCB layout, top view — open source ESP32 board by wr
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About the Beonos PCB

Beonos is an open source ESP32 PCB design by wr, published on GitHub under the CC-BY-NC-4.0 license. It is a 2-layer board measuring 25.2 × 64.4 mm, with 16 components from 11 distinct parts.

Its main chip is the SEEED STUDIO XIAO ESP32C6, from the ESP32 family. Other key parts include the LTV-356T. By type, the board carries 6 resistors, 4 capacitors, 3 ICs and 2 connectors.

It belongs with the iot & wireless, retro computing and keyboards designs in this gallery.

From the project

Control your vintage Bang & Olufsen Beogram turntable from Home Assistant or Sonos.

You can order your own Beonos Controller from PCBway. You can use my referral code to get $5 off your order, if you want. In my experience they're usually pretty fast and high quality, especially for the price.

A small ESP32-C6-powered custom PCB that splices into a Beogram's keyboard cable, reads what the turntable is doing, and sends play/pause/stop commands. The result is a 'smart' vintage turntable that behaves like a digital Sonos source.

Beonos, from the project README
From the project README

Main components on the Beonos

SEEED STUDIO XIAO ESP32C6LTV-356T

Beonos bill of materials (BOM)

16 components, 11 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
SEEED STUDIO XIAO ESP32C6
U1
2
LTV-356T
U2, U3
1
PM254-1-08-W-8.5(C2897390)
J1
1
2.54-1*40P right-angle(C2334)
J2
1
MP1584EN module
PS1
1
10UF
10uF
C1
1
100NF
100nF
C2
2
10NF
10nF
C3, C4
2
470R
R1, R2
2
1M
R5, R7
2
1.5M
R6, R8

Beonos design files

The KiCad project lives in the wr/beonos repository on GitHub; these links point at the commit this page was built from.

Beonos: common questions

What microcontroller does the Beonos use?

The Beonos is built around the SEEED STUDIO XIAO ESP32C6, from the ESP32 family.

How big is the Beonos PCB?

The Beonos measures 25.2 × 64.4 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Beonos?

16 components, from 11 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 Beonos design files?

From the wr/beonos 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 Beonos design in my own project?

It is published under CC-BY-NC-4.0, which limits how it may be reused; read the license before building on it.

Can I test firmware for the Beonos 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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