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boards /rodeo-button-bank-4

Render of the Rev-B rodeo-button-bank-4 at an angle: a narrow black strip with four square tact switches in a row and the RODEO wordmark repeated three times running off one end.
Rev-B— three-quarter view · CAD render

Satellite

rodeo-button-bank-4

Designed

The third satellite, and the first that can answer back. Lit tact switches this small are either eight dollars each or barely documented, so the buttons are plain and an RGB LED sits beside each one, meant to show through a light pipe in the panel. The LEDs run from the chain’s own 3.3 V with a firmware brightness cap, or at full brightness from an auxiliary 5 V feed, switched over automatically by a MOSFET and a Schottky so there is nothing to set.

controls
4 × tact switch, 12.5 mm centres
indicators
4 × WS2812B addressable RGB
outline
20 × 75 mm
brain
CH32V003F4P6
chain slots
board kind 7, four button slots
LED supply
chain 3V3, or aux 5 V when it is plugged in
Designed

Drawn and routed, with fab outputs generated — and not ordered. The first Rev B run went to JLC on 2026-10-18 and covered thirteen boards; this is not one of them.

Planned

Full brightness needs a 5 V feed, and the Rev B motherboard does not bring one to a connector — the only 5 V it exposes is the codec’s analog supply, which LED current has no business on. An aux output is on the list for the motherboard’s next revision.

In progress

The satellite firmware for kind 7 is written — the RGB output slot, the four switches, and the WS2812 driver with its brightness cap on chain power — and tested on a computer, but it has not run on a board.

More views

Top and bottom, from the KiCad files

  • Render of the top of the Rev-B rodeo-button-bank-4: four tact switches numbered 1 to 4 down a 20 by 75 mm black strip, a tiny RGB LED beside each one, and three overlapping RODEO wordmarks at the top.
    Rev-B— top · CAD render
  • Render of the underside of the Rev-B rodeo-button-bank-4: the CH32V003 microcontroller at the top, the chain input and output connectors labelled CHAIN IN and CHAIN OUT, and two white two-pin connectors labelled AUX 5V at the bottom.
    Rev-B— bottom · CAD render

Files

Published with the board

Nothing here sits behind a sign-up. Fork a satellite, respin it, and the host still reads it.

  • .kicad_pro KiCad project Schematic, layout, footprints. link pending the public repo
  • .zip Gerbers Fab-ready, plus drill maps. link pending the public repo
  • .csv BOM + CPL Parts and placements. link pending the public repo
  • src Firmware Where the board has its own. link pending the public repo

The rest of the family

Want in?

Rodeo goes to Kickstarter in January 2027. The waitlist hears first, and day-one backers are planned to get an early-bird price. One email to confirm, then nothing until there is news.

You will get one email asking you to confirm. Nothing else until there is something to say, and unsubscribe from any of it.