Hardware documentation

Everything here describes Rev B, the version the campaign ships. It is written for the person deciding whether to build on this platform, which means it leads with the connectors, the contracts and the dimensions rather than the pitch.

Early hardware, and some of this is still on paper

The first Rev B run arrived on 28 October 2026 and bring-up has been running since: nine of the eleven tests have passed, so a good deal of what follows has now been measured rather than designed. Not all of it. Treat anything without a date as a design intention, check the badge on the board itself, and read the faults bring-up found — a reversed battery connector and a codec trace too close to its neighbours — beside the motherboard.

Start here

Pinout Every pin on the Daisy's 40-pin header, the general-purpose I/O connectors, and the SPI expansion header.

Satellite chain The wire contract: connector, line rate, how the ring closes itself, frame layout and slot kinds.

Mechanical Board outlines, the 25 mm panel grid, and how boards mount inside an enclosure.

What is not here yet

The firmware side lives in rodeo-sdk. Enclosure drawings and a panel template are still to be written. So is a bring-up guide, which no longer waits on hardware — it waits on someone writing down what the last fortnight taught.

The sources

These pages summarise documents in the repository, which stay authoritative:

Document	What it covers
hardware/rodeo-motherboard/docs/rev-b.md	The motherboard: every decision, with the reasoning and what still needs bench work
hardware/rodeo-motherboard/docs/RODEO_SATELLITE_CHAIN_CONTRACT.md	The satellite chain, in full: framing, discovery, commands, fault codes, timing