Breakout board · rev 1.0
S.M.B.B.-H
The S.M.B.B. with everyday parts you can solder and replace yourself.
What it does
The S.M.B.B.-H, the Hybrid, is the S.M.B.B. built with ordinary parts. The board maker fits only the surface-mount chips and the small parts beside them; everything else is through-hole, the same parts as the Standard board, soldered by you and easy to replace later.
It's set up, mounted and wired exactly like the S.M.B.B., with the same plugs and the same built-in head temperatures, angle sensor, clock and amplifier.
- Chips fitted by the board maker; the rest through-hole, from the Board Assembly Guide
- Everything the S.M.B.B. has on board: no daughter boards needed
- The same plugs in the same places as the Standard board and the S.M.B.B.
- Mounts upright in the dash panel, its parts facing the driver
What it connects to
| Plug | Connects to |
|---|---|
| Shared plugs | POWER IN, TO 5V BUCK, TO PI, SWITCHES, FUEL, COIL, TACH, LIGHTS, HORN, BUTTON POD and TEMP PROBE, wired exactly as on the Standard board |
| CYL 1 to CYL 4 | Each cylinder's Type K thermocouple, straight into the board |
| PARK BRAKE + SPARE | The parking brake switch, plus three spare inputs for future senders |
| SPEAKER | The cab speaker (4 Ω), driven by the amplifier on the board |
| RTC BATTERY | The clock's CR2032 cell, in a covered holder on leads |
| TILT | The optional GPS board (the angle sensor itself is on the board) |
| SPARE | A free Raspberry Pi input, for something you add later |
Daughter boards
Runs on a Raspberry Pi 4 or Raspberry Pi 5. These small boards add to it:
- Optional
GPSGround speed, altitude and job sites
- Not needed
CHT + Parking BrakeHead temperatures and the brake are built in
- Not needed
TILTThe angle sensor is built in
- Not needed
Pi 4 TILT + CLOCKThe angle sensor and clock are built in
The other boards
M.O.S.S. is in development and bench testing; details may change before release.