HardLabs

TRax Control Board

vmoa·trax-pi·KiCad/TRax-Schematic/TRax-Controller.kicad_pcb

TRax Control Board layout, top view — open source Raspberry Pi board by vmoa

About the TRax Control Board

TRax Control Board is an open source Raspberry Pi PCB design by vmoa, published on GitHub. It is a 2-layer board measuring 99.1 × 149.9 mm, with 37 components from 12 distinct parts.

Its main chip is the Raspberry Pi Header, from the Raspberry Pi family. Other key parts include the 4N25. By type, the board carries 16 resistors, 7 ICs, 7 capacitors, 5 connectors and 2 diodes.

From the project

T-Rax Roof Controller, the Raspberry Pi edition

KiCad (pronounced KEY-cad) is a Cross Platform and Open Source Electronics Design Automation Suite.

This directory contains the design files for the TRax hardware. Source is KiCad but I have exported as PDF/JPG.

TRax-BlockDiagram Work in progress to document the overall system TRax-Controller Schematic and PCB layout of the controller board TRax-Relays** TRax relays and connector woring

Main components on the TRax Control Board

4N25

TRax Control Board bill of materials (BOM)

37 components, 12 distinct parts.

QtyPartRefs
7
4N25
U1, U2, U3, U4, U5, U6, U7
1
Inputs
J1
1
BldgPwr
J2
1
Outputs
J3
1
Grove LCD
J5
1
Raspberry Pi Header
J6
1
Green
D1
1
Red
D2
7
1000
C1, C2, C3, C4, C5, C6, C7
7
10K
R1, R2, R3, R4, R5, R6, R7
7
1K
R8, R9, R10, R11, R12, R13, R14
2
330
R15, R16

TRax Control Board design files

The KiCad project lives in the vmoa/trax-pi repository on GitHub; these links point at the commit this page was built from.

TRax Control Board: common questions

What microcontroller does the TRax Control Board use?

The TRax Control Board is built around the Raspberry Pi Header, from the Raspberry Pi family.

How big is the TRax Control Board?

The TRax Control Board measures 99.1 × 149.9 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the TRax Control Board?

37 components, from 12 distinct parts. The full bill of materials is listed on this page.

Where can I download the TRax Control Board design files?

From the vmoa/trax-pi repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the TRax Control Board design in my own project?

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

Can I test firmware for the TRax Control Board without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug Raspberry Pi firmware against it before you order a PCB.

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