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2 layers90.3 × 67 mmBPSD-2025, the printed circuit board in 3D

This repository contains all of the KiCad Schematics for the 2026 TigerRacing Formula SAE's Electronics Subsystem.

Size
90.3 × 67 mm
Copper layers
2
Thickness
1.6 mm
Parts
68
Nets
33
Pads
191
Tracks, vias
411, 773
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
21 Jun 2025
Updated
21 Oct 2026

Overview

BPSD-2025 is an open-source printed circuit board by LSUTigerRacing, from the LSUTigerRacing/Electronics repository on GitHub. It is a 2-layer board of 90.3 × 67 mm with 68 parts on 33 nets, routed with 411 tracks and 773 vias.

It is built around the SN74AHC1G08DBVR, SN74AHC1G32DBVR and LM1117DT-5.0, with the SN74AHC1G00DBVR among its other parts. Its parts include 20 capacitors, 18 resistors, 13 ICs, 5 connectors and 2 transistors.

Main components

4

README

README.md
TigerRacing Logo


This repository contains all of the KiCad Schematics for the TigerRacing Formula SAE's Electronics Subsystem.

Prerequisites

Board Templates

When making a new PCB, if the board is to be manufactured by JLCPCB. import the corresponding board constraints from Board Templates/JLC

Getting Started

This section will walk you through downloading the repository to your computer for the first time. You only need to do this once.

1. Generate a GitHub Token

A token is essentially a password that lets Git on your computer talk to GitHub securely.

  1. Log into GitHub
  2. Click your profile picture → Settings
  3. Scroll down and click Developer settings (bottom of the left sidebar)
  4. Click Personal access tokens → Tokens (classic)
  5. Click Generate new token (classic)
  6. Give it a name (e.g. git-access), set an expiration, and check the repo scope
  7. Click Generate token and copy it — you won't be able to see it again!

2. Clone the Repository

"Cloning" means downloading a full copy of the repository to your computer.

Open Git Bash and run the following commands one at a time:

sh
git clone https://github.com/LSUTigerRacing/Electronics.git
cd Electronics

When prompted for a password, paste the token you copied in the previous step.

3. Open the Project in KiCad

In Git Bash, highlight and right-click Electronics to open the folder in File Explorer. From there, open the KiCad project file (.kicad_pro).


Contributing

This section covers the full workflow for making changes and submitting them every time you work on something.

[!IMPORTANT] Never commit directly to main. All changes must go through a pull request.

Step 1 — Make sure you're up to date

Before starting any work, pull the latest changes from the repository so you're not working on an outdated copy.

sh
cd Electronics
git pull origin main

Step 2 — Create a branch

A "branch" is your own isolated workspace. Think of it like making a photocopy of the project — you make your edits on the copy, and only merge it back once everything looks good.

Replace your-branch-name with something descriptive (e.g. fault-latch-rework).

sh
git checkout -b "your-branch-name"

Step 3 — Make your edits

Open the KiCad project and make your changes. Save your work when done.

Step 4 — Stage and commit your changes

"Staging" tells Git which files to include, and "committing" saves a snapshot of those changes with a description.

sh
git add .
git commit -m "Brief description of what you changed"

Step 5 — Push your branch to GitHub

"Pushing" uploads your local branch so others (and GitHub) can see it.

sh
git push -u origin "your-branch-name"

Step 6 — Open a Pull Request

  1. Go to the repository on GitHub
  2. Click the Pull requests tab
  3. Click New pull request
  4. Set the base branch to main and the compare branch to yours
  5. Give it a clear title and description of what you changed
  6. Click Create pull request

A reviewer will look over your changes. Once approved, your branch will be merged into main and can then be deleted.


PCB Gallery

Fault Latch

FaultLatch

Parts

68
QtyValueFootprintReferences
140.1uFCapacitor_SMD:C_1206_3216MetricC13, C14, C15, C16, C17, C18, C19, C20, C21, C22, C23, C24, C25, C26
9100kResistor_SMD:R_1210_3225MetricR11, R12, R13, R14, R15, R16, R17, R21, R24
6LM397Package_TO_SOT_SMD:SOT-23-5U4, U5, U6, U9, U10, U12
4, , ,
310uFCapacitor_SMD:C_1206_3216MetricC2, C4, C5
2100uFCapacitor_SMD:C_1206_3216MetricC10, C11
210kResistor_SMD:R_1210_3225MetricR19, R22
210kPotentiometer_THT:Potentiometer_Bourns_3296W_VerticalRV6, RV7
21kResistor_SMD:R_1210_3225MetricR20, R23
2NMOSPackage_TO_SOT_SMD:SOT-23Q1, Q2
2SAMMY-2PINBSPD:SAMMY-2PINJ3, J5
2SAMMY-3PINBSPD:SAMMY-3PINJ1, J2
2SN74AHC1G08DBVRPackage_TO_SOT_SMD:SOT-23-5U7, U11
2SN74AHC1G32DBVRPackage_TO_SOT_SMD:SOT-23-5U17, U18
119.1kResistor_SMD:R_1210_3225MetricR2
11nfCapacitor_SMD:C_1206_3216MetricC1
12.2kResistor_SMD:R_1210_3225MetricR18
139kResistor_SMD:R_1210_3225MetricR4
1470kResistor_SMD:R_1210_3225MetricR1
154.9kResistor_SMD:R_1206_3216MetricR3
1LM1117DT-5.0Package_TO_SOT_SMD:TO-252-3_TabPin2U3
1LOGOLOGOG***
1SAMMY-5PINBSPD:SAMMY-5PINJ4
1SN74AHC1G00DBVRPackage_TO_SOT_SMD:SOT-23-5U8
1TP_ACCUMTestPoint:TestPoint_Pad_D1.5mmTP8
1TP_BSETestPoint:TestPoint_Pad_D1.5mmTP9
1TP_GNDTestPoint:TestPoint_Pad_D1.5mmTP10
1~Package_SO:SOIC-8_3.9x4.9mm_P1.27mmU1

Questions

How big is the BPSD-2025 PCB?

It measures 90.3 × 67 mm and has 2 copper layers, 1.6 mm thick.

What parts does the BPSD-2025 use?

68 parts, built around the SN74AHC1G08DBVR, SN74AHC1G32DBVR, LM1117DT-5.0 and SN74AHC1G00DBVR. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.

Where can I download the BPSD-2025 KiCad files?

From the LSUTigerRacing/Electronics repository on GitHub, at the commit this page was made from: the board is BSPD/BSPD-revamp/BPSD-2025/BPSD-2025.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the BPSD-2025 design in my own project?

Its repository states no licence, so its author keeps all rights: ask LSUTigerRacing before reusing the design.

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