Skip to the content
PCBKitNew board
2 layers80 × 105 mmDischarge26, the printed circuit board in 3D

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

Size
80 × 105 mm
Copper layers
2
Thickness
1.6 mm
Parts
13
Nets
10
Pads
34
Tracks, vias
30, 234
Pours
1
Routed
Yes
KiCad
KiCad 9.0 (file 20241229)
Created
21 Jun 2025
Updated
21 Oct 2026

Overview

Discharge26 is an open-source printed circuit board by LSUTigerRacing, from the LSUTigerRacing/Electronics repository on GitHub. It is a 2-layer board of 80 × 105 mm with 13 parts on 10 nets, routed with 30 tracks and 234 vias.

It is built around the HSA503K0J. Its parts include 3 resistors, 2 diodes, 2 connectors, 1 transistor and 1 switch.

Main components

1

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

13
QtyValueFootprintReferences
4MountingHoleMountingHole:MountingHole_4.3mm_M4H1, H2, H3, H4
1100Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolderR3
110kResistor_SMD:R_1206_3216MetricR51
1D_ZenerDiode_SMD:D_SOD-123D3
1HSA503K0JDischarge:Discharge_ResistorR50
1HV_ConnDischarge:MicroFit_4pinJ1
1LV_ConnConnector_Molex:Molex_Nano-Fit_105313-xx03_1x03_P2.50mm_HorizontalJ2
1Q_NMOS_GDSPackage_TO_SOT_THT:TO-251-3_VerticalQ1
1Relay_SPST-NCDischarge:Discharge_relayK4
1SchottkyDiode_SMD:D_SMAD1

Questions

How big is the Discharge26 PCB?

It measures 80 × 105 mm and has 2 copper layers, 1.6 mm thick.

What parts does the Discharge26 use?

13 parts, built around the HSA503K0J. 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 Discharge26 KiCad files?

From the LSUTigerRacing/Electronics repository on GitHub, at the commit this page was made from: the board is PrechargeDischarge/Discharge26/Discharge26.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Discharge26 design in my own project?

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

More from LSUTigerRacing/Electronics

12
  • 2 layers85.8 × 94.2 mmFault Latch 2, the printed circuit board in 3D

    Fault Latch 2

    LSUTigerRacing/Electronics

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

    123 parts8
  • 2 layers133 × 98 mmPrecharge, the printed circuit board in 3D

    Precharge

    LSUTigerRacing/Electronics

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

    121 parts8
  • 2 layers90.3 × 67 mmBPSD-2025, the printed circuit board in 3D

    BPSD-2025

    LSUTigerRacing/Electronics

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

    68 parts8
  • 2 layers68.5 × 43 mmBPSD-2025, the printed circuit board in 3D

    BPSD-2025

    LSUTigerRacing/Electronics

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

    64 parts8
  • 2 layers72.8 × 55.9 mmBPSD-2025, the printed circuit board in 3D

    BPSD-2025

    LSUTigerRacing/Electronics

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

    64 parts8
  • 2 layers63.9 × 45.1 mmJosh SafetyCircuit, the printed circuit board in 3D

    Josh SafetyCircuit

    LSUTigerRacing/Electronics

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

    63 parts8
  • 2 layers100 × 100 mmChargingPCB26, the printed circuit board in 3D

    ChargingPCB26

    LSUTigerRacing/Electronics

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

    61 parts8
  • 2 layers90.3 × 67 mmBPSD-2025, the printed circuit board in 3D

    BPSD-2025

    LSUTigerRacing/Electronics

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

    60 parts8
  • 2 layers80 × 70 mmCharging PCB, the printed circuit board in 3D

    Charging PCB

    LSUTigerRacing/Electronics

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

    59 parts8
  • 2 layers81 × 34 mmRML HVI, the printed circuit board in 3D

    RML HVI

    LSUTigerRacing/Electronics

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

    49 parts8
  • 2 layersChargingPCB26(THT), the printed circuit board in 3D

    ChargingPCB26(THT)

    LSUTigerRacing/Electronics

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

    46 parts8
  • 2 layers72.6 × 32.5 mmRML Yianni Revamp, the printed circuit board in 3D

    RML Yianni Revamp

    LSUTigerRacing/Electronics

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

    45 parts8

Similar boards

  • 2 layers40 × 20 mmUsb uart, the printed circuit board in 3D

    Usb uart

    earthtojake/text-to-cad

    Design physical products with AI

    13 parts26kMIT
  • 2 layers35 × 29 mmMagSpoofTC, the printed circuit board in 3D

    MagSpoofTC

    samyk/magspoof

    A portable device that can spoof/emulate any magnetic stripe, credit card or hotel card "wirelessly", even on standard magstripe (non-NFC/RFID) readers.

    13 parts4.2k
  • 2 layers20.6 × 23.6 mmAO-03 signal amplifier, the printed circuit board in 3D

    AO-03 signal amplifier

    fossasia/pslab-scripts

    Pocket Science Lab - Scripts for Sensor Experiments

    13 parts1.6kApache-2.0
  • 2 layers47 × 35.6 mmMX7-C-35PL C11, the printed circuit board in 3D

    MX7-C-35PL C11

    rusefi/rusefi

    rusefi - GPL internal combustion engine control unit

    13 parts1.2k
  • 2 layers95 × 95 mmCube batteryboard, the printed circuit board in 3D

    Cube batteryboard

    willem-pennings/balancing-cube

    A cube that balances itself in a corner or edge using reaction wheels

    13 parts1.1kGPL-3.0
  • 2 layers15.2 × 20.3 mmPt100stick, the printed circuit board in 3D

    Pt100stick

    VoronDesign/Voron-Hardware

    Cool Hardware designed by the Voron Design group

    13 parts1.1kGPL-3.0
  • 2 layers53.9 × 23.2 mmBuffer, the printed circuit board in 3D

    Buffer

    hoglet67/RGBtoHDMI

    Bare-metal Raspberry Pi project that provides pixel-perfect sampling of Retro Computer RGB/YUV video and conversion to HDMI

    13 parts1kGPL-3.0