2 layers85.8 × 94.2 mm
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 layers100 × 100 mm
ChargingPCB26
LSUTigerRacing/Electronics8This repository contains all of the KiCad Schematics for the 2026 TigerRacing Formula SAE's Electronics Subsystem.
- Size
- 100 × 100 mm
- Copper layers
- 2
- Thickness
- 2.09 mm
- Parts
- 61
- Nets
- 41
- Pads
- 177
- Tracks, vias
- 342, 324
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 21 Jun 2025
- Updated
- 21 Oct 2026
Overview
ChargingPCB26 is an open-source printed circuit board by LSUTigerRacing, from the LSUTigerRacing/Electronics repository on GitHub. It is a 2-layer board of 100 × 100 mm with 61 parts on 41 nets, routed with 342 tracks and 324 vias.
It is built around the PC817X2NSZW, SN74HC00N and SN74LS279AN, with the LM7805L-TF3-T, 0805W8F1003T5E (SMT业务专用) and ARG05BTC5000 among its other parts. Its parts include 23 resistors, 8 transistors, 6 capacitors, 6 diodes and 5 ICs.
Main components
12
PC817X2NSZW
DIP-4-30℃~+100℃ 1.2V 100mV@20mA,1mA 200mW 3us 4us 50mA 50mA 5kV 6V 80V DC DIP-4 Transistor, Photovoltaic Output Optoisolators ROHSSharp MicroelectronicsTransistor, Photovoltaic Output Optoisolators
SN74HC00N
DIP-14-40℃~+85℃ 1.5V~4.2V 15ns@6V,50pF 2V~6V 2uA 4 5.2mA 5.2mA 500mV~1.8V 74HC Series NAND Gate DIP-14 Logic Gates ROHSTexas InstrumentsLogic Gates
SN74LS279AN
PDIP-160℃~+70℃ 12ns 4 4.75V~5.25V 400uA 74LS 8mA SR Latch PDIP-16 Latches ROHSTexas InstrumentsLatches
LM7805L-TF3-T
TO-220F-20℃~+125℃@(Tj) 1 1A 2V 35V 40uV 5V 80dB@(120Hz) 8mA Fixed Over Current Protection、Over Temperature Protection Positive TO-220F Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSUTCVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
0805W8F1003T5E (SMT业务专用)
0805100kΩ ±1% 0805 Chip Resistor - Surface Mount ROHSUNI-ROYALChip Resistor - Surface MountARG05BTC5000
0805-55℃~+155℃ 125mW 150V 500Ω Thin Film Resistor ±0.1% ±25ppm/℃ 0805 Chip Resistor - Surface Mount ROHSViking TechChip Resistor - Surface Mount
SS34
SMA(DO-214AC)-55℃~+125℃ 3A 40V 500uA@40V 550mV@3A Independent SMA(DO-214AC) Schottky Diodes ROHSMDDSchottky Diodes
NCD0805R1
LED0805-30℃~+85℃ 1.6V~2.6V 130° 195mcd 25mA 615nm~630nm 630nm 65mW Discrete Diode Red 0805 LED Indication - Discrete ROHSFoshan NationStar OptoelectronicsLED Indication - Discrete
G2RL-1-DC12
插件,28.8x12.5mm-40℃~+85℃ 100mΩ 12A 12A@250VAC、12A@25VDC 12V 15ms 300V@DC、440V@AC 360Ω 400mW 5 5ms Non-Polarized - Single Coil One set changeover: 1C (SPDT - changeover) Silver Alloy (Cd-Free) 插件,28.8x12.5mm Power Relays ROHSOmronPower Relays
B3FS-1000P
SMD-4P,6.3x6mm-25℃~+70℃ 1N 24V 3.1mm 50mA 6.3mm 6mm Gull Wing Round Button SPST Surface Mount,Vertical SMD-4P,6.3x6mm Tactile Switches ROHSOmronTactile Switches
CC0402KRX5R6BB334
040210V 330nF X5R ±10% 0402 Multilayer Ceramic Capacitors MLCC - SMD/SMT ROHSYAGEOMultilayer Ceramic Capacitors MLCC - SMD/SMTKT-0805G
0805-40℃~+85℃ 100mW 120° 2.6V~3.1V 430mcd 513nm~528nm 525nm 5mA Discrete Diode Emerald Green Water Clear 0805 LED Indication - Discrete ROHSHubei KENTO ElecLED Indication - Discrete
README
README.md
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.
- Log into GitHub
- Click your profile picture → Settings
- Scroll down and click Developer settings (bottom of the left sidebar)
- Click Personal access tokens → Tokens (classic)
- Click Generate new token (classic)
- Give it a name (e.g.
git-access), set an expiration, and check the repo scope - 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:
git clone https://github.com/LSUTigerRacing/Electronics.git
cd ElectronicsWhen 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.
cd Electronics
git pull origin mainStep 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).
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.
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.
git push -u origin "your-branch-name"Step 6 — Open a Pull Request
- Go to the repository on GitHub
- Click the Pull requests tab
- Click New pull request
- Set the base branch to
mainand the compare branch to yours - Give it a clear title and description of what you changed
- 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
Parts
61| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R5, R6, R7, R13, R108, R109, R111, R113 |
| 6 | 10k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R8, R10, R105, R106 |
| 4 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R103, R104, R110, R112 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H101, H102, H103, H104 |
| 4 | Q_NMOS_GDS | Package_TO_SOT_THT:TO-251-3_Vertical | Q1, Q2, Q3, Q4 |
| 4 | Q_NPN_BEC | Package_TO_SOT_SMD:SOT-23 | Q103, Q104, Q105, Q106 |
| 3 | 0.01u | Capacitor_SMD:C_0402_1005Metric | C101, C102, C106 |
| 3 | 500 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R3, R4, R9 |
| 3 | D_Schottky | Diode_SMD:D_SMA | D4, D101, D102 |
| 2 | 100 | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R11, R12 |
| 2 | 100n | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C3, C117 |
| 2 | LED | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1, D2 |
| 2 | LOGO | LOGO | G***, G*** |
| 2 | Molex6pin | Connector_Molex:Molex_Nano-Fit_105314-xx06_2x03_P2.50mm_Horizontal | J1, J2 |
| 2 | Relay_SPDT_Omron_G2RL-1 | Relay_THT:Relay_SPDT_Omron_G2RL-1 | K101, K102 |
| 2 | SFH617A-1 | Package_DIP:DIP-4_W7.62mm | U1, U2 |
| 2 | SW_Omron_B3FS | Button_Switch_SMD:SW_SPST_Omron_B3FS-100xP | SW101, SW102 |
| 1 | 0.33u | Capacitor_SMD:C_0402_1005Metric | C105 |
| 1 | 74HC00 | Package_DIP:DIP-14_W7.62mm | U6 |
| 1 | 74LS279 | Package_DIP:DIP-16_W7.62mm | U5 |
| 1 | Fuse | Fuse:Fuseholder_Blade_Mini_Keystone_3568 | F1 |
| 1 | LED GREEN | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D3 |
| 1 | LM7805_TO220 | Package_TO_SOT_THT:TO-220-3_Vertical | U107 |
Questions
How big is the ChargingPCB26 PCB?
It measures 100 × 100 mm and has 2 copper layers, 2.09 mm thick.
What parts does the ChargingPCB26 use?
61 parts, built around the PC817X2NSZW, SN74HC00N, SN74LS279AN and LM7805L-TF3-T. 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 ChargingPCB26 KiCad files?
From the LSUTigerRacing/Electronics repository on GitHub, at the commit this page was made from: the board is Charging_PCB/Charging_26/ChargingPCB26/ChargingPCB26/ChargingPCB26.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the ChargingPCB26 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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