TTSI
About the TTSI PCB
TTSI is an open source PCB design by LSUTigerRacing, published on GitHub. It is a 2-layer board measuring 71 × 46 mm, with 32 components from 19 distinct parts.
Other key parts include the 641964-1, R-78E5.0-0.5, 74AHC1G32, 74AHC1G08 and LM555XM. By type, the board carries 8 capacitors, 8 resistors, 7 ICs, 6 transistors and 3 diodes.
From the project
This repository contains all of the KiCad Schematics for the 2026 TigerRacing Formula SAE's Electronics Subsystem.
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Main components on the TTSI
TTSI bill of materials (BOM)
32 components, 19 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 3 | 641964-1 | 641964-1_TYC | U101, U102, U105 |
| 1 | R-78E5.0-0.5 | R-78E-0.5_RCP | U103 |
| 1 | 74AHC1G32 | SOT-353_SC-70-5 | U104 |
| 1 | 74AHC1G08 | SOT-353_SC-70-5 | U106 |
| 1 | LM555XM LM555xM | SOIC-8_3.9x4.9mm_P1.27mm | U107 |
| 5 | Q_NMOS_GSD | SOT-23 | Q101, Q102, Q103, Q105, Q106 |
| 1 | Q_PMOS_GSD | SOT-523 | Q104 |
| 2 | D_TVS | D_SOD-123F | D101, D102 |
| 1 | RED | R_0603_1608Metric | D103 |
| 2 | 10UF 10uF | C_0402_1005Metric | C101, C102 |
| 3 | 0.1U 0.1u | C_0402_1005Metric | C103, C105, C107 |
| 1 | 1u | C_0402_1005Metric | C104 |
| 1 | .01u | C_0402_1005Metric | C106 |
| 1 | 22U 22u | C_0402_1005Metric | C108 |
| 3 | 10K 10k | R_0603_1608Metric | R101, R103, R105 |
| 1 | 500R | R_0603_1608Metric | R102 |
| 2 | 1k | R_0603_1608Metric | R104, R106 |
| 1 | 15K 15k | R_0603_1608Metric | R107 |
| 1 | 100K 100k | R_0603_1608Metric | R108 |
TTSI design files
The KiCad project lives in the LSUTigerRacing/Electronics repository on GitHub; these links point at the commit this page was built from.
- LayoutTTSI/TTSI.kicad_pcb
- SchematicTTSI/TTSI.kicad_sch
- BOMTTSI/production/bom.csv
TTSI: common questions
How big is the TTSI PCB?
The TTSI measures 71 × 46 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the TTSI?
32 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the TTSI design files?
From the LSUTigerRacing/Electronics repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the TTSI design in my own project?
The repository has no license, so all rights stay with LSUTigerRacing. Use it as a reference, and ask the author before reusing the design.
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