Baja Speedometer
About the Baja Speedometer PCB
Baja Speedometer is an open source AVR/Arduino PCB design by UofA-BAJA, published on GitHub. It is a 2-layer board measuring 104.4 × 46.4 mm, with 23 components from 15 distinct parts.
Its main chip is the ARDUINO_NANO, from the AVR/Arduino family. Other key parts include the A3144 and NE555P. By type, the board carries 8 resistors, 7 capacitors, 2 ICs, 2 connectors and 2 diodes.
From the project
The software behind the electrical system in Baja Wildcat Racing.
The software behind the electrical system in Baja Wildcat Racing.
This is the BAJA Wildcat Racing team for school year 2024-2025.
Check out the 'doc' (documentation) folder in order to get started!
Main components on the Baja Speedometer
Baja Speedometer bill of materials (BOM)
23 components, 15 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | A3144 | PinHeader_1x03_P2.54mm_Vertical | U1 |
| 1 | NE555P | DIP-8_W7.62mm | U2 |
| 1 | Conn_01x02 | SolderWire-0.75sqmm_1x02_P4.8mm_D1.25mm_OD2.3mm | J1 |
| 1 | CAN to outer connector | SolderWire-0.1sqmm_1x04_P3.6mm_D0.4mm_OD1mm | J2 |
| 1 | HiLetgo CAN Bus | Jack_CanBus | UNIT_1 |
| 1 | ARDUINO_NANO | Arduino_Nano | UNIT_2 |
| 1 | LED | LED_D4.0mm | D1 |
| 1 | D | D_DO-41_SOD81_P7.62mm_Horizontal | D2 |
| 3 | 10µ | CP_Radial_D4.0mm_P2.00mm | C1, C6, C7 |
| 3 | 10n | C_Disc_D3.8mm_W2.6mm_P2.50mm | C2, C3, C4 |
| 1 | 220n | CP_Radial_D6.3mm_P2.50mm | C5 |
| 1 | 300 | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R1 |
| 5 | 10k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R2, R3, R4, R7, R8 |
| 1 | 22k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R5 |
| 1 | 33k | R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_Horizontal | R6 |
Baja Speedometer design files
The KiCad project lives in the UofA-BAJA/2024-2025-Firmware repository on GitHub; these links point at the commit this page was built from.
Baja Speedometer: common questions
What microcontroller does the Baja Speedometer use?
The Baja Speedometer is built around the ARDUINO_NANO, from the AVR/Arduino family.
How big is the Baja Speedometer PCB?
The Baja Speedometer measures 104.4 × 46.4 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Baja Speedometer?
23 components, from 15 distinct parts. The full bill of materials is listed on this page.
Where can I download the Baja Speedometer design files?
From the UofA-BAJA/2024-2025-Firmware repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.
Can I use the Baja Speedometer design in my own project?
The repository has no license, so all rights stay with UofA-BAJA. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the Baja Speedometer without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug AVR/Arduino firmware against it before you order a PCB.
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