2 layers87.9 × 98.7 mm
Bitdoglab smd
BitDogLab/BitDogLab
Open-source educational hardware for embedded systems, programming, electronics, and physical computing.
138 parts203
2 layers95.8 × 62.5 mm
Thermal camera
simojo/thermal-camera3Thermal camera based on rp2040 (mc), mlx90640 (camera), and st7789 (display).
- Size
- 95.8 × 62.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 31
- Nets
- 48
- Pads
- 121
- Tracks, vias
- 162, 15
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 16 Oct 2025
- Updated
- 27 Apr 2026
Overview
Thermal camera is an open-source printed circuit board by simojo, from the simojo/thermal-camera repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 95.8 × 62.5 mm with 31 parts on 48 nets, routed with 162 tracks and 15 vias.
It is built around the AO3401A and SC0918. Its parts include 9 resistors, 5 capacitors, 5 diodes, 2 ICs and 1 transistor. It belongs with the lEDs and displays boards and the RP2040 boards of this library.
Main components
2README
README.mdThermal camera based on Raspberry Pi Pico and MLX90640
Overview
This camera was a dream I've had for a while to use up some parts I had lying around on my bench. I took an embedded system design course in Fall 2025 under Linden McClure, and I used it as an opportunity to prototype a design using wire wrapping. The code worked, and I could use it as a thermal camera, but in April 2026, I finally taped it out to a PCB which is conducive to an enclosure and being more rugged. I wrote the library for displaying to the thin-film transistor display manually as the key effort to the project.
User features
- 7 FPS refresh rate
- Dynamic color mapping
- Real-time temperature readout (min/max)
- USB-C charging
- 3.7V Lithium polymer/ion battery
Technical Features
- CMake based project
- KiCad based layout
- Supports charging over battery
- MCP73831 charger with charging/full indicators
- 3.3V logic and power
Parts
31| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | 1u | Capacitor_SMD:C_1206_3216Metric | C1, C2, C4, C5 |
| 3 | 1k | Resistor_SMD:R_1206_3216Metric | R3, R5, R6 |
| 3 | LED | LED_SMD:LED_1206_3216Metric | D2, LED_CHARGE1, LED_FULL1 |
| 2 | 2k | Resistor_SMD:R_1206_3216Metric | R1, R2 |
| 2 | 5.1k | Resistor_SMD:R_1206_3216Metric | R8, R9 |
| 2 | D_Schottky | Diode_SMD:D_1206_3216Metric | D1, D4 |
| 1 | 0.1u | Capacitor_SMD:C_1206_3216Metric | C3 |
| 1 | 100k | Resistor_SMD:R_1206_3216Metric | R4 |
| 1 | 4.7k | Resistor_SMD:R_1206_3216Metric | R7 |
| 1 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1 |
| 1 | Battery | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | BT1 |
| 1 | LD1117S33TR_SOT223 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U1 |
| 1 | MCP73831-2-OT | Package_TO_SOT_SMD:SOT-23-5 | U2 |
| 1 | SC0918 | MCU:RPi_Pico_SC0918 | A1 |
| 1 | USB_C_Receptacle_PowerOnly_6P | Connector_USB:USB_C_Receptacle_GCT_USB4125-xx-x-0190_6P_TopMnt_Horizontal | J2 |
| 1 | ~ | Display:Adafruit-ST7789 | SST1 |
| 1 | ~ | Camera:MLX90640 | MLX1 |
The 27 most common of 31 parts.
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Questions
How big is the Thermal camera PCB?
It measures 95.8 × 62.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Thermal camera use?
31 parts, built around the AO3401A and SC0918. 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 Thermal camera KiCad files?
From the simojo/thermal-camera repository on GitHub, at the commit this page was made from: the board is pcb/pcb.kicad_pcb and its schematic pcb/pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Thermal camera design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).