HardLabs

Thermal camera

fedetft·thermal_camera·hardware_design/thermal_camera_v2.kicad_pcb

Thermal camera PCB layout, top view — open source STM32 board by fedetft

About the Thermal camera PCB

Thermal camera is an open source STM32 PCB design by fedetft, published on GitHub. It is a 2-layer board measuring 69 × 34 mm, with 50 components from 26 distinct parts.

Its main chip is the STM32F205RC, from the STM32 family. Other key parts include the LP2981-3.3, TP4056, W25Q64 and MLX90640-BAB. By type, the board carries 16 capacitors, 15 resistors, 5 ICs, 5 connectors, 2 transistors and 2 switches.

It belongs with the sensors designs in this gallery.

From the project

An open source thermal camera, including firmware, schematic and PCB design.

An open source thermal camera, including firmware, schematic and PCB design.

Principle of operation ====================== Showing a frame on the thermal camera requires to perform three operations

Reading the raw ADC data from the sensor via I2C Processing the data (compute temperatures, compute pixel colors) * Writing the computed frame to the display via SPI

Thermal camera, from the project README
From the project README

Main components on the Thermal camera

STM32F205RCLP2981-3.3TP4056W25Q64MLX90640-BAB

Thermal camera bill of materials (BOM)

50 components, 26 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
STM32F205RC
U1
1
LP2981-3.3
U2
1
TP4056
U3
1
W25Q64
U4
1
MLX90640-BAB
MLX90640
U5
1
AP2312
Q1
1
AP2311
Q2
1
8MHZ
8MHz
Y1
1
Conn_01x04_Female
J1
1
Conn_01x01_Male
J2
1
Conn_01x07_Female
J3
1
Conn_01x01_Female
J4
1
USB_B_Mini
J5
2
Conn_01x01_Male
B+1, B-1
2
1-1825910-4
SW1, SW2
1
BAT54A
D1
1
LED
D2
5
1u
C1, C2, C4, C11, C15
6
100N
100n
C3, C5, C8, C9, C10, C14
2
2U2
2u2
C6, C7
Show 6 more
QtyPartRefs
2
10P
10p
C12, C13
1
100N
100n
C16
5
3K3
3k3
R1, R3, R6, R9, R10
4
220K
220k
R2, R4, R5, R8
1
470
R7
5
0
R11, R12, R13, R14, R15

Thermal camera design files

The KiCad project lives in the fedetft/thermal_camera repository on GitHub; these links point at the commit this page was built from.

Thermal camera: common questions

What microcontroller does the Thermal camera use?

The Thermal camera is built around the STM32F205RC, from the STM32 family.

How big is the Thermal camera PCB?

The Thermal camera measures 69 × 34 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Thermal camera?

50 components, from 26 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 Thermal camera design files?

From the fedetft/thermal_camera 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 Thermal camera design in my own project?

The repository has no license, so all rights stay with fedetft. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the Thermal camera without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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