HardLabs

Thermal camera

Badbird5907·thermal-camera·thermal-pcb/thermal-pcb.kicad_pcb

Thermal camera PCB layout, top view — open source ESP32 board by Badbird5907

About the Thermal camera PCB

Thermal camera is an open source ESP32 PCB design by Badbird5907, published on GitHub under the MIT license. It is a 2-layer board measuring 98 × 56 mm, with 41 components from 31 distinct parts.

Its main chip is the ESP32-S3-WROOM-1, from the ESP32 family. Other key parts include the MCP73871, MIC5504-3.3YM5, DW01A and MLX90640ESF-BAB-000-SP. By type, the board carries 14 resistors, 9 capacitors, 5 ICs, 5 connectors, 3 diodes and 2 transistors.

It belongs with the displays & leds designs in this gallery.

From the project

My design of a cheap and affordable thermal camera

This is my design of a cheap and affordable thermal camera (< $60, excl shipping)!. It utilizes the MLX90640 as the image sensor, and the esp32 to process and display the images on a TFT LCD screen.

I made this project because off the shelf thermal cameras are exuberantly expensive, and I need one to figure out if my PCBs are shorting.

The hardest part of this project so far was designing the battery charging circuit, as I needed to use multiple ICs to charge the battery, keep the voltage stable, and to keep the battery from overcharging.

Thermal camera, from the project README
From the project README

Main components on the Thermal camera

ESP32-S3-WROOM-1MCP73871MIC5504-3.3YM5DW01AMLX90640ESF-BAB-000-SP

Thermal camera bill of materials (BOM)

41 components, 31 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
ESP32-S3-WROOM-1
U1
1
MCP73871
U2
1
MIC5504-3.3YM5
U3
1
DW01A
U4
1
MLX90640ESF-BAB-000-SP
U5
1
FS8205
Q1
1
AO3415
Hottech(合科泰)
Q2
1
FALLBACK_IN
J1
1
Conn_01x14_Pin
J2
1
USB_C_Receptacle_USB2.0_16P
J3
1
Conn_01x04_Socket
J4
1
BATT_CONN
J5
1
1.5A
F1
1
MFS201N-16-Z
SW1
1
10k
TH1
1
LED_B
D1
1
LED_R
D2
1
LED_G
D3
2
4.7uF
C1, C2
1
10uF
C3
Show 11 more
QtyPartRefs
3
1uF
C4, C5, C8
2
0.1uF
C6, C9
1
22uF
C7
2
5.1k
R1, R2
3
470
R3, R8, R9
1
100
R4
3
10k
R5, R6, R7
1
4.02k
R10
1
20k
R11
2
2.2k
R12, R13
1
1k
R14

Thermal camera design files

The KiCad project lives in the Badbird5907/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 ESP32-S3-WROOM-1, from the ESP32 family.

How big is the Thermal camera PCB?

The Thermal camera measures 98 × 56 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Thermal camera?

41 components, from 31 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 Badbird5907/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?

Yes, under the terms of its MIT license, which Badbird5907 chose for the repository.

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 ESP32 firmware against it before you order a PCB.

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