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2 layersClimon, the printed circuit board in 3D

ESP32 based climate sensor

Copper layers
2
Thickness
1.6 mm
Parts
4
Nets
18
Pads
28
Tracks, vias
0, 0
Routed
Not yet
KiCad
KiCad 8.0 (file 20240108)
Created
8 Feb 2026
Updated
22 Jun 2026

Overview

Climon is an open-source printed circuit board by djcolon, from the djcolon/climon repository on GitHub. It is a 2-layer board with 4 parts on 18 nets.

Its parts include 2 ICs, 1 resistor and 1 switch. It belongs with the sensors and measurement boards and the ESP32 and RISC-V boards of this library.

README

README.md

cliMon

Daniel Colon - 23/03/2025

An ESP32 that reads temperature, humidity and pressure using a che BME-280 clone. Connects to wifi and makes sensor data available as JSON on a http call.

Built with an ESP32-C3 Mini, which I bought for £1.83 here.

And a BME-280-3.3 which is £2.69 here.

Built using PlatformIO

Testing

To run tests you need to have configured the platformIO native environment. See the platformIO guides for more detail.

After installation, run tests by navigating to native > advanced > test in the platformIO sidebar.

Images

The devboard pinout.

The devboard pinout

Parts

4
QtyValueFootprintReferences
110kResistor_THT:R_Axial_DIN0207_L6.3mm_D2.5mm_P10.16mm_HorizontalR1
1ESP32-C3_SUPERMINIfootprints:MODULE_ESP32-C3_SUPERMINIU1
1SW_PushButton_Switch_THT:SW_PUSH_6mm_H5mmSW1
1module_bme280usini_sensors:module_bme280U2

Questions

What parts does the Climon use?

4 parts. 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 Climon KiCad files?

From the djcolon/climon repository on GitHub, at the commit this page was made from: the board is kicad/cliMon/cliMon.kicad_pcb and its schematic kicad/cliMon/cliMon.kicad_sch. PCBKit opens the board in the browser, with nothing to install.

Can I use the Climon design in my own project?

Its repository states no licence, so its author keeps all rights: ask djcolon before reusing the design.

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