4 layers20.3 × 40 mm Temp sensor, the printed circuit board in 3D

Temp sensor

Home automation

Size: 20.3 × 40 mm
Copper layers: 4
Thickness: 1.6 mm
Parts: 21
Nets: 17
Pads: 112
Tracks, vias: 276, 38
Pours: 3
Routed: Yes
KiCad: KiCad 5 (file 20171130)
Created: 26 May 2019
Updated: 14 Oct 2024

Overview

Temp sensor is an open-source printed circuit board by matthewlai, from the matthewlai/WiredHut repository on GitHub, published under the GPL-3.0 licence. It is a 4-layer board of 20.3 × 40 mm with 21 parts on 17 nets, routed with 276 tracks and 38 vias.

It is built around the CH340C, ESP32-WROOM-32 and AP2112K-3.3, with the SHT31-DIS-F among its other parts. Its parts include 6 capacitors, 6 resistors, 4 ICs, 2 transistors and 1 diode. It belongs with the sensors and measurement boards and the ESP32 boards of this library.

Main components

README

README.md

WiredHut

Home automation

Parts

Qty	Value	Footprint	References
5	10kR	Resistor_SMD:R_0402_1005Metric	R1, R2, R3, R4, R5
2	0.1uF	Resistor_SMD:R_0402_1005Metric	C2, C3
2	1uF	Resistor_SMD:R_0603_1608Metric	C4, C5
2	Q_NPN_BEC	Package_TO_SOT_SMD:SOT-23	Q1, Q2
1	10uF	Resistor_SMD:R_0402_1005Metric	C1
1	4.7uF	Resistor_SMD:R_0402_1005Metric	C6
1	47R	Resistor_SMD:R_0402_1005Metric	R12
1	AP2112K-3.3	Package_TO_SOT_SMD:SOT-23-5	U1
1	CH340C	Package_SO:SOIC-16_3.9x9.9mm_P1.27mm	U4
1	ESP32-WROOM-32	RF_Module:ESP32-WROOM-32	U3
1	Green	LED_SMD:LED_0603_1608Metric	D11
1	SHT31-DIS	Sensor_Humidity:Sensirion_DFN-8-1EP_2.5x2.5mm_P0.5mm_EP1.1x1.7mm	U2
1	SolderJumper_2_Open	Jumper:SolderJumper-2_P1.3mm_Open_RoundedPad1.0x1.5mm	JP1
1	USB_A	usb:USB-A-XKB_U217	J1

Questions

How big is the Temp sensor PCB?

It measures 20.3 × 40 mm and has 4 copper layers, 1.6 mm thick.

What parts does the Temp sensor use?

21 parts, built around the CH340C, ESP32-WROOM-32, AP2112K-3.3 and SHT31-DIS-F. 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 Temp sensor KiCad files?

From the matthewlai/WiredHut repository on GitHub, at the commit this page was made from: the board is hardware/temp_sensor/temp_sensor.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.

Can I use the Temp sensor design in my own project?

Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).

Category and platform

Sensors and measurement ESP32

Project files

Show this board on your page

A live frame, for any web page

<iframe src="https://pcbkit.io/embed/boards/matthewlai-wiredhut" title="Temp sensor in PCBKit" width="100%" height="480" style="border:0;border-radius:12px" allow="fullscreen" loading="lazy"></iframe>

A picture

<img src="https://pcbkit.io/embed/boards/matthewlai-wiredhut.jpg" alt="Temp sensor" width="1200" height="900">

A picture that opens the board, for a README

[![Temp sensor](https://pcbkit.io/embed/boards/matthewlai-wiredhut.jpg?size=s)](https://pcbkit.io/boards/matthewlai-wiredhut)

Source

Repository: matthewlai/WiredHut
Board file: hardware/temp_sensor/temp_sensor.kicad_pcb
Commit: 4069e2f
Licence: GPL-3.0

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