6 layers83.5 × 56 mm
2 layers50.8 × 45.7 mm
Wifi temp sensor
richClubb/wifi_temp_sensor- Size
- 50.8 × 45.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 42
- Pads
- 81
- Tracks, vias
- 97, 16
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 31 Dec 2023
- Updated
- 10 Oct 2025
Overview
Wifi temp sensor is an open-source printed circuit board by richClubb, from the richClubb/wifi_temp_sensor repository on GitHub. It is a 2-layer board of 50.8 × 45.7 mm with 13 parts on 42 nets, routed with 97 tracks and 16 vias.
It is built around the CH340T and ESP8266EX. Its parts include 5 capacitors, 5 connectors, 2 ICs and 1 switch. It belongs with the radio and wireless and sensors and measurement boards and the ESP8266 boards of this library.
Main components
2
CH340T
SSOP-20-209mil200uA 20mA 2Mbps 3.3V、5V Transceiver USB 2.0 SSOP-20-209mil USB Converters ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
ESP8266EX
QFN-32-EP(5x5)-40℃~+125℃ -91dBm 120mA 2.4GHz 2.4GHz~2.4835GHz 2.5V~3.6V 21.5dBm 50mA 72.2Mbps SPI、UART、I2C、I2S WiFi transceiver QFN-32-EP(5x5) RF Transceiver ICs ROHSEspressif SystemsRF Transceiver ICs
README
hardware/README.mdWiFI Temp Sensor Hardware
- Currently on KiCad 7
Additional symbol and footprint libraries needed
- None
BOM
- ESP8266 - https://www.bitsboxuk.com/index.php?main_page=product_info&cPath=302_312&products_id=2592
- LDO - https://www.mouser.co.uk/ProductDetail/Diodes-Incorporated/AZ1117CR-3.3TRG1?qs=FKu9oBikfSlEg7waHw2tMw%3D%3D
- SMD Capacitors - 10uF, 22uF -
- PCB Sockets - 3 x 4 pin, 1 x 4+4 pin - https://www.bitsboxuk.com/index.php?main_page=index&cPath=225_230
- USB Micro B Socket - https://uk.rs-online.com/web/p/usb-connectors/1789510
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | C_Small | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C3, C4, C5 |
| 1 | 10uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C1 |
| 1 | 22uF | Capacitor_SMD:C_1206_3216Metric_Pad1.33x1.80mm_HandSolder | C2 |
| 1 | AZ1117-3.3 | Package_TO_SOT_SMD:SOT-89-3_Handsoldering | U2 |
| 1 | BootMode | buttons:TL1105RA | SW1 |
| 1 | CH340T | Package_SO:SSOP-20_5.3x7.2mm_P0.65mm | U1 |
| 1 | Display | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J5 |
| 1 | ESP8266 | Connector_PinSocket_2.54mm:PinSocket_2x04_P2.54mm_Vertical | J2 |
| 1 | Prog | Connector_PinSocket_2.54mm:PinSocket_1x06_P2.54mm_Horizontal | J4 |
| 1 | TempSensor | Connector_PinSocket_2.54mm:PinSocket_1x04_P2.54mm_Vertical | J3 |
| 1 | USB_C_Receptacle | Connector_USB:USB_C_Receptacle_GCT_USB4105-xx-A_16P_TopMnt_Horizontal | J1 |
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Questions
How big is the Wifi temp sensor PCB?
It measures 50.8 × 45.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Wifi temp sensor use?
13 parts, built around the CH340T and ESP8266EX. 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 Wifi temp sensor KiCad files?
From the richClubb/wifi_temp_sensor repository on GitHub, at the commit this page was made from: the board is hardware/wifi_temp_sensor.kicad_pcb and its schematic hardware/wifi_temp_sensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Wifi temp sensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask richClubb before reusing the design.