2 layers33.7 × 97.8 mm
HAN ESP TSS721
UtilitechAS/amsreader-firmware
ESP8266 and ESP32 compatible firmware to read, interpret and publish data to MQTT from smart electrical meters, both DLMS and DSMR is supported
29 parts470
2 layers25.4 × 27 mm
WPalaSensor
Domochip/WPalaSensor3D1Mini and a DAC to replace Palazzetti stove temperature sensor
- Size
- 25.4 × 27 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 12
- Nets
- 18
- Pads
- 41
- Tracks, vias
- 62, 1
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 13 Mar 2018
- Updated
- 7 Nov 2026
Overview
WPalaSensor is an open-source printed circuit board by Domochip, from the Domochip/WPalaSensor repository on GitHub. It is a 2-layer board of 25.4 × 27 mm with 12 parts on 18 nets, routed with 62 tracks and 1 via.
It is built around the DS18B20. Its parts include 4 resistors, 3 capacitors, 3 connectors and 2 ICs. It belongs with the sensors and measurement boards and the ESP8266 boards of this library.
Main components
1README
README.md
WPalaSensor
This project aims to replace the Palazzetti (Fumis) room temperature sensor by an electronic simulator.
It allows you to push home automation temperature to the stove.
You can then keep native modulation that reduce power automatically when desired temperature is reached.
Compatibility
It appears that Fumis Controller is used by those brands for their stoves :
- Palazzetti (All)
- Jotul
- TurboFonte
- Godin
- Fonte Flamme
- Invicta
If you have this controller in your stove, it's likely to be compatible.
Build your adapter
All files are inside schematic subfolder and has been designed with KiCad (free and open source)
Schematic
PCB
We produced a small batch of this adapter for test/debugging and our personal use. If you are interested, please PM.
Print your box
Box project (Fusion 360 & STL) can be found into box folder
Code/Compile/Flash
Source code can be compiled using VisualStudioCode/Platformio and flashed onto a D1 Mini
Or
Download latest release in Release section
Connect
⚠️To connect WPalaSensor to your stove, you need to be very carefull about the polarity⚠️.
Here is the polarity of two possible temperature sensors on Fumis motherboard:
Parts
12| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 4.7K | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R1, R2, R3 |
| 2 | 100n | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C1, C3 |
| 1 | 10u | Capacitor_Tantalum_SMD:CP_EIA-3216-18_Kemet-A_Pad1.58x1.35mm_HandSolder | C2 |
| 1 | 2.2K 1% | Resistor_SMD:R_0805_2012Metric_Pad1.20x1.40mm_HandSolder | R4 |
| 1 | DS18B20 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | U1 |
| 1 | Fumis T01 | TerminalBlock:TerminalBlock_bornier-2_P5.08mm | J3 |
| 1 | MCP4725 | Package_TO_SOT_SMD:SOT-23-6_Handsoldering | U2 |
| 1 | WeMos_mini_Hat_Left | wemos_d1_mini:WeMos_D1_mini_Hat_Left | J1 |
| 1 | WeMos_mini_Hat_Right | wemos_d1_mini:WeMos_D1_mini_Hat_Right | J2 |
Questions
How big is the WPalaSensor PCB?
It measures 25.4 × 27 mm and has 2 copper layers, 1.6 mm thick.
What parts does the WPalaSensor use?
12 parts, built around the DS18B20. 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 WPalaSensor KiCad files?
From the Domochip/WPalaSensor repository on GitHub, at the commit this page was made from: the board is schematic/WPalaSensor.kicad_pcb and its schematic schematic/WPalaSensor.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the WPalaSensor design in my own project?
Its repository states no licence, so its author keeps all rights: ask Domochip before reusing the design.
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