2 layers61.6 × 36.8 mm
2 layers61.6 × 36.8 mm
Thermostat
cswank/thermostat- Size
- 61.6 × 36.8 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 26
- Nets
- 49
- Pads
- 108
- Tracks, vias
- 189, 5
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 3 Oct 2023
- Updated
- 25 Oct 2026
Overview
Thermostat is an open-source printed circuit board by cswank, from the cswank/thermostat repository on GitHub, published under the MIT licence. It is a 2-layer board of 61.6 × 36.8 mm with 26 parts on 49 nets, routed with 189 tracks and 5 vias.
It is built around the DS18B20, AQH2213 and MMBT3904. Its parts include 11 resistors, 5 switches, 2 ICs, 2 transistors and 2 connectors. It belongs with the home automation and IoT boards of this library.
Main components
3
DS18B20
TO-92-55℃~+125℃ 12bit 3V~5.5V 750ms Single-bus ±0.4℃ TO-92 Temperature Sensors ROHSUMWTemperature Sensors
AQH2213
DIP-80V~600V 1 Form A (SPST-NO) 1.3V 600V 900mA AC Yes DIP-8 Solid State Relays (Triac Output) ROHSPanasonicSolid State Relays (Triac Output)
MMBT3904
SOT-23-55℃~+150℃ 1 NPN 100 100nA 200mA 200mW 300MHz 300mV 40V 6V NPN SOT-23 Bipolar (BJT) ROHSJiangsu Changjing Electronics Technology (CJ)Bipolar (BJT)
Parts
26| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_Pad | MountingHole:MountingHole_2.2mm_M2_DIN965_Pad | H1, H2, H3, H4 |
| 3 | 10K | Resistor_SMD:R_0805_2012Metric | R2, R3, R4 |
| 3 | 1K | Resistor_SMD:R_0805_2012Metric | R5, R6, R7 |
| 2 | 180 | Resistor_SMD:R_0805_2012Metric | R8, R9 |
| 2 | 2.2k | Resistor_SMD:R_0805_2012Metric | R11, R12 |
| 2 | AQH2213 | thermostat:SSR_AQH2213 | K1, K2 |
| 2 | MMBT3904 | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | 4.7K | Resistor_SMD:R_0805_2012Metric | R1 |
| 1 | DS18B20 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | U2 |
| 1 | Fn | Button_Switch_THT:SW_PUSH_6mm | SW2 |
| 1 | Furnace 24VAC | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | Minus | Button_Switch_THT:SW_PUSH_6mm | SW1 |
| 1 | Plus | Button_Switch_THT:SW_PUSH_6mm | SW3 |
| 1 | Raspberry_Pi_2_3 | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J1 |
| 1 | ~ | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | U1 |
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Questions
How big is the Thermostat PCB?
It measures 61.6 × 36.8 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Thermostat use?
26 parts, built around the DS18B20, AQH2213 and MMBT3904. 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 Thermostat KiCad files?
From the cswank/thermostat repository on GitHub, at the commit this page was made from: the board is cad/pcb/v3/thermostat/thermostat.kicad_pcb and its schematic cad/pcb/v1/kicad.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Thermostat design in my own project?
Its repository publishes it under the MIT licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).