2 layers15.3 × 19.3 mm
Kicad hx711 tyny85
IvDm/Z-probe-on-smd-resistors-2512
Auto bed level strain gage for 3D printer using resistors 2512 instead of strain gauges.
18 parts150GPL-3.0
2 layers31.9 × 27.4 mm
Keychain thermometer
clovisf/Keychain-thermometer- Size
- 31.9 × 27.4 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 18
- Nets
- 12
- Pads
- 49
- Tracks, vias
- 98, 10
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 15 Oct 2024
- Updated
- 3 May 2026
Overview
Keychain thermometer is an open-source printed circuit board by clovisf, from the clovisf/Keychain-thermometer repository on GitHub. It is a 2-layer board of 31.9 × 27.4 mm with 18 parts on 12 nets, routed with 98 tracks and 10 vias.
It is built around the ATTINY85V-10SU. Its parts include 7 resistors, 6 diodes, 1 capacitor, 1 IC and 1 connector. It belongs with the sensors and measurement boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
1Parts
18| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | LED | LED_SMD:LED_0805_2012Metric | D1, D2, D3, D4, D5, D6 |
| 4 | 10k | Resistor_SMD:R_0805_2012Metric | R1, R5, R6, TH1 |
| 3 | 1k | Resistor_SMD:R_0805_2012Metric | R2, R3, R4 |
| 1 | 100n | Capacitor_SMD:C_0805_2012Metric | C1 |
| 1 | ATtiny85V-10S | Package_SO:SOIC-8W_5.3x5.3mm_P1.27mm | U1 |
| 1 | Battery_Cell | Battery:BatteryHolder_Multicomp_BC-2001_1x2032 | BT1 |
| 1 | Conn_01x06_Pin | Connector_PinHeader_2.54mm:PinHeader_1x06_P2.54mm_Vertical | J1 |
| 1 | SW_Push_Dual | Button_Switch_SMD:SW_SPST_PTS810 | SW1 |
Questions
How big is the Keychain thermometer PCB?
It measures 31.9 × 27.4 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Keychain thermometer use?
18 parts, built around the ATTINY85V-10SU. 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 Keychain thermometer KiCad files?
From the clovisf/Keychain-thermometer repository on GitHub, at the commit this page was made from: the board is keychain-thermometer.kicad_pcb and its schematic keychain-thermometer.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Keychain thermometer design in my own project?
Its repository states no licence, so its author keeps all rights: ask clovisf before reusing the design.
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