4 layers100 × 80 mm
2 layers65 × 100 mm
High volt switch
minmos/terrasense- Size
- 65 × 100 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 19
- Nets
- 16
- Pads
- 59
- Tracks, vias
- 75, 2
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 2 Jun 2026
- Updated
- 7 Jun 2026
Overview
High volt switch is an open-source printed circuit board by minmos, from the minmos/terrasense repository on GitHub. It is a 2-layer board of 65 × 100 mm with 19 parts on 16 nets, routed with 75 tracks and 2 vias.
Its parts include 7 connectors, 4 switches, 3 diodes and 1 fuse.
README
README.mdQuick Overview
firmware: contains the esp-idf firmware running on the esp32c6cad: contains the CAD files for the case housing the sockets, the 12V PSU, the relais/hv pcb, and an extension for that box housing the main pcbpcb: contains the KiCad files for the relais/hv pcb as well as the main pcb
DEMO
Here is a quick demo video of our Terrasense implementation in action:
https://github.com/user-attachments/assets/7964f494-83c7-4bb1-9dd9-c3dd94d3becd
Parts
19| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | M7 | PCM_Diode_SMD_AKL:D_SMA | D1, D2, D3 |
| 3 | SANYOU_SRD_Form_C | Relay_THT:Relay_SPDT_SANYOU_SRD_Series_Form_C | K0, K1, K2 |
| 1 | Fuse | Fuse:Fuseholder_Cylinder-5x20mm_Schurter_0031_8201_Horizontal_Open | F1 |
| 1 | G3MB-202P DC12 | footprints_g3mb:G3MB-202P DC5_OMR | K3 |
| 1 | Input Switches | Connector_JST:JST_XH_B5B-XH-A_1x05_P2.50mm_Vertical | J2 |
| 1 | InputTerminal | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J3 |
| 1 | TerminalRelay0 | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J1 |
| 1 | TerminalRelay1 | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J4 |
| 1 | TerminalRelay2 | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J5 |
| 1 | TerminalRelay3 | TerminalBlock_Altech:Altech_AK100_1x04_P5.00mm | J6 |
| 1 | ThermalFuse | TerminalBlock_Altech:Altech_AK100_1x02_P5.00mm | J7 |
The 15 most common of 19 parts.
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Questions
How big is the High volt switch PCB?
It measures 65 × 100 mm and has 2 copper layers, 1.6 mm thick.
What parts does the High volt switch use?
19 parts. 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 High volt switch KiCad files?
From the minmos/terrasense repository on GitHub, at the commit this page was made from: the board is pcb/relay_breakout_board/high_volt_switch/high_volt_switch.kicad_pcb and its schematic pcb/main_pcb/terrasense/fan.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the High volt switch design in my own project?
Its repository states no licence, so its author keeps all rights: ask minmos before reusing the design.