2 layers83.3 × 65.3 mm
SimonShield
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46 parts14kMIT
2 layers32.7 × 52.7 mm
P1-interface
halacs/p1-interface1PCB design to integrate utility meters with P1 interface to home automation systems.
- Size
- 32.7 × 52.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 9
- Nets
- 35
- Pads
- 57
- Tracks, vias
- 81, 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 6 Mar 2024
- Updated
- 25 Jul 2025
Overview
P1-interface is an open-source printed circuit board by halacs, from the halacs/p1-interface repository on GitHub. It is a 2-layer board of 32.7 × 52.7 mm with 9 parts on 35 nets, routed with 81 tracks and 2 vias.
It is built around the BC547. Its parts include 3 resistors, 2 connectors, 1 capacitor, 1 IC and 1 diode. It belongs with the home automation and IoT and interfaces and adapters boards of this library.
Main components
1README
README.mdParts
9| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | 1K | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R2, R3 |
| 1 | 10K | Resistor_THT:R_Axial_DIN0411_L9.9mm_D3.6mm_P12.70mm_Horizontal | R1 |
| 1 | 1N5819 | Diode_THT:D_DO-41_SOD81_P10.16mm_Horizontal | D1 |
| 1 | BC547 | Package_TO_SOT_THT:TO-92_Inline | Q1 |
| 1 | C | Capacitor_THT:CP_Radial_Tantal_D10.5mm_P2.50mm | C1 |
| 1 | I2C | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J2 |
| 1 | RJ12 | Connector_RJ:RJ25_Wayconn_MJEA-660X1_Horizontal | J1 |
| 1 | ~ | MyLibrary:wemos s3 mini | U1 |
Questions
How big is the P1-interface PCB?
It measures 32.7 × 52.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the P1-interface use?
9 parts, built around the BC547. 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 P1-interface KiCad files?
From the halacs/p1-interface repository on GitHub, at the commit this page was made from: the board is P1.kicad_pcb and its schematic P1.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the P1-interface design in my own project?
Its repository states no licence, so its author keeps all rights: ask halacs before reusing the design.
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