2 layers65 × 56 mm
2 layers65 × 56 mm
Trappy
mayhem/trappyTrappy, the mobile hippie trap
- Size
- 65 × 56 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 44
- Nets
- 65
- Pads
- 184
- Tracks, vias
- 415, 71
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 12 Apr 2024
- Updated
- 11 Sep 2025
Overview
Trappy is an open-source printed circuit board by mayhem, from the mayhem/trappy repository on GitHub, published under the BSD-2-Clause licence. It is a 2-layer board of 65 × 56 mm with 44 parts on 65 nets, routed with 415 tracks and 71 vias.
It is built around the SN74AHCT125PWRE4. Its parts include 18 connectors, 16 resistors and 4 ICs.
Main components
1README
README.mdtrappy
Trappy, the mobile hippie trap
Parts
44| Qty | Value | Footprint | References |
|---|---|---|---|
| 16 | 330 | Resistor_SMD:R_0805_2012Metric | R1, R2, R3, R4, R5, R6, R7, R8, R9, R10, R11, R12, R13, R14, R15, R16 |
| 4 | RPi_Hat:RPi_Hat_Mounting_Hole | , , , | |
| 4 | SN74AHCT125PWR | Package_SO:TSSOP-14_4.4x5mm_P0.65mm | U1, U2, U3, U4 |
| 1 | LOGO | mayhem:mayhem_logo_tiny | G*** |
| 1 | RPI POWER JMP | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J18 |
| 1 | RPi | Connector_PinHeader_2.54mm:PinHeader_2x20_P2.54mm_Vertical | J2 |
| 1 | STRIP0 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J10 |
| 1 | STRIP1 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | JJ1 |
| 1 | STRIP10 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J12 |
| 1 | STRIP11 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J13 |
| 1 | STRIP12 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J14 |
| 1 | STRIP13 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J15 |
| 1 | STRIP14 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J16 |
| 1 | STRIP15 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J17 |
| 1 | STRIP2 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J3 |
| 1 | STRIP3 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J4 |
| 1 | STRIP4 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J5 |
| 1 | STRIP5 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J6 |
| 1 | STRIP6 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J7 |
| 1 | STRIP7 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J8 |
| 1 | STRIP8 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J9 |
| 1 | STRIP9 | Connector_JST:JST_EH_B3B-EH-A_1x03_P2.50mm_Vertical | J11 |
| 1 | Screw_Terminal_01x02 | TerminalBlock_WAGO:TerminalBlock_WAGO_236-102_1x02_P5.00mm_45Degree | J1 |
Questions
How big is the Trappy PCB?
It measures 65 × 56 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Trappy use?
44 parts, built around the SN74AHCT125PWRE4. 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 Trappy KiCad files?
From the mayhem/trappy repository on GitHub, at the commit this page was made from: the board is hardware/rpi-hat-ws2812/trappy.kicad_pcb and its schematic hardware/rpi-hat-ws2812/trappy.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Trappy design in my own project?
Its repository publishes it under the BSD-2-Clause licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).
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