2 layers189.5 × 204.9 mm
SmartSpin2k Panelized
doudar/SmartSpin2k
Transform your spin bike into a Smart Trainer!
749 parts292GPL-2.0
2 layers52.5 × 55.5 mm
Troxler interface pcb
zhuffman93/troxler-gauge-interfacePico W based interface for Troxler gauges
- Size
- 52.5 × 55.5 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 70
- Pads
- 155
- Tracks, vias
- 75, 3
- Pours
- 2
- Routed
- Yes
- KiCad
- KiCad 10.0 (file 20260206)
- Created
- 1 Jul 2026
- Updated
- 13 Aug 2026
Overview
Troxler interface pcb is an open-source printed circuit board by zhuffman93, from the zhuffman93/troxler-gauge-interface repository on GitHub. It is a 2-layer board of 52.5 × 55.5 mm with 13 parts on 70 nets, routed with 75 tracks and 3 vias.
It is built around the MAX3232ID. Its parts include 5 capacitors, 2 connectors and 1 IC. It belongs with the interfaces and adapters boards and the RP2040 boards of this library.
Main components
1README
hardware/README.mdHardware (KiCad)
KiCad 10 project for the interface board.
Board v2 (current)
- 52.5 x 55.5 mm, 2 copper layers, 1.6 mm thick
- Raspberry Pi Pico W soldered on its castellated edge pads. The USB port overhangs the right edge by 1.35 mm. The antenna sits at the left edge inside a copper keepout.
- MAX3232 (SOIC-16) and five 0603 capacitors mount on the bottom face.
- Winford CNR25M (DB25 male, gauge side) and CNR9F (DB9 female, printer side). Both are right-angle parts with plated board-lock holes. Solder the locks for strength.
- Four M3 mounting holes (H1 to H4). The enclosure screws pass through these holes.
- The board gets power from the Pico USB port only.
Board v1 (62 x 72 mm) is preserved at the git tag pcb-v1.
Fabrication outputs
The repository ignores hardware/fab/. Regenerate the Gerber and drill files from the board file:
kicad-cli pcb export gerbers --output fab/ --layers "F.Cu,B.Cu,F.Mask,B.Mask,F.Silkscreen,B.Silkscreen,F.Paste,B.Paste,Edge.Cuts" troxler-interface-pcb.kicad_pcb
kicad-cli pcb export drill --output fab/ --format excellon --drill-origin absolute --excellon-units mm troxler-interface-pcb.kicad_pcbOrder settings: 2 layers, 1.6 mm, 1 oz copper. HASL works. ENIG gives a flatter finish for the SOIC pins and the Pico castellations.
Datasheets
datasheets/ holds the Winford CNR connector drawing and the D-sub panel cutout drawing.
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 4 | MountingHole_3.2mm_M3 | MountingHole:MountingHole_3.2mm_M3 | H1, H2, H3, H4 |
| 3 | 100nF | Capacitor_SMD:C_0603_1608Metric | C3, C4, C5 |
| 2 | 100nf | Capacitor_SMD:C_0603_1608Metric | C1, C2 |
| 1 | DB25_Pins | Connector_Dsub:DSUB-25_Pins_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J1 |
| 1 | DE9_Socket | Connector_Dsub:DSUB-9_Socket_Horizontal_P2.77x2.84mm_EdgePinOffset9.40mm | J2 |
| 1 | MAX3232 | Package_SO:SOIC-16_3.9x9.9mm_P1.27mm | U1 |
| 1 | RaspberryPi_Pico_W | Module:RaspberryPi_Pico_W_SMD_HandSolder | A1 |
Similar boards
- 2 layers193 × 113 mm
- 2 layers81.6 × 44.5 mm
ELTerm
zephray/ELTerm
ANSI/VT100-compatible serial terminal built with Raspberry Pi Pico and EL640.480-AM/AG screen
31 parts92MIT - 2 layers87 × 71 mm
- 2 layers100 × 93 mm
Speeduino base
Tjeerdie/SPECTRE
Speeduino compatible engine control unit (ECU) based around black STM32F407VET6 board.
213 parts59GPL-3.0 - 2 layers33.1 × 43.8 mm
ThrottleBlaster
scrapcomputing/ThrottleBlaster
A Turbo circuit with a MHz display that can slow down the CPU speed
34 parts57GPL-2.0 - 2 layers127.3 × 54.1 mm
ESP32 SolarBox
cole8888/SRNE-Solar-Charge-Controller-Monitor
Read data from SRNE solar charge controllers.
34 parts42 - 4 layers98.8 × 85.1 mm
Questions
How big is the Troxler interface pcb PCB?
It measures 52.5 × 55.5 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Troxler interface pcb use?
13 parts, built around the MAX3232ID. 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 Troxler interface pcb KiCad files?
From the zhuffman93/troxler-gauge-interface repository on GitHub, at the commit this page was made from: the board is hardware/troxler-interface-pcb.kicad_pcb and its schematic hardware/troxler-interface-pcb.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Troxler interface pcb design in my own project?
Its repository states no licence, so its author keeps all rights: ask zhuffman93 before reusing the design.