Electronics Overview
This section covers the custom hardware side of SyrSyn: PCB design, wiring harnesses, embedded firmware, and product-level build documentation.
Active projects
Jeep Grand Cherokee Remote Start Kit — A plug-and-play remote start integration for WJ (1999–2004) Grand Cherokees using the factory key fob. No cutting, no splicing — fully reversible.
Tools and workflow
| Tool | Purpose |
|---|---|
| KiCad 8 | Schematic capture + PCB layout |
| JLCPCB | PCB fabrication + SMT assembly |
| PlatformIO | Firmware development (Arduino + ESP32) |
| FreeCAD | Enclosure design for 3D printing |
Design philosophy
- Reversible first — if a harness goes in, it should come out cleanly
- Documented connectors — every harness is documented with pin assignments and wire gauge
- Tested on hardware — no shipping until it’s run in a real vehicle for at least two weeks