Open Source · ESP32 Powered

Wireless Carb Sync
for Any Phone

An open-source carburetor synchronization tool that displays live readings on your phone. No app download. No internet. No long hoses.

See It In Action ↓
Setup

Three steps. No app store.

01
Power on
Flip the switch. The tool creates its own WiFi network — no internet needed.
02
Connect to WiFi
Join the CarbSync network from your phone's WiFi settings.
03
Open your browser
Go to 192.168.4.1 and you're looking at live gauges.
Optional: Add it to your home screen for an app-like experience. iPhone: Share → Add to Home Screen. Android: Menu → Install App. It'll sit next to your other apps and open full-screen.
Interactive Demo

This is what your phone sees

Live-updating simulated data. On the real tool, these numbers come from sensors mounted at each carburetor.

Carb Sync
78%
Out of sync
Spread: 3.20 kPa
Carb 1
--kPa
Carb 2
--kPa
Carb 3
--kPa
Carb 4
--kPa
Target 25.0 kPa

Try the buttons — watch the gauges respond in real time

Specifications

Built for the garage

~$130
Total build cost
±0.5
kPa sync accuracy
5x/sec
Display refresh rate
20+ hr
Battery life (2×18650)
2-4
Cylinder support
30 ft
Wireless range
Why this exists

vs. commercial tools

Tool Price Any Phone Wireless Data Log
Digi Sync 4ch $180-195 No No No
Motion Pro $95-115 No No No
Carbtune Pro $120-180 No No No
Carb Sync Tool ~$130 Yes Yes Yes
Project Status

Build your own

✓ Complete
Firmware
ESP32 firmware with corrected sensor math, oversampling, ADC calibration, and LittleFS-served web app.
✓ Complete
Web Interface
PWA with live gauges, sync detection, session logging, CSV export. Served directly from the ESP32.
In Progress
Hardware Build
Parts ordered. Assembly guide coming soon.
Planned
Open Source Release
Full build guide, schematics, firmware, and web app source on GitHub.