SMART GAUGEOBD2 PERFORMANCE DISPLAY
TH EN
REAL-TIME OBD2 DISPLAY

See every pulse
of your engine

Smart Gauge turns an ESP32 CYD into a customizable vehicle display. Connect an ELM327 over Bluetooth for fast, readable live data.

Install firmware ↗ Explore features
30+ supported values* 2 dashboard styles 15 min free trial
ELM327 adapter
elm327-adapter.webp

ELM327: Tested only with adapters reporting v1.5 and v2.1. Other versions have not yet been tested.

Smart Gauge product image
assets/images/hero-obd2-display.webp
RPMSPEEDCOOLANTFUELDTCTRIP
THE COCKPIT, YOUR WAY

Essential data
where you can see it

Designed for real driving with clear numbers, visible alerts, and configurable dashboard tiles.

01

Two dashboard styles

Choose the classic four-tile layout or a clean twin-gauge view focused on speed and RPM.

Classic dashboard
dashboard-classic.webp
Clean twin dashboard
dashboard-clean-twin.webp
02
⌁

Real OBD2 data

Read RPM, speed, coolant temperature, voltage, engine load, and the PIDs supported by the vehicle.

03
!

Driving alerts

Get low-voltage, high-coolant-temperature, and configurable threshold alerts.

04
⌁

History graphs

Review speed and RPM graphs recorded since startup and pan through earlier data.

05
⚠

DTC diagnostics

Read trouble codes with descriptions and clear standard ECU codes through a safety confirmation flow.

TESTED ON ROAD / REAL VEHICLE DATA
BUILT FROM REAL DRIVING

More than
good looks

Developed through real-vehicle testing, with smooth display updates, automatic connection, trip tracking, and fuel-consumption calculations.

  • Automatic ELM327 Bluetooth connection
  • Multi-vehicle support through standard OBD-II
  • PID scan with vehicle-supported values only
  • Read and clear standard diagnostic trouble codes
See all features →
READY TO START?

Turn your CYD into
a Smart Gauge today

Install firmware from the web or check for updates directly on the device.

Open firmware installer