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ESP32 CYD Bluetooth OBD-II gauge firmware for the Tech-i tool

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Forked for my own use, pair code 1234, colors changes, custom logo and some extra gauges. works for my cyd 2.8 tft resistive. Online flash tool is for the original not mine. needs screen calibration. touch control are left/right cycle screen and menus, center screen hold for 3 sec opens config/activate in menu.

ESP32-Bluetooth-OBD2-Gauge

This repository has been archived and is no longer maintained. (October 24th, 2025)

A fully functional code-updated Last Update: September 27th, 2024

This is an ESP32 OBD2 Gauge for vehicles that are compatible with OBD2 (Special made for FORD vehicle)

Software:

  • Arduino IDE 2.3.2 + ESP32 arduino core 2.0.17
    • IMPORTANT * this project won't work with ESP32 arduiino core 3.x.x
  • modified TFT_eSPI library 2.5.43

Hardware

Features:

  • Show vehicle data 7 pids
  • MAP - manifold air pressure (PSI)
  • PCM - pcm voltage (volt)
  • ENG LOAD - engine load (%)
  • ENG SPD - engine speed (RPM)
  • Coolant - coolant temperature (c)
  • Oil Temp - engine oil temperature (c)
  • TFT - Ford transmission fluid temperature (c)
  • 8 layout page selectable display
  • DTC read and clear function (Engine warning light only)
  • Warning when parameter reaches setting value
  • Adjustable warning value for each PIDs
  • Configurable CPU overheat protection
  • Configurable gauge Auto turn on/off
  • Auto screen brightness
  • Change off screen to user screen with micro SDcard
  • Firmware updatable (micro SDcard and WiFi)
  • VIN Read on the About page.

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ESP32 CYD Bluetooth OBD-II gauge firmware for the Tech-i tool

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