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Sebastian Nieto 88503b0313 feat: lower volume curve (duty=2 min) and add non-blocking Casio double-chirp alarm sound		2026-09-09 23:42:19 -03:00
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OBD2 Gauge (ESP32 Bluetooth)

This repository has been archived and is no longer maintained.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)

Prototype https://youtu.be/PkQaUJbzTNM
Current Model Short Demo https://youtu.be/vvBIeim7XTE

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

ESP32 TFT2.8 320x240 with "RESISTIVE" touch board. buy here https://s.click.aliexpress.com/e/_Ew95gMl
ELM327 Bluetooth adaptor (recommended v1.5 not v2.1) Highly recommend ELM327 Bluetooth adaptor https://s.click.aliexpress.com/e/_oo3THvG
A small speaker for mobile phone 1 Watt 8 ohm 9x28 mmm.
A push button 6x6x5 2 legs
3d print enclosure
12v to 5v dc micro usb power regulator module
Gauge magnetic stand

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.

Emulador OBD2 / ELM327 Bluetooth incluido

En la carpeta se incluye el script para emular un adaptador ELM327 v1.5 y la ECU del vehículo vía Bluetooth SPP en Linux. Permite probar y validar la pantalla CYD en banco de pruebas sin necesidad de conectarse a un auto real. Consulta emulator/README.md para ver requisitos y modo de uso.

README.md