Honda Motorcycle Dash

NOTE: This is a 'Alpha' and a work in progress

What is this?

This is my attempt to build an information display / dashboard replacement (or additon) for modern Honda motorcycles. It connects to the bike via its diagnostic port and reads information directly from the ECU

It also contains a GPS module and support for an ambient temperature / humidity sensor

Hardware

The below hardware is used in the current design. For further information see the hardware section of the wiki

Espressif ESP32 (Node32S for development, ESP32WROOM for build)
2.8" ILI9341 based SPI TFT Display
DHT22 Temperature/Humidity Sensor
Serial GPS Module
L9637D Monolithic bus driver with ISO 9141 interface

Eagle CAD files for the hardware are available in the pcb folder, and designs for 3D printing a housing are available in the case folder

Software & Features

The code is written for the ESP32 in C\C++ and is designed to be built with PlatformIO

On startup the device connects to the bike's ECU and displays the following information

Engine Temperature
Engine RPM
Battery Voltage
Throttle Position %
Intake Air Temperature C
Neutral Switch
Side Stand Switch
Bike Speed

It also displays the following information from other sensors

GPS Speed (GPS)
Ambient Temperature (DHT22)

The below features are intended to be available in the future

Gear Position (Based on Speed + RPM) (ECU)
Heading (North, South, East, West, etc) (GPS)
Ambient Humidity (DHT22)
Smartphone Notifications (ESP32 BLE)
Smartphone "Now Playing" (ESP32 BLE)

For further information, see the software section of the wiki section of the wiki

Special Thanks To

This project would not be possible without the below information and open source code

Working with Honda ECU's

Aster94's KWP2000 Library - https://github.com/aster94/Keyword-Protocol-2000
Gonzo's CTX-OBD Project - https://gonzos.net/projects/ctx-obd/
PGMFI Formus - http://forum.pgmfi.org/

Arduino Libraries and Tools

Adafruit's GFX/DHT/ILI9341/BusIO Libraries - https://learn.adafruit.com/adafruit-gfx-graphics-library/overview
Mikalhart's TinyGPS++ - https://github.com/mikalhart/TinyGPSPlus
Javl's image2cpp - https://javl.github.io/image2cpp/
Ropg's truetype2gfx - https://rop.nl/truetype2gfx/

Disclaimer

This code is provided under the GNU GPLv3 and includes NO WARRANTY.

The authors accept NO LIABILITY for damages or destruction to any property or persons through the use of this software or hardware design.