Car trip computer
Small but "powerful" Arduino-based car trip computer, with OLED display. It counts fuel usage, remaining fuel, remaining range, average speed, distance, internal/extarnal temperature and even time for 1/4 mile drag race :) Everything fits into place after original clock. It works on "low-level" signals from injectors, speed sensor, without OBD.
Partially based on concept & code from: https://github.com/xtensa/xarias
Demo:
https://www.youtube.com/watch?v=Hbh-Mv5nM38
MCU:
ATMEGA328p
Fuses:
L:0xff H:0xd7 E:0xfc Lock:0xff
Libraries:
Board: Barebone Atmega328p @ 16MHz (https://github.com/carlosefr/atmega)
ds3231: https://github.com/rodan/ds3231.git commit: c935468
OneWire: https://github.com/PaulStoffregen/OneWire version 2.3.3
DS18b20: https://github.com/milesburton/Arduino-Temperature-Control-Library version 3.7.9
LCD/OLED: https://github.com/mateusz-szafraniec/LiquidCrystal_I2C (my fork of https://github.com/marcoschwartz/LiquidCrystal_I2C)