speeddragon / arduino-carsensordashboard

Arduino - Car Sensor Dashboard

This repository contains C/C++ code to read and display (via Bluetooth) car sensor values. The code was create to get information from:

• Pressure Sender
• Temperature Sender
• MPX4250AP (Pressure sensor)

Diagram

Sender Diagram

This is just a simple voltage divider circuit with a 0.1 uF capacitor and a 10K ohms resistor to help stabilize the signal.

• On the water temperature sender, I used 4.7 k ohms.
• On the oil temperature sender, I used 330 ohms.
• On the oil pressure sender, I used 100 ohms.

This values can change to match the sender resistor range for the values you want more precision.

Sensors

I have bought 3 eBay senders, two temperature sender and one pressure sender.

• 1/8 NPT Oil/Water TEMPERATURE TEMP Sender Sensor fits Autometer VDO Smiths Gauge (hosefittingsuk)
• Oil Pressure Electronic Sensor/Sender Replacement Universal Fit Gauge 1/8" NPT (mcgillmotorsports)
• Aftermarket Gauge Universal 1/8 NPT Oil / Water Temp Temperature Sensor Sender (aggressive_gauges_ltd)

All the calculations with voltage divider and sensor mapping is done in this google drive sheet: https://docs.google.com/spreadsheets/d/1dIEgK2CFQV0UKZFhlpiRPlZvceNms4iL4nMmq7J9Fz0

Installation

• Copy the folders inside folder lib to your arduino libraries.
• Open car_sensor_dashboard.ino inside car_sensor_dashboard folder.

arduino-carsensordashboard's Issues

Circuit diagram link dead

Just been reading through your repo and noticed that (probably owing to changes out of your control), the diagram link is dead.

I'd be interested in seeing it if you have anything still to hand!