Building a Simple Car Monitoring Setup Looking for Suggest

[Danieldsouza]

Hi everyone,

I’ve been experimenting with a small DIY setup for my car and wanted to get some advice from people who’ve done similar projects.

I’m trying to build a basic in-car electronics system that can monitor a few things like air quality, temperature, and possibly battery voltage. The idea is to use a compact board (something like a microcontroller or single-board computer) and a few sensors, then log the data or maybe display it on a small screen.

A few challenges I’m currently facing:

• Powering the setup safely from the car without draining the battery when the engine is off
• Handling voltage fluctuations (especially during ignition)
• Choosing sensors that are reliable in a car environment (heat, dust, vibration)
• Whether it’s better to go with a simple microcontroller or something more powerful for future expansion

I’m not looking to build anything too complex right now, just something stable and safe that I can expand later.

Has anyone here built something similar or integrated custom electronics into their car? Would really appreciate any guidance, especially around power management and long-term reliability.

Thanks!