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That's exactly what I'm going to use this for, too. Right now I have an original Pi B logging GPS and OBD data, but it's crammed into a small storage spot in th
by el_benhameen 11y ago
That's exactly what I'm going to use this for, too. Right now I have an original Pi B logging GPS and OBD data, but it's crammed into a small storage spot in the car and is a big waste of space. I'm super excited to be able to cut my project to less than half its original size. I don't need ethernet (other than for debugging), four usb ports, etc. etc. I think this is going to be fantastic for creating homemade embedded devices.
- dakotasmith 11y agoDo you have or did you follow a write up for this? I know I would be interested in reading how you set that up!
- el_benhameen 11y agoI don't right now, unfortunately, but a writeup is next on my list of projects after the carputer is complete. I'll post it here if there's interest. For learning about the OBD protocol, though, these resources have been very helpful: The ELM 327 data sheet (this is the chip in most OBD devices you'll find on amazon): http://elmelectronics.com/DSheets/ELM327DS.pdf http://elmelectronics.com/DSheets/ELM327DS.pdf Wikipedia's article on OBD PIDs: https://en.wikipedia.org/wiki/OBD-II_PIDs https://en.wikipedia.org/wiki/OBD-II_PIDs "A complete guide to hacking your vehicle bus on the cheap & easy": https://theksmith.com/software/hack-vehicle-bus-cheap-easy-part-1/ https://theksmith.com/software/hack-vehicle-bus-cheap-easy-p... There's a PyOBD python module out there (my carputer is built in python), but it's a fairly simple process so I just rolled by own using pyserial.