# RS232 to OBD2 Message Format **URL:** \ **Category:** Support\ **Created:** [3 July 2020 07:05 UTC](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948 "2020-07-03T07:05:58Z")\ **Posts on this page:** 4\ **Page:** 2
**Author:** ![claude69103](https://avatars.discourse-cdn.com/v4/letter/c/91b2a8/32.png) [@claude69103](https://forum.core-electronics.com.au/u/claude69103)\ **Post date:** [6 July 2020 14:30 UTC](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948/21 "2020-07-06T14:30:18Z")
“If you connect your arduino directly to an RS232 signal you’ll destroy it - that’s what RS232 to TTL converters are for so you can connect TTL components to RS232 components without letting the smoke out…“ Ohh ok so even if I attach to rx I need to still use my rs232 to tll converter Ok will do The baud rates etc are sane on arduino as the sending device parity, stop bot etc ---
**Author:** ![claude69103](https://avatars.discourse-cdn.com/v4/letter/c/91b2a8/32.png) [@claude69103](https://forum.core-electronics.com.au/u/claude69103)\ **Post date:** [6 July 2020 15:43 UTC](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948/22 "2020-07-06T15:43:56Z")
Great news finally I have it working I have been working on this on and off for months So now the rs232 data outputs as expected connecting it rx and vis the rs323 to tll adaptor Once again I thank all those helping me along the journey Claude Raiola 0414 228 948 ---
**Author:** ![dave50358](https://avatars.discourse-cdn.com/v4/letter/d/e480ec/32.png) [@dave50358](https://forum.core-electronics.com.au/u/dave50358)\ **Post date:** [6 July 2020 23:12 UTC](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948/23 "2020-07-06T23:12:04Z")
Claude, Good to know you finally got sorted. Dave ---
**Author:** ![claude69103](https://avatars.discourse-cdn.com/v4/letter/c/91b2a8/32.png) [@claude69103](https://forum.core-electronics.com.au/u/claude69103)\ **Post date:** [6 July 2020 23:33 UTC](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948/24 "2020-07-06T23:33:27Z")
It’s been a bloody long haul and a hurdle for me to move my project toward poc Re obd2 I can see my wanting to build my own messages to be recognised by an existing display that accepts data may be a bigger challenge so may either go down path of creating own display using obd2/can shield and display shied. Anyway happy to keep you updated with progress if you would like as i walk the path to a poc that can be present for evaluation for commercial product potential development Claude Raiola 0414 228 948 [Previous page](https://forum.core-electronics.com.au/t/rs232-to-obd2-message-format/7948.md?page=1)