Some basic setup questions

[powerbroker2]

Some basic setup questions

[patfelst]

sorry to hijack this issue, but did you see on the ELM front page, they are shutting down in 2 years. Not that it really impacts this library as there are so many ELM clones out there.

Having to live with, and make adjustments for Covid-19 has reminded us of a great many things, however. Foremost is that life is very precious and our time here is very limited. For this reason, we have decided to wind down our business, and close it effective June 2022.

Personally I'm using the OBD Link MX which has a STN1100 chip, which uses a hybrid of the ELM "AT" commands, but also enhanced "ST" commands and I'm modifying your library to add a few of the ST commands.

[da40flyer]

I went into the sketch and simply changed it to: Serial.begin(38400); and it now stays connected.
Thank you for creating/sharing this library!

[PowerBroker2]

I've only communicated with ELM327 modules wirelessly, so I don't know much about the physical wiring aspect. Although you seem to have gotten things to work (at least mostly), I'm very much interested in seeing pictures of what pads correspond to the ELM327's TX, RX and GND signals.

As for the baud, I honestly can't remember if my ELM327 happened to have a default baud of 115200 or if I used AT commands to change the baud from 38400.

Curious, did you have to edit any of the example sketch or the lib to get RPM readouts?

Lastly, the timeout error does occur from time to time with one of my personal projects (power cycling fixes it), but I've never been able to make heads or tails of why it happens. It's possible that using a baud of 115200 might introduce some comm errors. If you're experiencing timeout errors more than you care to deal with, try using AT commands to switch to a lower baud (more here).

[da40flyer]

I am having the same issue. After the rpm values scroll for a short time, it goes to an endless TimeOut Error. I have not edited the sketch or the library at all. I am using a VEEPEAK wifi adapter talking to an esp32 board.
Suggestions?

[PowerBroker2]

You might be able to jog the module back to life it if you send a string of a few carriage returns and/or call the myELM.begin() method again.

[PowerBroker2]

@cmanger2020 , due to lack of response I assume you have things working without further questions. I'm going to close the issue for now, but if you need more clarification feel free to reopen.

[siwar-w]

I can't find tx and rx on my elm327 v1.5 any help please