Ivor Wanders

Hmm, looks like you're on the right track, things are coming back now. In `initKWPSlow` we actually disable the `v1 == v2` check [here](https://github.com/iwanders/OBD9141/blob/ff2d79538ec177c54da349f5d06b86f6b3bfd524/src/OBD9141.cpp#L458), since you get a `v2` of...

Well, if the program suddenly stops if you put a print statement somewhere... I think there are other problems in your program / setup. Not much I can do to...

> OBD9141println("") added in OBD9141.begin and OBD9141.set_port add some delay What happens if you replace that with a `delay(10)` or something? It sounds like a timing issue to me, not...

The simulator is a bit flaky and more a development tool really. I recommend testing on an actual ECU / car. Start with the [reader](https://github.com/iwanders/OBD9141/blob/master/examples/reader/reader.ino) example. Use the circuit from...

Ah, well, ehm, I haven't touched an Arduino in years. But I recall because the UNO only has one serial port you need a library to provide a software serial...

Library is agnostic to the transceiver chip, it only uses digital signals on `Tx` and `Rx`, just make sure to set the wake pin appropriately, just glancing at the first...

> if there is any how to video or pictures how to make the connection between Teensy 3 and the MC33290, SN65HVDA100 and SN65HVDA195 and the plug of my car?...

> for me, who don't know it, I find it difficult to understand the circuit. > I will start the process if I need anything I hope to have the...

Start by toggling on the debug printing [here](https://github.com/iwanders/OBD9141/blob/ff2d79538ec177c54da349f5d06b86f6b3bfd524/src/OBD9141.h#L11). If possible and you have the hardware, attach a logic analyzer, compare with another OBD reader.

No, you're getting a timeout; [this line](https://github.com/iwanders/OBD9141/blob/ff2d79538ec177c54da349f5d06b86f6b3bfd524/src/OBD9141.cpp#L383) returns false. Are you sure this is the correct initialisation procedure for this ECU? Does it need the 5 baud init or KWP?...