Author: Jeroen Meijer

Geek talk: ISO-TP and ELM327 dongles

Micro introduction: A CANbus, which is used to connect all computers in the car, can only carry chunks of 8 bytes plus an ID, called frames. All data used to actually operate the car, such as switch positions, speed, and

TPMS IDs can now be read and written

In the next release, which we will try to push out really soon, the Tyres screen has been augmented with a section where you can read the IDs of your TPMS valves and write them back. So, if you have

DIY dongle build and documentation

While heavily a Work in Progress, Bob has started to put together some decent documentation on the dongle. It’s in the development branch of the firmware on gitlab, look here for odt and pdf versions. Have a peek and maybe

Dongle build: from breadboard to veroboard

Here is an example on how I build my dongle prototype. Note that this is not fitted in a real dongle case. It’s slightly too big for it and at the moment this my only ESP32 board and I want

Dongle firmware

The software consists of a few functional parts. First, there is the CANbus library. While the ESP32 is around for a while now and there is good CAN support in Espressif’s IDF, the support in the Arduino environment is mediocre

Dongle testing (more geek talk)

You might want to have a peek at this “Frankenstein contraption” testing rig. Things have moved on since (more on that in a later post), but this is how projects like this start. Note that I laid it out neatly

A DIY CanZE dongle, part 2. Geek talk.

We might have ironed out most issues with the DIY dongle. If there are people willing to build an ESP32 based dongle, especially if they own a Q90, R90, or R110 model, we would like to hear about it. Requirements

Climate computer loosing it’s mind revisited!

Remember this post? Well today SpeakEV user StinkyPete posted a detailed sequence of events how to trigger it and what firmware version has it fixed. I will repeat here only his short version. Set the car to pre-condition at a

A DIY CanZE dongle

The KonnWEI dongles are, though the most stable in terms of what you get when you buy, not the best to run CanZE with, especially when fast performance is required. Think like the Driving, Braking and Consumption screens. For the

Defective key card – again

This is a re-post of what I wrote on SpeakEV a few days back. The battery in my key card had failed. Note that in the “non-keyless” version, the car does not warn you about that. I removed the mechanical