[feature] Block (or override) controls of a specific car

[sduponch]

Hi, there is a way to block the controls of a specific car ?
For example by setting his fuel level or speed to zero.

[tkem]

You mean, like disabling the controller? So the car just stands still? I do not think so.

[sduponch]

Yes that this, so i will have to add some electronics to achieve that.

Do you have some info on how the Wireless controllers works (on the rj11 side) ?
I saw that the wireless module has two supplementary wires on the RJ, for i what i think to be serial data.

[tkem]

Frankly, I do not know. The Carrera Wireless protocol itself is proprietary and I'm not aware of any public information on that.

I also haven't found any information on how the multiplexing of controllers is handled on the RJ-11side (which I guess is also how the [speed controller extension](https://www.carrera-toys.com/en/product/20030348-handreglererweiterungsbox works).

I'm only aware of the schematic of a single digital carrera controller [e.g. http://www.wasserstoffe.de/carrera-hacks/parma-regler/index.html] which uses four wires - I guess you already figured that out, though.

So, yes the two additional wires probably are used for multiplexing of multiple controllers through a single RJ-11 connector, but I do not know any details. But I haven't been researching this for quite a while, so if you find some information, please let me know!

[sduponch]

Ok, i will do some reasearch on it soon, maybe next week, and i will share the result with you.

Thank for your work on this lib, what you done is incredibly good. Your android app is far better than the legacy one, keep going !

[Antoni-Czaplicki]

Hi @sduponch, have you managed to go forward with this?

[sduponch]

The two extra wires are indeed to send the controllers states, the unit sends somes bits. Then the wireless module sends data bits separated with a constant timings.

I made a quick video :
https://youtube.com/shorts/eoiZPaqh4LU?si=qUR3lq8WySwyko-F

First bits are for controller ID, then the value of the controller and last for the button