Interfacing with VAG Skoda Yeti Quadlock - Printable Version +- BlueWave Studio forum (https://bluewavestudio.io/community) +-- Forum: OpenAuto Pro (https://bluewavestudio.io/community/forum-86.html) +--- Forum: General (https://bluewavestudio.io/community/forum-81.html) +--- Thread: Interfacing with VAG Skoda Yeti Quadlock (/thread-2845.html)

Interfacing with VAG Skoda Yeti Quadlock - ioioioio - 08-02-2021 Hallo, I am building my own system for a Skoda Yeti (2011), currently a Swing radio is installed, I manage to connect the AUX in internally directly on the Quadlock so at least I can get a minijack to play some music with (that is I have connected to the AMI/MDI connector). I am trying to figure out how to get the steering wheel buttons and reverse gear state, the following image from https://pinouts.ru/dev/Skoda/Yeti/ is what I have followed to get the aux in. So I guess I am looking for a pin that should trigger on the reverse and a couple of pins of the resistor ladder from the steering wheel, or maybe all this info is serialized and available as serial data on those Data pins? In that case is there a way to decode it ? tx Simone RE: Interfacing with VAG Skoda Yeti Quadlock - ioioioio - 08-03-2021 Ok so after some night reading I think I figured out that: - there is no reverse/steering wheel/parking sensor dedicated pins, it all goes into the CANBUS - same applies for accesory/ignition states so if I am to sniff the CANBUS this has to on all the time -  I could get the reverse from the back light (cumbersome and would not get me the other stuff) - we are not sure whether an ELM327 would get me the info I need - there is no implementation for parking sensors beeps in AOP - the only safe way to get the info I need is to hack into the CANBUS (doable) Question: what are the AMP and SAFE pins on the Quadlock? so, I have ordered a MCP2515 module, I will try to write some Python code to get the parking sensor data or alternatively use an Arduino and then send the data from arduino to the PI, any idea is welcome. tx Simone RE: Interfacing with VAG Skoda Yeti Quadlock - ioioioio - 08-07-2021 Adding some more info after fiddling around with the car: - facepalm moment: the reverse sensors beeping comes from a separate speaker somewhere in the back not from the radio system so no urgent need to hack in to that - I can confirm there is no ignition/accessory wire coming to the Quadlock - Ignition key block and steering wheel controls they all go into the inners of the car so probably all goes into the CAN Bus - on ODBII with ELM327 there is no info about ignition, lights, reverse etc. Planning: - building a CANBUS sniffer with Arduino and see what I can get from there, unfortunately using this to toggle the radio on and off will keep the arduino and CANBUS module always on which could potetially drain the battery - hack somewhere into the car where I can get a voltage after inserting and turning the key, I am sure in the fuse box I can get 12v popping up at key contact somehow, given that I can have a basic installation while waiting to get the CAN BUS working S. RE: Interfacing with VAG Skoda Yeti Quadlock - GSPW - 08-08-2021 Thanks for sharing your progress, I wish I could help you. Best of luck to you! RE: Interfacing with VAG Skoda Yeti Quadlock - ioioioio - 08-08-2021 Update: - got a key switch 12v signal from the fuses box, that now triggers a relay which passes the main 12v to the RPI, shutdown is still hard if not done in the interface first - I printed a little palstic frame to hold the RPI and display in the glove compartment, it will stay there until I get all the rest of the components and some kind of casing at least I got started now S. RE: Interfacing with VAG Skoda Yeti Quadlock - ioioioio - 08-15-2021 Some advances: - I removed the relay for the ignition trigger with an photo coupler using the following circuit, IC used is a PC817 - I tapped the light on signal from the vag light rotary switch, the following pin out is what I have followed, the signal is fed into another pho coupler then into the GPIO. Not really a clean solution but since I expect to remove it when I ll be able to get Can Bus this is not a permanent installation 8 & 9 = Constant in off position (DRL/TFL) 8 & 3 = Parking 8 & 1 = On 8 & 5 = Fog Ft. 8 & 7 = Fog Rear - I am using the 3 relays system so I have installed this script https://github.com/soubhik-khan/RPI_delayed_Shutdown and added just a GPIO pin high on boot so I get the 3rd relay activating - I am also using a delayed relay type connected to the ignition signal so I can avoid to get power on/off/on at ignition, such as this one: https://es.aliexpress.com/item/1005001854101279.html