![cd-i emulator cd-i emulator](https://cdn.lo4d.com/t/screenshot/800/paragon-cd-rom-emulator-personal.jpg)
I’ve had a lot of problem with spikes and therefore false interrupts on this line.
![cd-i emulator cd-i emulator](https://www.theworldofcdi.com/wp-content/uploads/2019/09/CD-i-emulator-tests.jpg)
They might vary for a quite a lot, a couple of hundred microseconds. CDCEmulator must send ACK on every command.Message start with start sequence (longer high and low pulses) and ‘1’ and ‘0’ is pulse-length-encoded. Each packet is a four byte message, where only one (third) byte is an actual command.The first one is a command, and the last one is like ACK or whatever – always the same. Each radio action (user button press, controls) is sent in two packets.Data is transfere over a single line (no CLK) with 0-5V logic levels.I’ve also written a PulseView data parser, so it was much easier to figure out what is going on. In my case, I found a lot of help on other sites (see below), but at the end still chose to trace communication between CD changer. There are many ways to interpret data, so the best way is to just chose one and stick with it.It sends only a few commands in a respond to user button press or init/deinit request. This is a communication from radio to CDCEmulator. Here I spent most of my time trying to figure out what data to send, so radio thought CD changer is present and therefore enable audio input. This is what all of this project is about. CDCEmulator +BT acts as CD 1, some radio commands are silently ignored or re-maped to my wish. Receive all radio commands (PLAY/MUTE, NEXT/PREV, FFW/FBW, CD selection, Scan MIX).a couple of BC547, BC557, few resistors and electrolytic capacitors (voltage converters and power controls).cheap chinese step down converter (12V -> 5V).
#CD I EMULATOR BLUETOOTH#
cheap chinese Bluetooth module: KCX_BT002.New Bluetooth CD Changer emulator (CDCEmulator):.Previously installed external CD changer: 6-disc VW 1DINCDC (Sony).NOTE: I already had relatively cheap CD changer emulator with USB and AUX, but it didn’t work well and it had no BT.
![cd-i emulator cd-i emulator](https://i.ytimg.com/vi/lTyaed8oBW4/maxresdefault.jpg)
But I want steering wheel controls, handsfree calling and I don’t like power cables and 12V plugs. The most obvious solution to add BT support to car stereo with AUX is simply by buying a cheap BT module, plug it in and voila. Now I have a basic set of playback controls, which also works with steering wheel buttons, and since BT module supports calls, I can also have handsfree calls. For this I sacrifice exernal 6-disc CD changer. I have an operating VW RNS MFD2 with bluetooth connection to my phone. This is going to be a long post, since I will try to fill in the gaps of missing info that I just didn’t find on the web, or was confusing.įor those who are here just to see if it can be done: YES. But, projects just wouldn’t be fun if everything would work out of the box. And you can be sure when I say, that I considered this option several times, in fact, almost every day when something didn’t work. Everybody said: “why don’t you just buy a new radio with bluetooth?”.