![]() ![]() To get my tab's single ended outputs to play nice with the differential signals the BMW expects, I used two TDA7052 buffers, one for the right and one for the left, since I couldn't find anyone who still sells the 2 channel version. This requires two wires for every channel but can totally eliminate common mode distortion. I hooked that up to an MCP2004 LIN bus transciever which you all know allows the 2 wire UART to talk to a single wire iBus.īMW used to use differential signals for the audio. Most importantly for this project was the UART. Which BMW cars use iBUS/KBUS BMW 3-series E46 (1998-2007) BMW 5. Some BMWs (like E46) are not equipped with IBUS, but they have KBUS, which is white wire with red stripe and yellow dots, so on E46, please connect the yellow wire of our interface to KBUS. The IOIO firmware gives you access to all the cool features of a PIC24 MCU. modBMW modLight2, IBUS interface, modBMW WIFI ENET 0 If you are intereted of BMW F/G/I-series diagnostics, coding, tuning and re-programming, you are welcome to take a look onto our modBMW WIFI ENET adapter, compatible with all of the modern software applications available for these cars. IBUS is always a white wire with grey stripe and yellow dots. Since an IOIO can program an IOIO, that is my firmware download mechanism. I used the same microcontroller and gave myself access to the same programming pins that exist on the IOIO. As you may have already learned from the videos, this device is based on a (currently obsolete) version of the Sparkfun IOIO. ![]()
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