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Re: Please help me splice iPod into changer cable (1994 Posted by Gene N [Email] (#1094) [Profile/Gallery] (more from Gene N) on Fri, 30 May 2008 08:45:16 In Reply to: Please help me splice iPod into changer cable (1994), Mike Johnson, Fri, 30 May 2008 05:14:47 Members do not see ads below this line. - Help Keep This Site Online - Signup |
The Clarion radio uses a bi-directional serial communication bus to communicate with with the changer. The radio sends requests to the changer like "are you there", "track forward", "track backward", "play", "pause", and so on, and the changer sends back responses, like "I'm here", "magazine size", "CD in slot", and others.
An intelligent adapter would convert those commands from the radio into IPod commands. Even a dumb adapter would require a minimal set of responses it would have send back to the radio in order to fool the radio into thinking that there was changer on the end of the cable. Return responses, like "I'm here" and "acknowledgment" of last command, come to mind.
If you really want to do this, you would want to set up a radio and changer on a work bench with a serial data capture device, exercise the the changer, capture the commands, then decode them. You could use a single chip microprocessor to create a command decoder that went between the IPod and the radio.
As a personal learning project, this would be a fantastic experience. As a commercial venture for sale, you have to balance the engineering and production costs for a system that works with a 10 year old (or more) radio versus the cost of buying a new radio with an IPod interface built in.
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