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Some jiggery with the EasyPIC4 to get a PIC16F688 to talk to the onboard level shifter via its hardware UART.
Date: 04/24/2007
Views: 220
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First draft of the HMLiberator schematic.
Date: 04/25/2007
Views: 184
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Detail of the back side of a female MiniDIN 8 connector as part of the HMLiberator test harness. Fingerprints on the metal barrel give scale.
Date: 04/25/2007
Views: 303
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(Currently) straight-through MiniDIN 8 cable compatible with the cable between the Honda Music Link and an iPod. This will be cut into to handle serial communications.
Date: 04/25/2007
Views: 325
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Cutting into the male to female mini din 8 cable to connect the Honda Music Link and iPod to the HMLiberator development setup.
Date: 04/25/2007
Views: 329
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Completed adapter to connect the Honda Music Link and an iPod to the EasyPIC4 development board. Everything is passed through except serial RX and serial TX. Serial ground will be added later. (I forgot it.)
Date: 04/25/2007
Views: 329
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The EasyPIC4, iPod, Honda Music Link iPod Cable, and serial breakout cable, all connected and ready for testing.
Date: 04/25/2007
Views: 156
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The Honda Music Link connected to a MAX232 (ST232ABN) based level shifter, powered from a USB port. This allows the HML to iPod TX and RX to be sniffed by a PC.
Date: 04/25/2007
Views: 305
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Detail of the underside of the strip board used to make the serial level shifter / Honda Music Link to iPod sniffer.
Date: 04/25/2007
Views: 174
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Detail of the top side of the serial level shifter / Honda Music Link to iPod sniffer.
Date: 04/25/2007
Views: 342
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Detail of the underside of the Honda Music Link showing where CAT5 is used to connect to the TX, RX, and ground pins of the iPod connector.
Date: 04/25/2007
Views: 373
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Looking into my car as it sits in the garage with the laptop, EasyPIC4, Honda Music Link, iPod, sniffer, and cabling connected.
Date: 04/26/2007
Views: 152
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I sat here for about an hour, working on the software for the HMLiberator, eventually making it convince the Honda Music Link to pass audio through. Yes, it works. (Just a little, but it's a start.)
Date: 04/26/2007
Views: 134
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First design of the HMLiberator PCB.
Date: 05/02/2007
Views: 124
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The schematic used for the first layout of the HMLiberator PCB. Note that the voltage regulator has changed from the previous version.
Date: 05/02/2007
Views: 134
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