The new wireless intercom allows a media input channel via bluetooth.
The radio is intended to be useful but also: too boring to nick and have minimum of openings/semi weatherproof. The quickest way of adding a bluetooth output appears to be modding it slightly.
Around a fiver buys me a rechargeable bluetooth Tx which charges from a 5v USB supply.
As soon as it sees USB power the unit starts up in pairing mode without the need for an on/off switch. I don't need the battery (nor want a LIPO in the car) so that is removed and I'll just drive it from the USB power input.
Plenty of room inside the Blaupunkt Melbourne 180 - its the shortened version and has no mechanical CD drive. It has both SD card and USB file inputs - the latter means there is 5v on the circuit board easily traceable from the existing front panel socket and on reasonably sized solder pads.
Patched in mini USB cable on the back of the front panel to feed GND and 5v
Mini Phono patched into the rear C1 connector giving me a line level audio feed.
Even though it is called line level this radio drives it through the volume knob, so still some gain control via the radio.
...all assembled, hot glued in place and hot glued strain reliefs on the new wires. The bluetooth module stuck to the front panel which hopefully helps its range. When the radio turns on, so does the bluetooth module which immediately looks for an existing pairing then streams whatever the radio outputs.
Update - later addition of a ground loop isolator to suppress audio interference
Final mod - a 15mm grommet on the volume knob so its easier to get a grip on when driving and especially when wearing gloves.
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