For this reason, a 2-pole rocker switch was used. In practice, it is the short circuit of two cables for constant, then shorting them with one cable in parallel with another pair. For radio AD182, it is necessary to simulate three switches so that the radio detects a cassette inside and A side is played, and the head of the radio is down. In described here radio, it is impossible to switch to tuner when the cassette is still inside, so that you have to emule its insertion and behavior of the drive. To make it properly, start with examining the operation of your radio and learn to turn on the cassette mode. To modify the radio, you have to remove the cassette mechanism firstly. This module can be handled only using the remote control. The device uses only the holes for the cassette and buttons for auto reverse handling. In order to make an aesthetic construction, there were no buttons in the radio housing. The module can be controlled using buttons or attached mini IR remote control. It is equipped with radio tuner (which is not used in this case), linear input and output for the preamplifier. The circuit is powered from 12V (uses a stabilizer 5V placed on the board). Display and card/pendrive input are in the place where a cassette was inserted once. It consists of inserting a module that plays MP3 into the radio. It is a modification of factory radio Grunding AD182M.
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