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I have designed and tested a new circuit that allows you to use any line level audio (via your own audio player) to customize any Gemmy talking prop that utilizes a motor for the jaw movement (which most do). This also pertains to any talking skull or prop that may not necessarily be labeled as "Gemmy" but uses a motor and return spring to operate the jaw. It operates the motor from the stock battery power which is typically 3 or 4 AA batteries, and requires an additional 9-12V control power source which can be a 9V battery or a wall wart type adapter. The board design is 2" x 2" and should fit easily inside most props and skulls. This conversion will also need your own amplifier or powered speaker such as cheap computer speakers. The board will work with any audio dialog and does not require any additional programming. It also does not require adding any special tones to the audio tracks. Comes with one 3.5mm stereo audio cable, connecting wires, and 9v battery snap.
$35 each plus shipping.
$35 each plus shipping.