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Entries from January 25th, 2012

Babyphone hardware design

January 25th, 2012 · No Comments · Uncategorized

Here are some details about the hardware design of my babyphone project. Case reuse One of the project goal was to reuse as much of the original speakerphone case as possible, including the power switch, volume control potentiometer, front leds and keyboard. I though that as the box already contained amplifiers circuits for the speaker [...]

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Babyphone audio playback

January 21st, 2012 · No Comments · Uncategorized

The final circuit has been built inside the phone enclosure, including amplifiers for the speaker and the microphone. Playback and record modules are developped an tested but the application code only supports playback for the moment. Next I need to improve the matrix keyboard driver to allow multiple key detection to trigger the record of [...]

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