|Author:||Sébastien Lelong, The SirBot Project, 2007|
|$Revision: 544 $||Initial creation|
This small board provides an easy way to record sound and transmit data to the mainboard's microcontroller. Recording is done using an electret microphone, amplified with a LM386 sound amp. op. Output can directly be wired to the analog-to-digital (ADC) pin of the microcontroller.
Space on the board has been optimized to provide a small board.
This diagram is closed to the one provided in the LM386 datasheet. C4 and C5 are used to stabilized power supply (this is what I've read...).