LCDuino (arduino) R2R relay preamp - diyAudio
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Old 9th May 2015, 03:35 PM   #1
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Join Date: Jul 2008
Location: Santa Clara, CA
Default LCDuino (arduino) R2R relay preamp

finally got around to boxing up my arduino-based analog preamp system:

Click the image to open in full size.

info on the schematic, boards, arduino source/build code, etc at The α10 Stereo Pre-amplifier

chassis is laser-cut (also DIY) at techshop.

control is via IR remote but there are hooks (serial) for remote-remote control via web (etc).

range is 127.5dB in half dB steps.

vol control is motorized and is a control-element, only; no audio goes thru it. all audio is thru the latching relays in series/shunt/bypass topology.
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