Hi-Fi Amp Control

Adding automatic control to older amplifiers via serial/IR interface

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I have a Cambridge Audio amplifier, which is too old to have HDMI or Ethernet control. Luckily, these amplifiers include a "control" input which accepts demodulated infra-red signals. This port was provided so that you could connect all your hifi equipment together and use one remote control for it all.

I've written a few iterations of software for Raspberry Pi & Arduino to control the amplifier.

v1 - Pi control using command line
v2 - Arduino control auto on/off by detecting audio signals
v3 - Pi control via HDMI - now my TV remote seamlessly controls my sound system
  • 1 × Raspberry Pi
  • 1 × RCA Socket
  • 1 × HDMI Cable

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