Without any tasks, the Pi would then consume around 1 watt of power. Its power use can be reduced further by disabling its unused HDMI video output. The 1 model B+ typically uses 330 mA and when idle even less (often 200 mA). The Raspberry Pi model was quite appropriate since I needed something with Ethernet (to communicate with the AVR) and USB (to communicate with the power outlet strip) that would draw the least amount of power.
It concerns a Raspberry Pi 1 model B+ and an ancient Gembird SIS-PM USB programmable power outlet strip. I had some old unused components lying around, which I repurposed to come to a solution. It concerns a simple, proprietary protocol of which the specifications can be downloaded. This protocol can be used to both read the status of the receiver (push and pull) and to actively manage it. Luckily, this particular receiver supports the Denon AVR control protocol over Ethernet. This model also lacks switched power outlets, something which older receivers used to have in times long gone. The AVR concerns a Denon AVR-X2700H, of which the European model only has an Ethernet connection for intelligent input/output with other devices. Keeping the device on when it is not used is unacceptable due to the high energy cost, and turning the device on and off manually is uncomfortable.Ī solution would be to let the AVR switch the power of the subwoofer. When it is turned on, it consumes around 40W of power. It has its own powered amplifier, but it can only be turned on and off by (un)plugging the power or by switching a small power switch on the back of the device. It is used with an adapter that makes it work with any receiver that has a subwoofer pre-out output, instead of the stock control pod. The used subwoofer was part of a Logitech Z-5500 speaker set. Everything is controlled by a single Logitech Harmony infrared remote control (something with which I have had some experience with in the past).Įverything worked great, except for one part. It included a TV, media playing devices, a large number of speakers (front, rear, ceiling, subwoofer) and an audio/video receiver (AVR) to drive the speakers.
DENON AVR CONTROL PROTOCOL FROM TERMINAL FULL
Plus nice if I could hold down the button and it increment in this case but doesn’t look like that works nor does the setFrequency work on this one.Recently I designed and implemented a full home cinema.
Personally used to having volume up on the right and down on the left. Now if I can switch the up and down arrows. Setpoint item=DenonAVRX2200W_MainZoneVolumeDB label="Volume (dB)" minValue=-80 maxValue=18 step=0.5 visibility= Do I have to manually set min/max and step? If so why didn’t I need to do that with the scroller? Thought somewhere that was configurable in the GUI as well but don’t have it in my setup documents. Have to use the scroller to get it back to the “negative” range. But instead of starting at negative 80 or whatever it is the minute I touch one of those up/down arrows it goes from -8.5dB to 0 and the volume is really loud and then can only go up. Can’t type it in but that’s more control. OK so it makes it an arrow up and arrow down thing so I can increment. You can change the item presentation in the Sitemap to a Setpoint. You would need to change the UI for the volume control.
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