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gpiozero to control a remote Moode?
#1
For my Moode set-up I need to have a simple, physical user interface remote to the actual Moode device generating the audio. Specifically, an on and off button, volume control and one or two radio station selectors.

I was thinking of having a two Pi set-up - one running Moode and another to do the control (ie, some buttons connected to GPIO). Both would need to run gpiozero (https://gpiozero.readthedocs.io/en/stable/ ) and the signals transferred over the LAN.

Has anyone done this? Is there another, easier way?

Doing it this way, seemingly, means I would only need to ensure the daemon starts on the moode Pi so would keep code customization to a minimum, but I haven't gone to far yet in testing.
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#2
"physical user interface remote"
LIRC I/R ? Buttons...??? both quite simple and shown here...
http://moodeaudio.org/forum/showthread.php?tid=187
http://moodeaudio.org/forum/showthread.php?tid=198
http://moodeaudio.org/forum/showthread.php?tid=190

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#3
(09-03-2018, 07:08 PM)DRONE7 Wrote: "physical user interface remote"
LIRC I/R ?   Buttons...??? 

Yep, certainly an option, but the Pi running moode is going to be hidden along with the amplifier. So IR would be difficult and running cables to / from GPIO buttons isn't an option given the room layout.

Using a 2nd Pi (say a Pi zero) I could have a faux-kitchen-radio-type set-up (wife friendly!) which would deal with 90% of the user interactions. It could even have a screen to show the time / date / station / song etc. All communicated over the LAN.

That's the idea anyhow.
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#4
You're describing a Phone or Tablet...... Touchscreen, network control...... so another Pi seems superfluous...?

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#5
Wouldn't it be easier to have button presses on the pi zero trigger commands on moode via ssh or the web api?
You wouldn't need to customize moode at all. I think.
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#6
(09-03-2018, 08:17 PM)DRONE7 Wrote: You're describing a Phone or Tablet......   Touchscreen, network control......  so another Pi seems superfluous...?

Yeah, agreed - this is an unusual use case. "We" don't want "more gadgets" lying about the place... Or needing to have our phones on us to change volume etc.

(09-03-2018, 11:42 PM)FizzyTea Wrote: Wouldn't it be easier to have button presses on the pi zero trigger commands on moode via ssh or the web api?
You wouldn't need to customize moode at all. I think.

Ah, that's an interesting idea. My first thought was that it would work fine for 'select playlist x' but might struggle with volume control - repeated ssh connections could be very laggy. Unless I altered the increments. Hmm, I'll need to think.

That's why I thought going down a few levels and passing only the GPIO levels would be fast and, to the Moode, seamless.

I'll need to do some customization of Moode: I build my amp with a relay to control the main power - intending to feed it the signal from the Pi. Someone has posted code to do this through Moode which is cool. I was intending to watch the mpd status file and use that to trigger.
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#7
(09-04-2018, 08:21 AM)tristanc Wrote:
(09-03-2018, 11:42 PM)FizzyTea Wrote: Wouldn't it be easier to have button presses on the pi zero trigger commands on moode via ssh or the web api?
You wouldn't need to customize moode at all. I think.

Ah, that's an interesting idea. My first thought was that it would work fine for 'select playlist x' but might struggle with volume control - repeated ssh connections could be very laggy. Unless I altered the increments. Hmm, I'll need to think.

That's why I thought going down a few levels and passing only the GPIO levels would be fast and, to the Moode, seamless.

/var/www/vol.sh handles moode's volume nicely

Code:
vol.sh with no arguments will print the current volume level
vol.sh restore will set alsa/mpd volume based on current knob setting
vol.sh <level between 0-100>, mute (toggle), up <step> or dn <step>, -help

e.g.

/var/www/vol.sh up 2
/var/www/vol.sh mute
/var/www/vol.sh 55

Search the forum for lots of other nuggets like that. Also mpc is simple for play/pause, playlists etc.
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#8
(09-04-2018, 08:21 AM)tristanc Wrote:
(09-03-2018, 11:42 PM)FizzyTea Wrote: Wouldn't it be easier to have button presses on the pi zero trigger commands on moode via ssh or the web api?
You wouldn't need to customize moode at all. I think.

Ah, that's an interesting idea. My first thought was that it would work fine for 'select playlist x' but might struggle with volume control - repeated ssh connections could be very laggy. Unless I altered the increments. Hmm, I'll need to think.

That's why I thought going down a few levels and passing only the GPIO levels would be fast and, to the Moode, seamless.

http://moodeaudio.org/forum/showthread.p...87#pid2487
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#9
Even better - I hadn't realised commands could be passed by http. Thanks for the pointer! So a python script listening for GPIO events to issue http requests would be so much simpler.

I'm remote from my Moode currently, but I guess there may be a similar API call to select / play a specific playlist?
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#10
(09-04-2018, 09:33 AM)tristanc Wrote: Even better - I hadn't realised commands could be passed by http. Thanks for the pointer! So a python script listening for GPIO events to issue http requests would be so much simpler.

I'm remote from my Moode currently, but I guess there may be a similar API call to select / play a specific playlist?

I use mpc (via lirc) for that.
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