| Line 12: | Line 12: | ||
= Power consumption = | = Power consumption = | ||
Measured power consumption with cheap crappy meter on the wall outlet end, so measured values are power brick + pi + AMP/DAC + speakers. | Measured power consumption with cheap crappy meter on the wall outlet end, so measured values are power brick + pi + AMP/DAC + speakers. | ||
Weird, it consumes about 5 Watts when AMP is turned on, and it doesn't matter if and how loud music is playing. With AMP off (jumper on) it consumes about 3.5 Watts. | Weird, it consumes about 5 Watts when AMP is turned on, and it doesn't matter if and how loud music is playing (I did not go very load yet, will do that during daytime). With AMP off (jumper on) it consumes about 3.5 Watts. | ||
Jumpers on mute or head phone headers do not make a difference in power consumption. | Jumpers on mute or head phone headers do not make a difference in power consumption. | ||
Revision as of 19:32, 10 August 2017
| PiRistona SA5026A | |
|---|---|
 | |
| Participants | Dennis |
| Skills | Linux |
| Status | Active |
| Niche | Music |
| Purpose | |
| Tool | No |
| Location | Niz |
| Cost | |
| Tool category | |
AristonaSA5026A.jpg {{#if:No | [[Tool Owner::{{{ProjectParticipants}}} | }} {{#if:No | [[Tool Cost::{{{Cost}}} | }}
What
I've acquired a beautiful antique Aristona SA5026A. Plan is to make a nice music player out of it using a Raspberry Pi B+ and a Suptronics X400 AMP/DAC HAT.
Power consumption
Measured power consumption with cheap crappy meter on the wall outlet end, so measured values are power brick + pi + AMP/DAC + speakers. Weird, it consumes about 5 Watts when AMP is turned on, and it doesn't matter if and how loud music is playing (I did not go very load yet, will do that during daytime). With AMP off (jumper on) it consumes about 3.5 Watts. Jumpers on mute or head phone headers do not make a difference in power consumption.
Volume control
There is a knob on the X400, and volume can be set from within Volumio. The two seem to work independently. I seem to get less noise when the knob is turned low and volume in Volumio is turned up, than the other way around.
Software
WiP
Rune Audio
Tried v0.3-beta (29/10/2014), could not get it stable. It consistently threw kernel panics when rebooting, and the WebUI kept crashing.
Volumio
Tried volumio-2.246-2017-07-31-pi.img. After first boot you should wait while a lot of stuff is happening, like partition resizing. If you reboot it to soon you'll end up with a non working system. Got DAC working from within the WebUI:
- Go to Menu
- Choose Playback Opions
- Enable I2S DAC
- Choose IQaudIO Pi-DigiAMP+
- Save and reboot
OSMC
Got DAC working, needed two lines in /boot/config.txt:
dtparam=i2s=on dtoverlay=iqaudio-dacplus
After a reboot I could select this as default audio output in OSMC \o.
Todo
- Switch AMP on/off from the Pi to save 1.5W when not playing music
- Check if there is space in the Aristona and decide on how and where to mount the Pi and HAT.
- Decide on speakers.