New Raspberry PI 4

Hardware
102

Just give it a go!

103

Hi @zynthianers!

I’ve been doing some stress test with my RBPi4 zynthian and i can say:

I AM REALLY REALLY HAPPY WITH THE RESULT!!

I set up a layer list like that:

zynthian_ui_load_test_layers

As you can see, i choose some heavy weights:

  • 3 x OBXd instances with heavy presets
  • 1 x Pianoteq with Steinwey D
  • 2 x ZynAddSubFX with AngelPiano (this one, alone, is almost unplayable in RBPi3)
  • PD Grids, playing to the maximum of density and speed
  • etc.

For stressing the thing, i used my Zaquencer for triggering 4 channels, and use the clone feature for triggering several others. Also played a MIDI file from the recorder, at maximum speed.

Until here, the RBPI4 didn’t feel the presion:

  • Current < 1 A
  • Temperature: 60-65 ÂșC
  • CPU Load < 35% in all cores

Finally i took 2 keyboards and connected to OBXd layers, playing with my 2 hands at once in a very very brute way. Then i started to get some XRuns, although the output was so loud that i couldn’t ear the “clicks” 
 :sweat_smile:

In this glorious moment:

  • Current = 1.1 A
  • Temperature: 65-70 ÂșC
  • CPU Load reached 65% in some core

I tried to record “session”, but the wav file only stored the first minute 
 sorry!

FYI, my RBPi4 is inside an aluminum case and it has no heat-sink or fans. Nothing at all.
As ambient temperature is quite cold these days (15ÂșC), i will repeat the test with the zynthian inside a cartoon box over a thermal blanket. Let’s see what happen when ambient temperature grows up 
 jajajaja! :crazy_face: :japanese_ogre:

Regards,

10 Likes
104

Told ya! :smiley:

3 Likes
105

Told ya! :smiley:

1 Like
106

This is actually an issue I’ve met and someone else on the forum too, I suspect it may be to do with xruns?

1 Like
107

The output from putty:

root@zynthian:~# python /zynthian/zynthian-ui/zynthian_gui.py
Traceback (most recent call last):
File “/zynthian/zynthian-ui/zynthian_gui.py”, line 43, in
import zynconf
File “/home/pi/zynthian-ui/zynconf/init.py”, line 5, in
from zynconf.zynthian_config import *
File “/home/pi/zynthian-ui/zynconf/zynthian_config.py”, line 29, in
import psutil
ImportError: No module named psutil

Sorry for spamming :pleading_face:

zynth
zynth1920×1080 71.7 KB

zynth-debug.txt (76.6 KB)
And also my debug info in attachment

108

Do you have an hdmi screen plugged in when you started up? I’m sure I see something similar if I don’t provide a screen

109

Yes hdmi screen is plugged and there is some logging of the processes before main gui appears. But too fast to read all the info. Only if I record it on video with 60fps and will try to slow it down
 Or otherwise find the boot log somewhere.

110

24 posts were split to a new topic: Using Zynaptik module for encoders

129

Exactly my solution ! Worked just fine for me.

1 Like
135

2 posts were split to a new topic: Looper as effect layer?

136

BTW I can update that the flirc all metal case does something really cool - they have a block that goes all the way to the CPU and the case comes with a heatsink sticker, so the whole case acts as a heatsink. Its outperforms even active cooling solutions. Since the zynthian case is also all-metal, I really suggest V4 to do something similar. It lets you put the CPU at 100% without throttling. cc @jofemodo take a note on this.

Here is someome confirming this (I also tested):

1 Like
137

So does Rpi 4 run Zynthian’s software without issues or should I order another 3b instead? I don’t care if it fits the kit enclosure etc.

138

It works perfectly. Better than ever 


1 Like
139

Great! Can’t have too many Zynthians.

3 Likes
140

Cool, just replaced the Pi3 for a 4 I had laying around, burned a new SD and it just works! Also great I am still mentioned in the config (prototype-kees) :rofl:

I had not used the Zynthian much cause I had many problems with xruns and so
 After an hour of playing, no problem anymore. Tnx again for this great project.

Cheers,
Kees

3 Likes
141

the prototype doesn’t exist anymore? Can we remove the option?

142

Well, I just replaced the PI, so the wiring stays the same and I was glad to see this scheme still existed. Sometimes I think this setup is not completely stable
 So if there is a better way to connect everything, I am open for suggestions. What is (Where can I find) the most stable schematic atm?

143

I am still using the _w32 which is a child of yours.
Nobody else is using that.
The most stable schematic is not using 23008 when you use encoders :slight_smile:

144

So I could convert to the all-in-one solution https://github.com/zynthian/zynthian-hw/blob/master/zynthian_allinone/zynthian_allinone.sch.svg ? Right now most of the encoders are directly connected to the PI as I can remember
 and I already have a 23017
 hmm, 23008 it is

WP_20160817_21_24_16_Rich
WP_20160817_21_24_16_Rich5312×2976 4.21 MB


I sometimes wonder if the touchscreen does interfere with the encoderconnections.

1 Like