Thermionics

Post Whore In Training
Well, according to PiShop, they are starting to get CM4 / IO4 boards trickling in, but still no ETA on when I'll get my particular SKU. :(
 

MikeyFresh

Moderator
Staff member
Well, according to PiShop, they are starting to get CM4 / IO4 boards trickling in, but still no ETA on when I'll get my particular SKU. :(
Hopefully not too much more wait, although it is uncharted waters with regard to Raspberry Pi and all of those different permutations, each being a different SKU. They've never done that before so it could be slow going in the beginning.
 

Thermionics

Post Whore In Training
Hopefully not too much more wait, although it is uncharted waters with regard to Raspberry Pi and all of those different permutations, each being a different SKU. They've never done that before so it could be slow going in the beginning.
Yeah. And I got a low-to-mid variant, so that probably pushes me down the list a bit.
 

MikeyFresh

Moderator
Staff member
Yeah. And I got a low-to-mid variant, so that probably pushes me down the list a bit.
I thought the StationPi in IanCanada's recent group buy on diyAudio looked interesting in terms of integrating something in one box, however I'm not sure how it might work (or not) with the CM4/IO4, or a HAT-based DAC:

 

Thermionics

Post Whore In Training
I thought the StationPi in IanCanada's recent group buy on diyAudio looked interesting in terms of integrating something in one box, however I'm not sure how it might work (or not) with the CM4/IO4, or a HAT-based DAC:

OK. We have some movement on the CM4 front - turns out there is a shortage / availability issue with the wireless SKUs for some reason. However, I was able to get the non-wireless version with the 16GB eMMC storage and 1GB RAM (instead of the wireless, 2GB, no eMMC version I originally spec'd) for the same price, so it's en-route. Hopefully I'll have my grubby little paws on them by Friday and can start futzing about with the build (breadboard first - chassis to follow) using the IanCanada's IsolatorPi 2 / Millet linear USB PSU combo between the CM4 IO board and the HiFiBerry Digi+PRO (CM4 IO uses a 12VDC wall-wart PSU).

I may not have been able to get an RTX 3000-series video card or an Xbox Series X, but dammit, I'll have a CM4 to play with!

[maniacal cackling]
 

MikeyFresh

Moderator
Staff member
OK. We have some movement on the CM4 front - turns out there is a shortage / availability issue with the wireless SKUs for some reason. However, I was able to get the non-wireless version with the 16GB eMMC storage and 1GB RAM (instead of the wireless, 2GB, no eMMC version I originally spec'd) for the same price, so it's en-route. Hopefully I'll have my grubby little paws on them by Friday and can start futzing about with the build (breadboard first - chassis to follow) using the IanCanada's IsolatorPi 2 / Millet linear USB PSU combo between the CM4 IO board and the HiFiBerry Digi+PRO (CM4 IO uses a 12VDC wall-wart PSU).

I may not have been able to get an RTX 3000-series video card or an Xbox Series X, but dammit, I'll have a CM4 to play with!

[maniacal cackling]
Awesome! Not a bad swap, a streamer does not need any more than 1GB of RAM, and the eMMC storage can run the OS arguably faster/better than any SD card can.

You'll have to jump through a few hoops with no microSD card, not crazy, but a procedure to flash the eMMC.

That only needs to be done just once of course, then you can flash an OS image to it via connection to the board's USB micro port.
 

Thermionics

Post Whore In Training
Awesome! Not a bad swap, a streamer does not need any more than 1GB of RAM, and the eMMC storage can run the OS arguably faster/better than any SD card can.

You'll have to jump through a few hoops with no microSD card, not crazy, but a procedure to flash the eMMC.

That only needs to be done just once of course, then you can flash an OS image to it via connection to the board's USB micro port.
It was not bad at all, actually.
 

Thermionics

Post Whore In Training
Playing a little Jay Som (fantastic album, BTW) using a Meridian Explorer I had in a junk drawer. Boot is very quick with eMMC, the CPU is loafing, and I have close to half a GB of RAM free.

Now I just need to wait for my standoffs to show up so I can mount the Isolator II and the Digi+ PRO and start figuring out the panel layout for Front Panel Express. Trying to decide if I'm going to mount the Millett linear PSU in front of the board, adjacent to the board, or below the board (in all three configurations, there will be a chunk of metal between the PSU and the Pi.

1608262065125.png

I wonder if I have the first Compute Module 4 Moode system running in the wild?
 

MikeyFresh

Moderator
Staff member
I wonder if I have the first Compute Module 4 Moode system running in the wild?
I'd have to think so, unless Tim got his hands on the hardware first.

I have not seen any threads about the CM4 on the Moode forum at all.

Out of curiosity, if you go into Configure System, and then System Info, what kind of CPU temp are you seeing?
 

Thermionics

Post Whore In Training
I'd have to think so, unless Tim got his hands on the hardware first.

I have not seen any threads about the CM4 on the Moode forum at all.

Out of curiosity, if you go into Configure System, and then System Info, what kind of CPU temp are you seeing?
1608266465864.png
 

Thermionics

Post Whore In Training
Wow, that's pretty darn chillin'. Looks like you don't need no stinkin' heat sink, although a stick-on for that CPU can't hurt.
20201218_033728442_iOS.jpg

Well, maybe a little one. ;)

Note: linear PSU there for (a) scale and (b) figuring out where I'm going to place it for the chassis layout - hats not installed as I'm missing the requisite standoffs.
 
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Thermionics

Post Whore In Training
Well, I'm running into issues trying to get the Digi+PRO working - no sound. I'm getting a good connection to the DAC (e.g. lock and sampling lights are lighting up), but no audio. Back to the drawing board.
 

Thermionics

Post Whore In Training
 

Thermionics

Post Whore In Training
Note: there is one colossal PITA with the CM4 - in order to enable the USB2.0 connectors (which I need for my WiFi adapter), you need to add the following to /boot/config.txt:

dtoverlay=dwc2,dr_mode=host

The problem is that when you muck about with the audio settings, Moode conveniently wipes out any custom parameters you may have defined in /boot/config.txt. So you have to tread carefully.

Yet another reason to put a gig tap behind my main system - so I can stop f*cking around with WiFi.
 
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