MikeyFresh

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Staff member
Yet another reason to put a gig tap behind my main system - so I can stop f*cking around with WiFi.
I hear you on that one. A friend of mine just bit the bullet and wired his house, after his old Netgear router died.

He was having the kitchen and one bathroom remodeled anyway, so he figured why not just also tear into a few more walls while we're at it?
 

Thermionics

Post Whore In Training
I hear you on that one. A friend of mine just bit the bullet and wired his house, after his old Netgear router died.

He was having the kitchen and one bathroom remodeled anyway, so he figured why not just also tear into a few more walls while we're at it?
Yeah - we need to have some minor electrical work done (a few can lights in the living room, modifying the wiring for a switch that currently controls both a light and a fan to have separate switches for each in the kitchen) so I figure while I've got the electrician here and he's in the attic crawlspace, I'll have him add five CAT6 drops: three in the family room / desk area (so I can get rid of a little 4-port switch), a second behind the family room TV (so I can get rid of another 4-port switch), and one in the living room behind the stereo console (so I can have a wired Pi in the main system).
 

Thermionics

Post Whore In Training
Well, I changed my mind - I think I'm going to have the PSU as an external brick, but use a cool-man Amphenol mil-spec 2-pin connector on the back panel of the player (cable will be captive on the linear PSU). That'll keep the CM4 small (ish) and keep any PSU heat or EMF / RF noise out of the chassis. I just need to find a copy of the rear panel mechanical drawing so I can fab up a Front Panel Express file (and figure out the placement of the connectors for the hat).
 

MikeyFresh

Moderator
Staff member
Well, I changed my mind - I think I'm going to have the PSU as an external brick, but use a cool-man Amphenol mil-spec 2-pin connector on the back panel of the player (cable will be captive on the linear PSU). That'll keep the CM4 small (ish) and keep any PSU heat or EMF / RF noise out of the chassis. I just need to find a copy of the rear panel mechanical drawing so I can fab up a Front Panel Express file (and figure out the placement of the connectors for the hat).
That drawing is definitely available on the RPF site IO4 product page, scroll down for the KiCAD file downloads.
 

Thermionics

Post Whore In Training
OK. I've got two panels done - will need to make some sides out of 3/4" ply and then get the other two panels milled:

20210107_061354108_iOS.jpg

20210107_061453796_iOS.jpg

Note: I'm waiting on the properly-sized nut for the add-on BNC connector and some rubber feet from McMaster-Carr, and the mini-XLR chassis-mount on the right is for the external 5V power for the Isolator II / HiFiBerry Digi+PRO
 

Thermionics

Post Whore In Training
BIG progress, really cool!
I'm trying to decide if I should go cheap & home-made on the sides and simply do 3/4" ply with appropriate threaded inserts for assembling the panels or find someone to machine some Delrin or something similar to spec...
 

Thermionics

Post Whore In Training
I'm trying to decide if I should go cheap & home-made on the sides and simply do 3/4" ply with appropriate threaded inserts for assembling the panels or find someone to machine some Delrin or something similar to spec...
I decided to give TAP Plastics a try and ordered a couple of Teflon panels in the correct dimensions ($10 + shipping). We'll see if I can drill & tap holes without being ham-handed about it.
 

MikeyFresh

Moderator
Staff member
I decided to give TAP Plastics a try and ordered a couple of Teflon panels in the correct dimensions ($10 + shipping). We'll see if I can drill & tap holes without being ham-handed about it.
White or black Teflon? Or are you only divulging that with the big reveal? :chin
 

MikeyFresh

Moderator
Staff member
View attachment 32445

Not sure if I posted this elsewhere already, but this is the completed unit. I've been using it for about 2 weeks now and it's just dandy.
Super cool, that really came out quite nice, that's a family heirloom quality streamer.

Still no CM4 chatter that I've noticed on either the Moode forum, or diyAudio, I think you have a bit of a world exclusive there.
 

MikeyFresh

Moderator
Staff member
Side note: apparently Steven Stone (TAS) has discovered the Raspberry Pi.

How to Build Your Own Low-Cost, High-Performance Streamer - The Absolute Sound
A friend of mine in CA had just mentioned that to me earlier today, as well as a Kal Rubinson review of the Volumio Primo in Stereophile. Apparently the audio press has discovered these low-cost streamers utilizing open source software are of interest to their readership, though the Primo isn't exactly cheap and is based on an ASUS Tinkerboard rather than the Raspberry Pi.

 

Thermionics

Post Whore In Training
A friend of mine in CA had just mentioned that to me earlier today, as well as a Kal Rubinson review of the Volumio Primo in Stereophile. Apparently the audio press has discovered these low-cost streamers utilizing open source software are of interest to their readership, though the Primo isn't exactly cheap and is based on an ASUS Tinkerboard rather than the Raspberry Pi.

I just hope this doesn't mean that the price of decent DAC / DIGI-type hats for RPI start climbing in cost. I realize there are some expensive versions out there, but I'm more of a beer-budget guy.
 
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