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Instruction Guide Raspberry Pi power Supply
#21
(04-21-2019, 11:58 AM)Malefoda Wrote: The base offer is the bare PCB, but Tea-Bag (the GB guy) often offers a mini-kit with hard to find or to select parts like transistors. Maybe resistors and caps won't be in the mini-kit, as they are easy to find. But yes that's still some work, buy a transformer, a case, solder and such. I sweat a lot when I need to do command line, I understand some feel the same with the soldering iron Smile
That may be in few weeks or months but if any interest I can share my buying/building experience here with the moOde community (with a new thread as that'll be quite specific).

Thanks for info
Its not that I am not a friend with soldering iron or DIY(+25 years of experience electro/mechanical engineering). But sourcing and digging out all parts from different places is something what usually puts me off.
But will keep an eye on this thread Wink
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#22
For those who want to use the RPI with a HAT and not use the Ethernet or USB you can kill the power to both USB/Ethernet with this command.

Disable 
sudo sh -c 'echo 0x0 > /sys/devices/platform/soc/3f980000.usb/buspower'

Enable 
sudo sh -c 'echo 0x1 > /sys/devices/platform/soc/3f980000.usb/buspower'


Put it in a script and have it auto-magically kill the power with each boot.


#!/bin/bash

sleep 25 #<----adjust the sleep time to your preference

[command here]
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#23
(04-20-2019, 07:44 PM)Tenbagger Wrote:
(09-14-2018, 05:28 PM)energyi Wrote: Can someone please help me understand why a battery isn't a better option especially for the low cost? Seems to me that a battery will add absolutely no noise. Thanks.

Energyi

I regularly run moOde on Raspberry Pi 3 B+ headless from battery pack (2.4 A) with headphones, and just as often from the official switching PSU with headphones. In my experience the sound is noticeably more lively when connected to mains, and hands down better. (It makes me wonder if a battery is quick enough for changes in power demand from the DAC, but I am just a lay man...)

I have ordered a linear PSU, hoping to experience, again, noticeably better sound.
Linear PSU received. The last few hours have been... Bliss!

Better sound; warmer, more oomph, seemingly more truthful details. 

For anyone interested: I have not done any soldering (not trying to power the analog part separately). The PSU is 5.15V at 3A: http://www.tomanek.net.pl/tomanek-ulps-m...2-pi3.html
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