The true experimental tweak thread

[steklo]

 

21 hours ago, gstew said:

Then there's always modifying the RPi to eliminate the on-board switching DC-DC converter and feed it good 3.3v & 1.8V... that would take it even higher. Also on my list to try.

6 hours ago, Cornan said:

I bought all the single 0.5A/1A boards from eBay seller Alexey/Idovr. I just saw that he has a his own website where you can order much easier than through eBay. http://www.ldovr.com/product-p/lt3045-a.htm

 

Seems like Alexey's "Mezzanine Power board for Raspberry Pi" is just tailored for that purpose:

 

http://www.ldovr.com/product-p/mpower.htm

 

Feeding it from Stammheim's PSU board with 6V should make a nice solution, shouldn't it?

[steklo]

I think set up that way (see picture attached) it would cover exactly the needs for a trifold nutrition of the RPi after having removed its DC-DC converter chip.

[steklo]

The question is if 1A @ 5V is enough when the  3.3V and 1.8V circuits of the Pi are fed each with 0.5A in parallel?

[steklo]

On 17.1.2018 at 4:13 PM, [email protected] said:

You can configure C1/2 to power PI also, BUT 1A is a current limit. From my experience it is enough to power PI2 even with USB Wifi dongle and USB memory stick (using Volumio OS), but need to do more tests with PI3. 

 

Modules D/E can be used to feed PI with 3.3/1.8V with DCDC switch removed (to simplify this solution http://www.runeaudio.com/forum/3x-powersupply-for-rpi-t4141-50.html).

 

Actually - only one wire need to be soldered (1.8V), 3.3V Net can be connected from GPIO.  

Hi Alexey,

 

thanks for your help! Please report back if option C2 is enough to run the RPi3 (without Wifi and no USB device attached).

 

As for 3.3V over GPIO – is there something specifically to be done to configure it that way or will this work out of the box when your board is attached to the Pi?

 

Best regards

Stefan

[steklo]

11 minutes ago, Cornan said:

That´s the life of a tweaker. Ones in a while you realize that you spend more time tweaking than actually listening to music!

 

Just watch out that this music thing doesn't start to become bothering and takes away too much time from tweaking... ;-))