chwe wrote: ↑
Fri Oct 25, 2019 5:59 pm
and you think that's gonna change something when you use a 'apple PSU' (it's not only apple, they're just the famous ones)? USB-C is rated up to 3A at 5V, even the 'apple charger' wont change that. They just go to higher voltage when delivering more juice which would need a power management IC (PMIC) capbable of this. As far as I know, currently only one SBC largely available can handle higher voltages. So you won't gain much (tbh I don't know if the RPi PSU provideds proper 5+ V at 3 amps - it powers the RPi headless under all my usecases so I'm fine with it - for NAS/mass storage applications I always opted for other SBCs than the RPi)..
LOL. I don't think that's going to work - I'm just optimist that hopes it would
. And it is not Apple because it is famous - but because I have two laying around (one I used at work - now use as travel charger and one I used at home - now spare/'power supply when I need it in the kitchen'). I see how easily it can be proven wrong idea. Thanks for pointing that out
Maybe the right option is just to wire 5V from old PC power supply directly to pins.
Yeah, but, using words my 16 year old would say: "It requires effort"
- and also is prone to errors from misinterpretation what I read.
Here's a schematic. If you're using a premade male to female USB-C cable, only one wire needs to be cut. Cut either CC1 or CC2 and connect the female side to ground through a 5.1 KOhm resistor.
Personally I'd go with the onboard mod pictured above, rather than mangling a perfectly good USB-C cable.
Thanks - that's first step!
I don't have male to female - but just 'ordinary' USB-C to USB-C (beat me if I know is it male or female!) cable. I was thinking just identifying two wires there (GND and SS1 as on your schematic) - cut them (which is probably easier than trying to strip them on a small section) and solder them back with resistor between them.