15V from? We're assuming your input voltage is 5.00v, so 4.62v is a drop of almost 0.4 volts! YIKES! 15V considered a 'huge drop'?Where did you get. I didn't expect it to run properly with all of them connected directly, but it was.Ĭosmo wrote:Thanks for the input, but is. I plugged both directly into the pi, along with an Edimax wifi adaptor, and that was what I was running when everything was working. I forgot to note that when I was testing when it wasn't working, I had been running the keyboard and mouse through a powered hub, and I was having problems with that after the reflashing. I'd have to remove it from it's case to test it though, and I'm not sure if I feel like doing that right now (part laziness, part hesitant to touch anything now that I have it running ). I believe it was under 5V, but over 4.75V. I had tested it before I reflashed the cards, but forget the measurement. I haven't checked the voltage since the reflashing I am curious to see what it is reading now with the working power supply and cable to see if it differs significantly from what it was testing at before. The F3 polyfuse will also probably take another 0.05 Volt (when its well behaving). Mahjongg wrote:Anything more than say a tenth of a volt should be considered significant, 0.15V turns 5.0 volt into 4.85V volt which is considered a low limit. Hopefully, the same will be true when I try to run them tonight. I ran each a few times last night, and didn't have any problems. The new power supply and cable that I am now using would not run either card before I reflashed them. I reflashed both cards last night, and they both seem to be working now.
BLANK SCREEN AFTER ENTERING STARTX TRIAL
When I first set up both cards, I was using a much thinner cable (and a smaller power plug), and both cards ran through the setup and initial trial run, but would not work any time afterwards (the Raspian card would work fine in command line, but would not run if I tried to boot the window GUI). 15V considered a 'huge drop'? The cable I am using is decent thickness, and a brand name I know (Tripp Lite), although I cannot say the exact gauge. Pick up a 24 gauge MicroUSB cable and kiss all your problems goodbye!. Sure, the 2amp supply is running your Pi now, but it'll probably continue to be flaky!
The crappier the cable, the better your power supply has to be. Cosmo wrote:during startup Raspian: fluctuates between 4.62v-4.77vThat huge drop in voltage is most likely a low quality (30 gauge) microUSB cable.
0 kommentar(er)
