Stoker wrote: > Hi > > I've just up graded to pCP 3.10 onto my rPi2B +IQ DAC, all went well > until I enabled JiveLite, then I noticed I could no longer access the > web server and on boot I am seeing the little yellow lightning bolt in > top right corner of console. I guess this means my power supply isn't up > to driving the rPi with 3.10 and JiveLite > > My system works fine with pCP 3.10 without JiveLite i.e. webserver > accessible and no yellow lightning bolt. > Also, it worked fine with pCP 2 with JiveLite running. > > What rating of power supply should I be using? Currently (no pun > intended) using a USB 'high current' charger supply, with no actual > rating printed on it. Would a 2.5A or 3A rated supply be adequate or do > I need something better? > > Cheers
I have the same set up as you that I power successfully with a 2A supply from Adafruit: https://www.adafruit.com/products/1994 The output voltage is 5.25V as explained here from the Adafruit description: This adapter was specifically designed to provide 5.25V not 5V, but we still call it a 5V USB adapter. We did this on purpose to solve a problem that occurs often with USB-powered gadgets: they draw so much current than the resistance of the cable causes a voltage drop, so instead of 5V, the device sees 4.75V or so. To avoid this problem, we made the adapter 5.25V. This is because the USB power specification allows up to 5.25V, and its safe for all 5V electronics, and has the benefit of making up for any loss due to thin USB cables. Basically, you can use it where ever USB 5V power is needed, with no risk of damage, and it will happily work at the full current range, no matter what cable you use! If you are currently using a thin (i.e. high resistance) USB cable, you might get better performance with a thicker cable without having to change the power supply. ------------------------------------------------------------------------ AngloCuencano's Profile: http://forums.slimdevices.com/member.php?userid=64040 View this thread: http://forums.slimdevices.com/showthread.php?t=106755 _______________________________________________ unix mailing list [email protected] http://lists.slimdevices.com/mailman/listinfo/unix
