WIFI on PI 2


#1

Just tried to boot flightaware to install USB WIFI. After a Syntax warning, all I get is a desktop with a big Raspberry and a trash can in the upper left corner. I don’t know where to go from here. Anyone have a suggestion? Thanks


#2

In my experience the RPi has problems supplying power to USB devices. Try using a powered USB hub and install the dongle and wifi adapter in it.


#3

Just reloaded the sd card and everything seems to be OK


#4

I haven’t had any issues using all four USB ports using a 5V 1500mA power supply, though I did have to dump a few USB cables from the power supply to the Pi 2 and used my USB cable from my phone but it didn’t like the 5V 2000mA power supply for my phone (mustn’t be stable enough).


#5

I’m thinking about using something like one of these to run the Pi

amazon.co.uk/RAVPower-6000mA … B00Q3UOYS0

connect the power supply to the battery, run the Pi off the battery … should smooth out supply bumps and also act a bit like a UPS.


#6

My experience with those is they can’t charge and provide power at the same time. Also, they tend to default to off until a button is pressed.


#7

My standard for running a Raspberry Pi–

https://www.pololu.com/product/2574 Pololu 5V step-up / step-down voltage regulator

Your input can go from 3 to 30 Volts and you get +5 out. For input voltages in the range of 4.5 to 15 Volts or so, you get a clean, well regulated 5 Volts at up to 2 Amps. That eliminates problems from cheezy USB cables (which you shouldn’t use in the first place), protects against spikes and other nonsense, and the Enable pin gives you a convenient power switch (or hard-core reboot).

Yes, they’re $15 each, but put one with your Raspberry Pi and you won’t have power problems.

bob k6rtm