Discussion in 'Raspberry Pi' started by Stitches, Nov 24, 2017.
What specific amp are you using, and with what speakers?
Ya, see, that's a 2.5w amp and a 0.5w speaker. Even at the lowest volume, it's too powerful and is going to distort and crackle. You need a 2w speaker for it to not do that.
If I use an RPI 2 max current is 650mA
With this driver board & 5inch screen:
and a 5inch screen the max current drawn is 500mA total. You can reduce that down 370mA by running the backlight at half-brightness (25mA).
Teensy 2.0 uses max 28mA.
The adafruit speaker and amp should use bugger all .
So that means with a Panasonic 3.6v 3400mah battery , I should get approx:
Approx 1200ma required from components
Therefore 3400/1200 = 2.9 hrs of battery life. ??
Using the powerboost 1000C which outputs 1.8A (adaquate as 1200ma is being drawn) it will take 3400/1000 = 3.4 hrs to charge. ??
Am I missing anything or stuffing anything up here ?
Separate names with a comma.