Be warned: The diagrams in this post are …lets call it beta… because there are several problems with the battery
I created them because of many requests (OK, it was only one….)
Problem 1: Annoying safety switch
The battery has to be switched on with an extra micro switch – quite annoying, so I planned to get the needed energy directly from the battery – without the battery-controller. Well… many persons told me not to do that because of current fluctuations and possible deep discharge.
The battery-controller serves 1A to charge the battery. 1A – no more (only less..). This is a big problem when operating the RaspBoy while charging, because the RasPi and Pheriphery already require little bit more than 1A, so it´s not possible to operate the RaspBoy when battery is discharged
The solution: Another battery, more boards (luckily only 2 tiny ones)
User Jensma donated a 3,7V battery charger (right) and a 5V regulator (left) (many, many thanks for that!!) so I only need a different battery and some luck and my battery-problems are history.
Here comes the diagrams of the current wiring:
Power supply (and Composite):
I soldered the current supply directly to the Raspy (Ground = yellow):
USB and amplifier:
Note, that the +5V and Ground for the USB Hub are from the “Main power supply” and not from the USB port. The USB port only gives 500mA – this could be to less for the USB devices connected to the HUB.