Is there a way to add an on/off switch to the load output directly on the Adafruit USB LiIon/LiPoly charger v1.2?
I’m aiming to connect this charger to an ISD1820 voice recorder and player so that it can power the sound device as well as have a usb-recharge functionality for an attached LiPo battery.
As the ISD1820 also has two LEDs connected to it, the addition of an on/off switch somewhere in the circuit chain will allow me to turn the ISD1820 unit off when not in use.
Any assistance or advice would be greatly appreciated.
Adding a switch on the load output of the charger shouldn’t be too hard but will require some soldering.
I found the schematic for the charger here.
I would probably try and make a proto-board to interface with the load and have a new connector to the voice recorder on that. Then connect the proto-board to the charger via the empty header pin terminals using some headers.
Adding a switch between the LOAD+ header pin terminal and new connector on the proto-board would then give you an on/off switch to the load.