GordonI soldered the connections from TP4056 module to battery, then from module to power switch, and then to the battery terminals on back of device.
Didn't have time to wire SD card, expansion/programming header etc. But I am have tested and verified that the power part of the mod is complete. When I turned it on it looks like I had already installed Arduino basic on this device.
Although I am not sure what is going on with Arduino BASIC's port to this device battery monitoring command. It is showing over 6000mV.
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