Thanks for the reply! I figured that would be the case, given how much other stuff you've managed to fit into the tiny space.

I was entirely unaware of the Ardueno Zero until I stumbled across the TinyZero, so any references to how the larger version works will not make any sense to me.

Does the TinyZero include a voltage pump, allowing me to plug a 3.7V lithium-ion battery in, and pull 5V from the 5V pin, or will I need an external voltage pump?

Alternatively, can anyone tell me where to find a higher voltage LI battery?

Appreciate any help.