All I know that can be mined with low power using Raspberry Pi is Monero or Xmr and then the Duino coin, I just don't know if you know this op.
And from what I know, it doesn't seem like it's that recommendable to do it here.
I'm just asking you op, why is this what you want to do, it seems like it's better to mine Dogecoin than here in my opinion and this is just my opinion op,
that's why I just asked.