Of course, a Raspberry Pi itself has nowhere near the required computational power to effectively mine bitcoins. However, USB powered Asicminer Block Erupters ... back from mining at 1.3Gh/s.

To really understand crypto mining, you sort of need to mine some crypto. So that’s what I did, using a tiny, cheap, single-board computer called a Raspberry Pi to mint Monero cryptocurrency.

Running Monero Node on Raspberry pi is the hot talk in the community. Many of them are looking for a guide to do this. It is important now to differentiate between node and mining in this context.