I had a pile of 20 older banana pi laying on my desk for well over six months, as I was not sure what to utilize them for.  The project they had been used for in Micronesia, Solar Powered Digital Libraries, was upgraded to Raspberry Pi3’s. By chance, I came across this article by NovaSpirit Tech using Raspberry Pi3s for CPU Crypto Mining.  I thought perfect, I will set up each of the Banana Pis for mining.  The NovaSpirit site: https://www.novaspirit.com/2017/10/19/crypto-mining-sbc/

This CPU based mining is for MagiCoin and looked quite interesting.

I had a stack of 4gb SD cards from a past project, so I reformated them with ApplePi Baker and burned the latest image:

Raspbian-lite-bpi-m1-m1p-r1.img 2016-07-12

Once the updates and upgrades were performed, I follow the NovaSpirit instructions.  It was not hard, with the only change in the compiler setting for the ARM cortex 7a processor vs the Raspberry Pi3’s cortex-a53.  So I used mcpu=cortex-a7 for the Banana Pis.

In my set up, I also used Bullmining.com mining pool.    Once the bullmining account was set up, I added 20 workers.  The settings were straightforward for each of the Banana Pis.

./minerd -a m7mhash -o stratum+tcp://xmg.bullmining.com:3333 -u Weblogin.WorkerName -p WorkerPassword

I also had two Orange Pi zeros and a Pine64 laying around and set the compiler for their ARM cpus and added two more workers to bullmining.

Now I am CPU mining away with 22 Pi computers!