How is mining on Raspberry PI 4 ?

Greeting ,

​

I´m beginner on mining topics (I started yesterday with MSI 1050 TI ) and want to know if someone its mining with Raspberry PI 4 and what is the hash rate?

​

I ready know that has to be a low low rate.

​

But I was think have 2 o 4 PI , maybe on cluster for mining all day with a low cost energy and low inversion.