Hi there i will created new clone for practice. Changed algo at cloned one For example nist5 to skein. I created genensis block. Created daemon and qt and nodes are connected. Everything is well to here. But i can't start mining new coin. Stratum some times not starting. Sometimes it is starting and not working it says bad mining adress and get time out. Is there any way to mine my coin without stratum?
Yes. You can solo mine with software like cpuminer/cgminer so long as you have at least two nodes in sync AND have a large enough coinbase height (usually around 20). To generate the first 20 blocks, use the command line option generate nblocks or equivalent.