No need to rush ahead!
Please give me a few days first 
About speed:
Stefan said response time was ok even with wireless buttons.
I will try that first, so we may compare it later.
About opto isolation:
see post #37
No need to rush ahead!
Please give me a few days first
About speed:
Stefan said response time was ok even with wireless buttons.
I will try that first, so we may compare it later.
About opto isolation:
see post #37