Asking about the Feather M0 here is fine. The problem is cross posting on two different forums. This can lead to duplicate effort by people taking the time to give the same answer that you already received on the other post. If you are going to cross post you should at least add a link to your other post so that people can see all the responses you received.
When you post links to the forum please use the chain links icon on the toolbar to make it clickable.