It's not enough to run a full node in some raspberry pi that you will never use. You should use it to transact too, so it becomes an economic node and you are in charge of your money 100%, knowing what you are doing. The problem is keeping your bitcoins safe.. which is why im asking what is the best operating system to run a full node that is also used as a wallet:
https://bitcointalk.org/index.php?topic=2332405.msg23830612please help.
You may point your lightweight wallet to connect to your own full node.
Personally, I signed transactions in my electrum cold wallet (I run it on always offline system that starts from a flash card, the OS used doesn't actually matter much, most important it could never go online), then I just imported the transaction into my electrum read-only wallet to just send the previously signed transaction