So I purchased the JDY-10 BLE 4.0 module and a very small MCU which only is capable of feeding 5v.
Since I'm not an electrical engineer, I've been reading a bit on the internet, and so far, I understand that the Bluetooth module will be fried if I hook it up to a 5v power source. As far I can understand, a voltage divider is not usually the way to go, but would it be okay in this case? - I plan to put this on a PCB that I make on my own, therefore the solution should be fairly lightweight/simple.
Furthermore, would the RX pin require a pulldown resistor? (The datasheet doesn't reveal anything in that regard - and to be honest, I don't think it has one)