I am working on LoRa projet and I am using a Adafruit Feather MO LoRa board of 3V.
I need to controll two servo and I could make it worling with an Adruino Mini Pro 5V and not with a Trinket Pro 3V.
As the Arduino Mini Pro is a 5V/16Mhz, I gess the I/O pin has a HIGH level of 5V. That right?
So if I connect
Mini Pro 5V Tx pin to the Feather LoRa 3V Rx pin, and Mini Pro 5V Rx pin to the Feather LoRa 3V Tx pin,
it will not work? That right?
Regarding the Rx and Tx pin of the Arduino Mini Pro 5V, is there a voltage to consider?
Many thank for your clarification