Arduino pro micro RFID and servo
I've successfully implemented Door Unlock system described in this tutorial. At first I used Arduino Uno and RFID RC522 Reader and MG90S Micro servo.
When I used Arduino Uno with Arduino Pro Micro for arduino ATmega32U4 5V/16MHz, the RFID reader stops wirking after pluging the servo. Since Arduino Pro Micro have only 5v output, I used resistors to downgrade 5v to 3v in order to poser the RFID reader. I used same output 'vcc' to select 5v for the servo and 3v converted to the reader.
The problem is that each component woks perfectly independent each other, however, when I place them together they stop working.
Discussions
3 years ago
Don't use dropper resistors ! Use a regulator
Answer 3 years ago
which regulator ?
Answer 3 years ago
A 3.3V one !
Answer 3 years ago
A voltage regulator capable of providing the right voltage.
3.3V is still quite common and should work fine.