Hi all, i want to hook my Uno to the RS 232 output of a vending machine. on wikipedia i read that output levels of RS 232 are typically +-5V, 10V and 15V. The maximum input of Arduino is 5.5V so i probably need to lower this voltage. How do i do this? Thank you

Will this fry my Uno?

Topic		Replies	Views
UART and RS232 - how to use with Arduino Interfacing w/ Software on the Computer	5	9017	May 6, 2021
Interface rs-232 with Arduino Uno General Electronics	3	3001	May 6, 2021
Arduino Serial Over RS232 -> Low voltage 0-2.5V Interfacing	9	9405	May 6, 2021
How to wire RS232 serial to rx-tx? Troubleshooting	15	57983	May 6, 2021
Interface arduino with 7V rs232 Interfacing	5	1477	May 6, 2021