Does Pololu USB AVR Programmer v2.1 support 3.3v TTL-level serial port?


I want to talk to my raspberry pi 3B using its serial port. I have a Pololu USB AVR Programmer v2.1 ( for my AVR projects and I wonder if I can use it as a 3.3v TTL-level serial port adaptor. It said in its description that it support 3.3v, but I am not sure if it support 3.3v for ISP only or also for the TTL serial port.

Thank you.

If you will take a few moments to check through the very comprehensive Pololu USB AVR Programmer v2.1 Users Guide, which you can download from the product page, you will discover this comment in the section on using the TTL-level serial port:

To make a working serial connection between the programmer and another device, you should make sure to run the programmer at a voltage that is equal to or close to the voltage of the other device. The programmer’s voltage regulator controls what voltage it will be using, and the regulator settings are described in Section 7.

thanks for pointing it out, I completely overlooked that line :smiley: