So you're a Noob? Post your questions here until you graduate! Don't be shy.

User avatar
By QuickFix
#84457 You can use the ESP-01 to talk I2C without problem (I used it once to drive the display of a YouTube counter), whether it will work with the PM532 is for you to find out, but I expect no problems. You've only got to make sure you use the correct pull-up resistors, for instance like this: