Creating a low-cost pin-compatible Arduino/Due board using an STM32L471

lkcl:
UA741 UA741 data sheet, product information and support | TI.com is $0.12 that's better....

honestly the last time i used op-amps was at school, and that was... um... 1985? :slight_smile: help!

uA741 is very old maybe in 1985 you used it !