Re: Help with ESP8266 01
Posted: Wed Jun 29, 2016 8:21 amernst1024 wrote:martinayotte wrote:Also, I never understood what pullups are? I explained it to myself a pullup is if you add 3,3V to a GPIO Pin? I have some 10k resistors here same question: how would I connect them to GPIO0/2 and RST?
Connecting a pin straight to VCC means the pin can pull a lot of current. All you want is a postive voltage, a resistor limits the amount of current it will pull but keep it at a positive voltage.