I think the answer lies here.... " NodeMCU/ESP8266 has 17 GPIO pins which can be assigned to functions such as I2C, I2S, UART, PWM, IR Remote Control, LED Light and Button programmatically. Each digital enabled GPIO can be configured to internal pull-up or pull-down , or set to high impedance. When ...

I'm developing a project to automate the flushing of some gent's urinals at a venue. i'm using an AM312 PIR module as a "footfall" detector, the output is connected to D2 of the Wemos D1 mini, but the input never goes low, I've measured the voltage on pin D2 at 2.8V with the PIR unplugged. The PIR g...