ESP8266 Community Forum

- Wed Apr 27, 2016 7:10 am #46299

Hi, I believe 50uA, but have never tested it. If you connect a 10k between 3.3V and a GPIO set as an input - if 50uA is correct then you should see about 0.4V dropped across the 10K.

Are you sure?? because even with 1k resistor to 3.3v, the input doesn't trigger..


Thank you

- Wed Apr 27, 2016 7:53 am #46304 Yes, the specs is saying 50uA as "IIL Input Leakage Current".

So, probably you have a problem elsewhere, or your hardware is damage.

- Thu Apr 28, 2016 3:48 am #46379

Yes, the specs is saying 50uA as "IIL Input Leakage Current".

So, probably you have a problem elsewhere, or your hardware is damage.

Thanks for reply. I am using esp 12 E , with and without a breakout board running nodemcu.
I have wrote a very simple code to which shows the problem.

Code: Select allgpio.mode(6, gpio.OUTPUT)
gpio.mode(9, gpio.INPUT)
gpio.write(9, gpio.LOW)




tmr.alarm(1, 100, 1, function()

if (gpio.read(9)==1) then
        gpio.write(6,gpio.HIGH)
    else
        gpio.write(6,gpio.LOW)
    end

end
)


The gpio 6 goes high when I give vcc to gpio 6...even if i use 100 ohm resistor to input, the gpio 6 wont go high.

Kindly help

Thank You

- Thu Apr 28, 2016 4:39 am #46381 Hi, GPIOs 6 and 9 are not the best ones to be starting out with as the by default have other uses (SPI flash). Try with 4 and 5, you should get better results. The table about halfway down this page shows the possable functions, off hand Function 0 is the default after boot.