Button as an Button

[DasQ]

Hi,

i am Andy, 45 years old and from germany, my written english is not the best, so i will try to discribe my problem.
i flashed last week one of my nodemcu 0.9 with the fancy espeasy firmware.
after long time reading and looking for informations about my problem, i will ask at this forum.

so i want to made a thermometer and hygrostat with an dht22 (aka 2302), display on an 1602 LCD with i2c ... so far so good.
this will be work easy but now my problem. i made an simple button to wake up the background light from the lcd. so i put from one the gpio (d4) to the button with an 10k resistor to ground.
it will be change a bit at the devicetab form 0 to 1 and from 1 to 0 each time i press the button, but i want that the button only the time i press a 1 und unpressed 0.

next, in the device LCD2004 is an option button, if i select the same gpio from this button, nothing happens. where is my thinkingerror.
is this possiple, to turn on and off the background light, with a single push from the button?

thanks and sorry for my bad english.

cu andy

[toffel969]

Hi, change switch-type from active low to normal switch

[vader]

Why a 10k resistor to ground? Check 'Internal PullUp' for the switch and switch GND. Or must you switch Vcc?

[DasQ]

thank`s a lot

you are the best,


in german we said: sometime do not see the forest for the trees

[DasQ]

For the german guy how ask me for the Solution about this Problem. 2. 3. Screenshot
BTW. My biggest Problem was an bug in the firmeware at my First trys.

On the First Screenshot we See how its possible to switch off the Display for night