led lcd control

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led lcd control

#1 Post by vmfs1968 » 23 Nov 2015, 00:00

I have a esp8266 with a LCD, which is working very well
I noticed that the display lighting LED will connect through the transistor GPIO pin 7 PCF8574
it would be possible to put up an option on the lcd to control the LED blilho
or at least turn on and off?

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