i need turn on LCD when sensor tcrt5000 beginning to drive .
the circuit is working less LCD
sorry for my english
hernani

 

Did you test without sensor?
Max.

 

sorry i make a mistake , lcd work, but not when sensor start to drive, i want LCD turn on when sensor start to drive.

 

What sensor?

 

I'm not familiar with Fritzing, but there has to be better ways to organize/layout this schematic. I guess practice makes perfect.
What are you trying to accomplish?
Where's the sensor in your schematic?

 

I'm not familiar with Fritzing, but there has to be better ways to organize/layout this schematic. I guess practice makes perfect.
What are you trying to accomplish?
Where's the sensor in your schematic?

sensor is led with transistor, i want turn on LCD when sensor start to drive, sensor start to drive when to cover up, sensor is tcrt5000

 

What do you mean by drive ?
Explain.

 

is when beginning to start work

 

Not enough information

 

How ???
Power ON?
Backlit ON ?
Initializing ?
Explain in detail.

 

i want power on lcd when sensor cover up, circuit how it is lcd it is always power on.

 

Ur diagram shows that you are resetting the uC with the sensor.

 

yes, and i want shutdown lcd when sensor reset uC

 

Do you mean turn OFF the LCD Completely ?
If so, use a transistor or MOSFET as a switch to cut off the LCD power supply. You can use the same reset connection to do so

 

thanks, i put transistor and work
now when i put LCD backlight on letters stop rolling , i wont turn on LCD and letters rolling , how it is letters rolling when backlight is off.
thanks

 

Because you are just turning backlit on and off.
Try turning on the whole LCD. This way when LCD turns on and uC resets it will start the code when the LCD lights

 

circuit work fine now, but i wont reduce mA in standby how can i do?
standby --> 74mA
one sensor cover up --> 88mA
two sensor cover up --> 90mA

 

Before one sensor...now two ???
Make up your mind. Do not throw bits and piece at us.

Reducing stby current is lot of work.
Code needs to be optimized for low power consumption and proper circuit design is also needed.