Sending a value from one arduino to another I wonder if it is possible to send a value from one  arduino to another. 

Basically, I have one arduino measuring let's say weight, but I want to display that value using an lcd in another arduino. 
Is it possible to  send the value to a pin using analogwrite or digital write in the arduino doing the measurement and use analogread/digitalread at the other arduino making the display? 

I do not know if this is possible but what is attractive is that one can have several arduino making weight measurements, all showing up in the display of just one central one...
You could have the LCD Arduino be an I2C master and all the weighing Arduinos be slaves. There's an example of master/slave communication and wiring here: https://www.arduino.cc/en/Tutorial/MasterReader.

I2C supports up to 128 devices and the wiring is very simple.