mollyqh
Sending messages to @string do work. But you have to add @ at the start of a new line. There are examples at the LCD driver patch. You should also check the connections from analog out. It all works for me. But some isolation circuit might be needed because LCD consumes lots of energy and makes voltage lower than usual. Try this scheme:
http://howtomechatronics.com/wp-content/uploads/2015/07/LCD-Display-Tutorial.png?x57244
Some of the nodes need to be shorted together. So order of the upper nodes are like this
[GND, 5V, GND, BELA, GND, BELA, GND, GND, GND, GND, BELA, BELA, BELA, BELA, 5V, GND]