Building the LCD circuit

I have started to build the LCD circuit. I have made some changes to the original plan:

Modified LCD circuit

I have changed the connection of the contrast potentiometer. Now it is between the ground and 5V. The R/W pin of the LCD is now connected to the ground and not controlled by the Arduino. This way we can save one pin. I use the saved pin 12 to control the LCD back light.

Here is the current state of the wiring. It is not ready yet. I use a 10 pin socket where I will connect the LCD with a ribbon cable. The connection of the socket is almost ready. Only the contrast line is missing from the potentiometer. I will add two pins for connecting the back light of the LCD with a jumper wire. That is also missing.

Wiring the LCD socket

Soldering