Step 1: The Liquid Crystal Displays
The Arduino is a 16 x 2 LCD with 16 through holes for wires or connecting pins, 8 data inputs and 2 for LED light.
The LCD beside the Arduino LCD is a 16 x 2 LCD with 14 through holes for connecting pins or wires, 8 data inputs.
The next LCD is a 16 x 1 LCD with 10 straight connecting pins 4 data inputs.
And the last LCD is a 16 x 2 LCD with long enough leads to keep as is, 8 data inputs and 2 for LED light.
The LCDs I am going to add pins to are the first two.
Step 2: Tools
Long Needle Nose Pliers
Spring Loaded Tweezers
Soft Wire Brush for cleaning the soldered joints.
Step 3: Connecting Pins
I start with a circuit board that has the components I want like this mother board.
To hold onto and add weight to the component I want, I clip the spring loaded tweezers to the component and heat all the soldered joints at the same time with the blowtorch with a low flame.
When the soldered joints are melted the component will fall out of the circuit board and if you are good at it you won’t scorch the circuit board.
These are the pins and connectors I salvaged from this motherboard.
Step 4: Selecting the Pin Connectors
Since the connectors have different sizes and spacing of pins I select the connectors closest to the through holes of the LCD.
Last I chose whether I want straight pin connectors or bent pin connectors, for the two LCDs I am doing today I will be using bent pin connectors.
Step 5: Fitting the Connector
Don’t through the unused pins out they can be used on another project or collect them for the gold and take them to a smelter.
Step 6: Soldering the Pins
When you are happy with the alignment solder the inside pins then remove the plastic part of the connector that was keeping the pins in place and clean the excess soldering past off the joints with the soft wire brush.
Follow the same steps with the 16 pin Arduino LCD and you are done pinning your LCDs.