A clone board called the freeduino, some headers were missing when I took pictures:
The LCD screen with its wires attached, note the transistor and the resistor, covered by (not yet heated) shrink tube, on the right side:
Example of the Freeduino and LCD attached:
Here's the proposed diagram of the Arduino board, the LCD screen, and the ISO interface.
You need:
- a duino clone board, serial or USB, your choice
- an HD44780 compatible LCD screen 2x16
- a transistor 2N3906 or NTE159
- three small push buttons
- a 220 ohms resistor
- a Freescale MC33290 ic
- a 510 ohms resistor
- a DB9 male
Freeduino, LCD, ISO interface:
