power and ground to operate.
There appear to be two versions of the 1.8 inch TFT
LCD screen. One version has 10 pins and the other
version has 16 pins. The pin definitions are written on the
bottom of the circuit board, so it is just a matter of writing
them down before you flip it over and wire it up. In Figure
3, you can see that the pins are clearly marked.
The programs for this LCD will use the new built-in
TFT drivers found in version 1.0.5 of the Arduino driver.
The programs will not work without this TFT driver being
properly installed. Table 1 is a chart showing how to wire
the Arduino Uno to the LCD screen. I ran jumpers to
connect the two grounds and 5V pins together on the
breadboard.
Note that pin 1 of the LCD is on the right and pin 16
is on the left as you look at the top of the LCD screen.
Figure 4 is the schematic diagram of how to wire the LCD
screen up. Note that D0-D7 and the six analog pins are
October 2015 37
FIGURE 1. Glitch from lack of clock
synchronization. FIGURE 2.
Clock
schematic.
FIGURE 3.
Back side of
1.8 TFT LCD.
Table 1.
Arduino Uno 1.8 SPI TFT
GND Pin 01 (GND)
5V (VCC) Pin 02 (VCC)
Not used Pin 03
Not used Pin 04
Not used Pin 05
D8 Pin 06 (RESET)
D9 Pin 07 (A0)
D11 (MOSI) Pin 08 (SDA)
D13 (SCK) Pin 09 (SCK)
D10 (SS) Pin 10 (CS)
Not used Pin 11 SD Card
Not used Pin 12 SD Card
Not used Pin 13 SD Card
Not used Pin 14 SD Card
5V (VCC) Pin 15 (LED+)
GND Pin 16 (LED-)
FIGURE 4. Arduino-to-LCD schematic.
