AT3108U Demo board quick start guide
3. Building and running project
11
3.2
Set up the I2C to UART Board and Touch Demo Board
3.2.1
Set jumpers to control the I2C to UART Board
1.
You can select a power source between USB power and external power using a jumper pin
(recommended to use +5V USB power). A 9-volt battery (a square battery) can be used as an
external power (max. 12V).
2.
Again, you can use a jumper pin to select one b5V and +3.3V of the selected power
source.
3.
If the Option Jumper pin shown in Figure 8 is not connected (OFF), 12CH Logic Type Touch
Sensors are supported. (e.g., AT3212, ATS12)
4.
If the Option Jumper pin shown in Figure 8 is connected (ON), 8CH Logic Type Touch Sensors
are supported. (e.g., AT3108)
Figure 8. I2C to UART Board Description