SunFounder PiDog Kit, Release 1.0
3.5 Dual Touch Sensor
Dual channel touch sensor, based on two ttp223 touch sensors. When a touch signal is detected, the corresponding pin
level will be pulled low.
TTP223 is a touch pad detector IC that provides 1 touch key. The touch detection IC is specially designed to replace
the traditional direct keys with different pad sizes. It features low power consumption and wide operating voltage.
Specifications
• Power Supply: 2.0V~5.5V
• Signal Output: Digital signal
• Connector: SH1.0 4P
Pin Out
• GND - Ground Input
• VCC - Power Supply Input
• SIG1 - Touch signal 1, low level means touch
• SIG2 - Touch signal 2, low level means touch
3.6 11-channel Light Board
This is an 11-channel RGB LED module, which is equipped with 11 RGB LEDs controlled by the SLED1735 chip.
SLED1734 can drive up to 256 LEDs and 75 RGB LEDs. In the LED matrix controlled by SLED1734, each LED has
on/off, blinking, breathing light and automatic synchronization and many other functions. The chip has built-in PWM
(pulse width modulation) technology, which can provide 256 levels of brightness adjustment. It also has a 16-level dot
correction function.
Specifications
3.5. Dual Touch Sensor 97
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