This 4 channel capacitive touch sensor using the TTP 224 IC offers capacitive sense input feed designed for touchpad control, followed by a 4- finger-sized touchpad.
A jumper arrangement to change the keypress output mode in Timed or Toggle, Active High or Active Low.
Separate jumper adjustments for changing the response time of the pressed key: 60mS fast mode or 160mS in Low power.
The output side of the board has 6 pin headers with 4 pins to be connected with the digital I/O of any microcontroller board (Arduino, ARM STM32).
4 status LEDs to check the status of each pressed key.
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