Digital Capacitive Touch Sensor

模組簡介

TTP223 is a touch pad detector https://www.electroschematics.com/ttp223-capacitive-touch-switch-circuit/

電路圖

程式列表(IO輪巡式)

Blockly

Python

"""

EPY Sensor

-----------------

3V3 VCC

GND GND

P4 OUT

VIN

CDS

"""

from machine import LED

from machine import Pin

from machine import Switch

import utime

from machine import RTC

KeyA = None

P4 = None

rtc = None

ledR = None

ledG = None

KeyA = Switch('keya')

rtc = RTC()

ledR = LED('ledr')

ledG = LED('ledg')

ledG.off()

P4 = Pin(Pin.board.P4,Pin.IN)

while True:

if (P4.value()) == 0:

ledR.toggle()

ledG.off()

else:

ledR.off()

ledG.toggle()

if (KeyA.value()) == True:

break

utime.sleep_ms( 500 )

執行結果