Capacitive Touch HAT

This Raspberry Pi add-on board provides 12 capacitive touch inputs and all the logic to read them over a simple I2C communication bus.

Baded on the MPR121 chip, this HAT allows you to create electronics that can react to human touch, with up to 12 individual sensors.

Code

from Adafruit_MPR121 import MPR121
from time import sleep

cap = MPR121.MPR121()

last_touched = cap.touched()
while True:
    current_touched = cap.touched()
    for i in range(12):
        pin_bit = 1 << i
        if current_touched & pin_bit and not last_touched & pin_bit:
            print("{} touched!".format(i))
    last_touched = current_touched
    sleep(0.1)

详情 由 Adafruit 制造 HAT 形态 EEPROM 产品编号 需要 3v3 供电 使用了 2 个 GPIO 引脚 使用 I2C 通讯 0x5A: mpr121 更多信息 GitHub 仓库 立即购买