User Manual

We determine if the touch is active by seeing the difference between the current 'raw' reading value and the first

value. That means you do need to read the crickit touch pads

without

touching them first.

Try loading this code and touching the four pads while looking at the REPL

If you want to get more specific, you can read the ' raw_value ' value which is a number between 0 and 1023. Because

there's always

some

capacitance its reading you'll see a starting value of about 250.

You can then test against a threshold, or use it to measure how hard someone is pressing against something (a

fingertip vs a palm will give different readings)

import time

from adafruit_crickit import crickit

# Capacitive touch tests

while True:

if crickit.touch_1.value:

print("Touched Cap Touch Pad 1")

if crickit.touch_2.value:

print("Touched Cap Touch Pad 2")

if crickit.touch_3.value:

print("Touched Cap Touch Pad 3")

if crickit.touch_4.value:

print("Touched Cap Touch Pad 4")

import time

from adafruit_crickit import crickit

# Capacitive touch graphing test

touches = (crickit.touch_1, crickit.touch_2, crickit.touch_3, crickit.touch_4)

# Open up the serial Plotter in Mu to see the values graphed!

while True:

touch_raw_values = (crickit.touch_1.raw_value, crickit.touch_2.raw_value,

crickit.touch_3.raw_value, crickit.touch_4.raw_value)

print(touch_raw_values)

time.sleep(0.1)

https://learn.adafruit.com/adafruit-crickit-creative-robotic-interactive-

construction-kit

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