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You can open up the serial console to see the touches detected and printed out.

Creating an capacitive touch input

Pads A1 - A7 can be used as capacitive TouchIn devices:

touch1 = touchio.TouchIn(board.A1)

touch2 = touchio.TouchIn(board.A2)

touch3 = touchio.TouchIn(board.A3)

touch4 = touchio.TouchIn(board.A4)

touch5 = touchio.TouchIn(board.A5)

touch6 = touchio.TouchIn(board.A6)

touch7 = touchio.TouchIn(board.A7)

Creates seven objects, one connected to each of the cap touch pads.

Main Loop

The main loop checks each sensor one after the other, to determine if it has been touched. If touch1.value returns True,

that means that that pad, A1 , detected a touch. For each pad, if it has been touched, a message will print.

A small sleep delay is added at the end so the loop doesn't run

too

fast. You may want to change the delay from 0.1

# CircuitPlaygroundExpress_CapTouch

import time

import board

import touchio

touch1 = touchio.TouchIn(board.A1)

touch2 = touchio.TouchIn(board.A2)

touch3 = touchio.TouchIn(board.A3)

touch4 = touchio.TouchIn(board.A4)

touch5 = touchio.TouchIn(board.A5)

touch6 = touchio.TouchIn(board.A6)

touch7 = touchio.TouchIn(board.A7)

while True:

if touch1.value:

print("A1 touched!")

if touch2.value:

print("A2 touched!")

if touch3.value:

print("A3 touched!")

if touch4.value:

print("A4 touched!")

if touch5.value:

print("A5 touched!")

if touch6.value:

print("A6 touched!")

if touch7.value:

print("A7 touched!")

time.sleep(0.01)