ADEEPT Ultimate Sensor Kit for Raspberry Pi - Page 64

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VCC
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GND
The schematic diagram:
In this experiment, by programming the Raspberry Pi, we detect the High or Low of the
output terminal of the Touch Button Module by pin 12 of the Raspberry Pi, so as to tell
whether fingers touched the touch button or not.
Experimental Procedures
Step 1: Build the circuit
OUT
1
GND
2
IN
3
AHLB
4
VCC
5
TOG
6
U1
TTP223
LED
22pF
Cup
1K
R1
220Ω
R2
1
B1
touch button
1
2
3
P1
Header
GND
GND
GND GND
GND
VCC
VCC
Data
Data
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+
S