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GND: a pin connected to
the ground
SCL：a pin interfaced with
SCL or A5，used for IIC
communication
(3)Add I2C LCD 1602 Library：
Set code by the library, and click"Extensions"to add the library file:
Tap
https://github.com/keyestudio2019/ks_IoT
click " Search " , as shown below. Click
IoT_keyestudio library is set up.
ature：
VCC：A pin that connects
to a +5V power supply
Backlight
IoT_keyestudio
SDA ： A pin that
connects to analog
port
A4
communication
Adjustable
contrast
in the searching box and
library. Then the
for
IIC
304
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