CHAPTER
FIVE
INVENTOR LEARNING KIT EXPANSION BOARD
This expansion board is compatible with the Keyestudio Nano Plus development board and Keyestudio ESP32 devel-
opment board. The voltage on VCC can be set to 3.3V (ESP32) or 5V(Nano) via a DIP switch.
It integrates four buttons, four LEDs(red, yellow, green and blue), six WS2812 RGB LEDs, a buzzer, a PIR motion
sensor, an IR receiver, a sound sensor, a photoresistor, a 8002 amplifier, a potentiometer, an ultrasonic sensor, a 4-bit
digital tube display, a 8x8 dot matrix display and a LCD 1602 display.
What’s more, each pin possesses its own VCC and GND, which brings a higher compatibility to the board and provides
more opportunities for extended learning of other modules.
Modules Introduction
11
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