Hookup Guide:
Connect the KEYES-2812-18Rmodule and HC-SR04 ultrasonic module to the bottom shield with F-M jumper wires.
KEYES-2812-18R module
G
V
DI
HC-SR04 ultrasonic module Micro:bit shield
GND
Echo
Trig
VCC
Micro:bit shield
G
V
D5
G
D15
D14
5V
14
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