The Adafruit Circuit Playground Express is a sensor-packed development board which supports four languages: block-based Makecode (similar to MIT’s Scratch), Makecode javascript, CircuitPython and C. The HC-SR04 is an inexpensive distance sensor based on a pair of ultrasonic transducers with a straightforward TTL interface. This is a simple example demonstrating distance measurement in Makecode inspired by the BBC micro:bit example.
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