HCSR04 Ultrasonic Transducer
Shows how to use an HCSR04 module to measure distances.
Warning
Ultrasonic_HCSR04 modules usually work with 5v power and TTL levels, so you NEED voltage divider or level shifter for ECHO pin.
Trigger pin is tolerant to 3.3v and should work without problems.
References
SoC support
esp32
esp32c2
esp32c3
esp32s2
esp32s3
esp8266
host
rp2040