But... you need a special HC-SR04P to handle 3.3V logic. Although, I just stumbled across this hack to make a regular HC-SR04 work. Have to give that a try.
https://www.instructables.com/Modify-Ultrasonic-Sensors-for-3-Volts-Logic-prepar/
w/ GUI Admin Client, Drag & Drop File Manager, OTA Built-In, Access Point Manager,
Performance Metrics, Web Socket Comms, App API, All running on ESP8266...
Even usable on ESP-01S --- Please check it out!
https://inqonthat.com/inqportal-the-three-line-promise/
https://InqOnThat.com/inqportal