Search for the RCW-0001 ultrasonic sensor, it works with 3v3 - 5v.
@MaBe started
Espruino is a JavaScript interpreter for low-power Microcontrollers. This site is both a support community for Espruino and a place to share what you are working on.
Search for the RCW-0001 ultrasonic sensor, it works with 3v3 - 5v.