Schematic for hardware connection HC-SR04

[garvarma]

Hi,

Today i was trying to connect a HC-SR04 to the nodemcu using esp easy firmware. Well after some test that didn't worked well, at the end i found a schema how to connect both devices and now i have values

So please can some administrator update this info (image) to the wiki of HC-SR04 like the DHT22?

http://www.esp8266.nu/index.php/DistanceSensor

[Haggycz]

Hello, thanks for this post ... i was not able to run it but your layout was great help for me..

@Admins: please, update Wiki HC-SR04 with this diagram ...its realy helpful!

[parbar]

Also mention that there is HC-SR04+ that runs directly of 3.3 volts.