Banggood

Parecem muito bons na qualidade, não testei ainda, o melhor que recebi em 20 dias em Rondônia, Bangoog é a melhor na qualidade de entrega....

All the pins are looking perfect and not bent!!! That’s great and I’ve tested the components, they work!!!

nice

Cheap and very useful for DIY robots.

Fast delivery from UK warehouse. Works as expected. Quality is ok. I recommend.

Good.

The HC-SR04 sensor has 4 pins: Vcc (+ 5V), Trigger, Echo, GND. It sends a high pulse on the Trigger pin for at least 10 microseconds, at this point the sensor will send the sound ping and wait for the return of the reflected waves, the sensor will respond on the Echo pin with a high pulse of the duration corresponding to the travel of sound waves , after 38 milliseconds it is considered that no obstacle has been encountered. For safety we generally expect 50-60 millisecs to ensure that there is no

Ein Teil dieser Ultra Sonic Senoren habe ich bei meinen Roboter Projekten ein gesetzt. Da leisten sie ausgezeichnete Dienste. Das Modul ist passgenau gearbeitet und fügt sich ohne Probleme in die Bausätze ein. Empfehlenswertes Produkt. ------------------------------------------------------------------------------------------------- I have used a part of these Ultra Sonic Senoren in my robot projects. They do an excellent job. The module is made to fit perfectly and fits easily into the kits. Recommended

Very nice set of ultrasonic sensor modules. Easy to use and connect.

fast delivery nice soldering work very satisfied