Ultrasonic Sensor (HC-SR04) interfaced with Arduino Uno using mBlock and Arduino IDE

[@HEBECHONGBAOYUNMoe-ue9st]

hi can i ask how to slow down the servo motor ?

[@olniceprophete5845]

We didn't need to use any of the resistors?

[@ElectronicsSimplified7]

I mentioned they are for protection for the LEDs. I didnt use them as they are not necessary.

[@jammypereira9522]

No resistors needed.
Use them to protect your LED. Also please check your LED if it is functioning.

[@olniceprophete5845]

Mines isn't working I copied your tutorial but all my Arduino does is produce a dim light for my green LED

[@ElectronicsSimplified7]

Please check you connection. The HC-SR04 sensor is sensitive to Lose connections. So Please fasten your connections.

[@jammypereira9522]

Olnice, it is bcoz of the wire connections. I have this project and it is very easy working for me.

[@olniceprophete9264]

@@jammypereira9522 I connected the wires just like the video said

[@olniceprophete9264]

@@ElectronicsSimplified7 I redid it and made sure all of the connections was secure but it still just show a green dim light

[@ElectronicsSimplified7]

What is the sensor model you used?

[@vinireddy386]

how can we install in drone..?????

[@ElectronicsSimplified7]

On a drone ... Its better to use Infrared for close range. And use LIDAR for long range.
Since a drone is very noisy.

[@vinireddy386]

@@ElectronicsSimplified7 can u drop how to install in drone