Sonic Wave Code

[Brook Mithani]

Im currently building a fountain that reacts to movement, to experiment with the ultrasonic sensor (HC-SR04) I tried a lot of different codes but every single one of them was giving me a constant output of 0. Then I stumbled upon this code and it read the distance correctly:

But now I need to combine this with my project, and I'm very new to this so I need your help. I did this lesson in Tinkercad and I want to use this code and setup to power my motors. I know how it will work with motors and transistors but i want to test it with simple LED's first. Below is the image and code:

It will turn on the LED's on and off depending on the distance of the object to the ultrasonic distance sensor. But it still reads the value as 0cm and 0in, so how do I combine the two codes so that I get the right readout?

I know what you mean and I have to go with what works, but the function of the lower code (reading out the distance and setting another pin (which will be an LED) to high is what I need, but my sensor is not working with that code, but it IS working with the top code. So I need to merge the first one into the second one so that the second one will work.

my plan is to control the stepper motor using the ultrasonic sensor.

if the distance is more than 20 cm, it should moves to the left (DIR HIGH).

if the distance is less than 20 cm, it should moves to the right (DIR LOW).

@adhityaj, your topic has been moved to a more suitable location on the forum. Installation and Troubleshooting is not for problems with (nor for advise on) your project See About the Installation & Troubleshooting category.

That function is indeed problem. As it stands it will never start the motor because it looks only once at the millis counter, and if it has not advanced enough it will simply return. It needs to wait until the time has expired and then give a pulse. Your use of millis here is wrong it might as well be a simple delay.

If not;

Have you developed your code in stages?

Have you written code that JUST tests the ultrasonic and displays the result in the IDE monitor?

Have you written code that JUST makes your stepper move back and forth.

Have you written code that JUST reads your limit switch and displays the result in the IDE monitor?

The problem would seem to be that both the stepping and the distance sensor needs to be written as a state machine in order for it to multitask successfully.

You are using pulseIn which is blocking code.

That is the maximum speed you can generate pulses for your motor. If the motor will move that fast is another matter. That depends on a lot of factors, like the stall torque and the load on the motor as well as how it is powered.

With a stepping motor the faster you pulse it the lower the torque is. The torque is a maximum when it is not moving. You can pulse it so fast that there comes a point where the actual torque is below the stall torque and then it will not move any more.

In this tutorial we will learn how the HC-SR04 ultrasonic sensor works and how to use it with Arduino. This is the most popular sensor for measuring distance and making obstacle avoiding robots with Arduino.

I have already used the HC-SR04 ultrasonic sensor for building several cool Arduino projects and you can check them out here:Arduino Radar (Sonar)Range Measurer and Digital Spirit LevelSecurity and Alarm System ProjectArduino Ant Hexapod RobotYou can watch the following video or read the written tutorial below. It has additional information and examples for the sensor, including specifications, pinouts, wiring diagrams, codes and more.

If there is no object or reflected pulse, the Echo pin will time-out after 38ms and get back to low state.If we receive a reflected pulse, the Echo pin will go down sooner than those 38ms. According to the amount of time the Echo pin was HIGH, we can determine the distance the sound wave traveled, thus the distance from the sensor to the object.For that purpose we are using the following basic formula for calculating distance:Distance = Speed x Time

Hey, well you would need to measure three dimensions, width, length and depth and multiply them to get the volume. Check my Arduino Range Measurer project where I showed something similar, or how to measure area using this sensor.

Thanks for the clear explanation. Still I dont understand. The counting starts when echoPin (input) gets the state HIGH (in this example). And the counting stops, when it gets the state LOW. Their time difference is 10us in the pingPin and their time difference is 10us in the echoPin. It is always the the same. The distance doesnt make any difference. The begin of the signal is moving as fast as the end of the signal. What actually starts the counting. It has to start, when the signal goes to pingPin. And it has to stop, when the signal come sback to echoPin. Would You please explain me more.

Hi there. Well sorry but all I can say is to check my tutorial on app inventor and in combination with this tutorial, make the project on your own.

My work is teaching the basics of a particular sensor, module or a program, and your are that one that should use the knowledge gained from those tutorials to make a specific project.

Cheers!

Dear, it possible the ultrasonic can detect the water leakage on the water pipe? mean the ultrasonic can receive the frequency or other value to show that when the water pipe has leakage, the value will changing? thanks

Dear,

I have an idea to measure the amount of water in a water tank.

It has been seen on your video experiment to Motion Sensor.

Question: Is it possible to transfer centimeter change in the screen to a percentage, for example 40%, 50%.

Thank.

Rakan

Dear Dejan, I am building a simple robot with this sensor. The problem is this: I want to avoid a collision at a distance of about 50 cm. How do I implement in code this value in the simple software I made. (the robot is programmed to drive an eight) with simple code as digitalWrite HIGH or LOW on two pins.Regards, Ton.

Can u email me or update the diagram of this project by adding the connections for the 162 lcd green screen ty in advance this website was a real help to me as my first arduino project and I use arduino uno is that OK or I have to change something in ue given project waiting for a quick response:)

The problem might be that you are using Arduino DUE, which has 3.3V pins and the ultrasonic sensors is working with 5V. Try using an resistor at the echo pin, as the 3.3V are fine for the Trig pin, but the Echo pin of the sensor will output 5V to your Arduino DUI which might damage it.

Waveform Audio File Format (WAVE, or WAV due to its filename extension;[3][6][7] pronounced /wv/ or /weɪv/ [8]) is an audio file format standard for storing an audio bitstream on personal computers. The format was developed and published for the first time in 1991 by IBM and Microsoft. It is the main format used on Microsoft Windows systems for uncompressed audio. The usual bitstream encoding is the linear pulse-code modulation (LPCM) format.

WAV is an application of the Resource Interchange File Format (RIFF) bitstream format method for storing data in chunks, and thus is similar to the 8SVX and the Audio Interchange File Format (AIFF) format used on Amiga and Macintosh computers, respectively.

Though a WAV file can contain compressed audio, the most common WAV audio format is uncompressed audio in the linear pulse-code modulation (LPCM) format. LPCM is also the standard audio coding format for audio CDs, which store two-channel LPCM audio sampled at 44.1 kHz with 16 bits per sample. Since LPCM is uncompressed and retains all of the samples of an audio track, professional users or audio experts may use the WAV format with LPCM audio for maximum audio quality.[9] WAV files can also be edited and manipulated with relative ease using software.

On Microsoft Windows, the WAV format supports compressed audio using the Audio Compression Manager (ACM). Any ACM codec can be used to compress a WAV file. The user interface (UI) for Audio Compression Manager may be accessed through various programs that use it, including Sound Recorder in some versions of Windows.

Beginning with Windows 2000, a WAVE_FORMAT_EXTENSIBLE header was defined which specifies multiple audio channel data along with speaker positions, eliminates ambiguity regarding sample types and container sizes in the standard WAV format and supports defining custom extensions to the format.[4][5][10]

A RIFF file is a tagged file format. It has a specific container format (a chunk) with a header that includes a four-character tag (FourCC) and the size (number of bytes) of the chunk. The tag specifies how the data within the chunk should be interpreted, and there are several standard FourCC tags. Tags consisting of all capital letters are reserved tags. The outermost chunk of a RIFF file has a RIFF tag; the first four bytes of chunk data are an additional FourCC tag that specify the form type and are followed by a sequence of subchunks. In the case of a WAV file, the additional tag is WAVE. The remainder of the RIFF data is a sequence of chunks describing the audio information.

The advantage of a tagged file format is that the format can be extended later while maintaining backward compatibility.[11] The rule for a RIFF (or WAV) reader is that it should ignore any tagged chunk that it does not recognize.[12] The reader will not be able to use the new information, but the reader should not be confused.

The specification for RIFF files includes the definition of an INFO chunk. The chunk may include information such as the title of the work, the author, the creation date, and copyright information. Although the INFO chunk was defined for RIFF in version 1.0, the chunk was not referenced in the formal specification of a WAV file. Many readers had trouble processing this. Consequently, the safest thing to do from an interchange standpoint was to omit the INFO chunk and other extensions and send a lowest-common-denominator file. There are other INFO chunk placement problems.

3a8082e126