HC-SR04 Ultrasonic Sensor without arduino

[rajaram04]

Hello All

I want to design an ultrasonic sensor system with HC-SR04 Ultrasonic Sensor but without use of Arduino or any microcontroller !!
Is it possible ??

If yes then how ?? please help me with proper circuit configuration !! Thanks

 

[danadakk]

Yes you can use w/o a micro, but that complicates your design.

Describe the overall application you are trying to achieve, what you will do with
output data.

At its most basic level this is what its signals look like -

Out of curiosity why not use a micro ?

If you have not programmed you can do this with block programming -

Or use mBlock, another block programming language.


Regards, Dana.

 

[betwixt]

I agree with Dana, a micro would be far better suited to this task. It doesn't have to be Arduino, almost any MCU can do it.

To do it purely in hardware you need an oscillator to produce the cycles within the burst, a timer (or monostable) to decide the length of the burst and an oscillator rapidly clocking a counter to find the time before the echo returned. There would also be some logic to coordinate these processes and read the the counter back so you can use it's value.

Brian.

 

[danadakk]

The HC04 generates the pulse train on trigger.

How HC-SR04 Ultrasonic Sensor Works & How to Interface It With Arduino

Learn about HC-SR04 Ultrasonic Distance Sensor module. This tutorial includes working, Pinout, Specs, Datasheet, Wiring, Library, Code & Arduino Project.

lastminuteengineers.com

Regards, Dana.

 

[FvM]

The HC04 generates the pulse train on trigger.

Yes, the processor-less design involves basically a master oscillator, periodic trigger generation and time intervall measurement between trigger and echo pulse output. Just a handfull of CMOS logic devices.

 

[danadakk]

Another block language you can use, mBlock 3.0. Note once you are
finished with blocks the Arduino code is generated for you as shown
in right hand window. Eg. mBlock generates the code from your block
layup.

Regards, Dana