HC-SR04

[medelec35]

Hi Jorgen.
I have replied to the bmp180 post.

[ELECTRONICA67]

Sorry I made a mistake when writing down the information.

Read reading: 55 cm Actual distance: 89 cm
Read reading: 30 cm Actual distance 50 cm

The phase shift is not constant: 20 cm and 34 cm

Enrique

[ELECTRONICA67]

Hi Martin and Jorgen,

A previous post was not published where I explained that I had done tests with both sensors, the waterproof and the classic HC-SR04, with both having equal distance readings, but the distance read was wrong, example of readings on the sensors:

1) sensor reading: 55cm --- correct distance: 89cm (error:34cm)
2) sensor reading: 30cm --- correct distance: 50cm (error:20cm)

(error distance is not the same in different distance)

Enrique

[jgu1]

Hi Enrique!

I guess that the sensor you use is the waterproof, black an one transduser: This Transduser need a 20uS trig. The HC-SR04 Module as Martin have created a FC component for, give only 10uS trig, it will not work correct with the Waterproof..

If you use the waterproof and you have an Arduino Uno or ect. try to download my testprogram and change the trig from 10uS to 20uS, or you can copy from mine, then it work, at least here by me at the moment. My program is only a testprogram, don´t care with the "temp reading".

Hopefully Martin will edit the component in FC so we via proporties or a new component is able to choose devices

Br Jorgen

[medelec35]

Hi Enrique & Jorgen.
I was going to modify the component tomorrow, but I had a few minutes spare so I have updated it now.
The component modification will be pushed onto the update system ASAP.
If would you like to test before then, Browse to this location using File Explorer, it's hidden by default so just paste the link into your address bar.

Code: Select all

C:\ProgramData\MatrixTSL\FlowcodeV10\Components

Replace the existing file with the attached file.
If Flowcode is already open, then you will need to reload your project for the new components to work
If you run any component updates, then the components you added will be overwritten.
Can you let me know if it works for you, please?

I have just tested the HC-SR04 and its reported distance is within 1cm of the expected value.

[jgu1]

Hi Martin!

Working so perfect, thank you very much

In my new testprogram I use an Arduino Mega.

Br Jorgen

[medelec35]

Hi Jorgen.
Thanks for letting me know.
I have made a minor change, so the selected sensor is displayed on the sensor.

[jgu1]

Very nice Martin, push it to update

Br Jorgen

[jgu1]

Hi Martin!

After update I cannot choose device anymore, have you take the wrong?

[medelec35]

Hi Jorgen.
I don't believe the update has been pushed yet.
By running the updates, you have gone back to the version previous to my update.
You will need to manually add the component again.
I will let you know when the update has been pushed.