B4J Question [Solved] Adafruit DC and Stepper Motor HAT for Raspberry Pi

[Mark Read]

Can anyone help with which libraries or code I need to control a DC Moter as detailed here:

https://learn.adafruit.com/adafruit-dc-and-stepper-motor-hat-for-raspberry-pi/overview

I plan to run a headless RPi with a B4j app, controlled via a B4A app and bluetooth.

Edit: Just found this, is this correct?

https://www.b4x.com/android/forum/threads/iot-jpi4j-raspberry-pi-gpio-controller.37493/

Many thanks.

 

[Erel]

jPi4J is a wrapper for Pi4J library.

Adafruit library looks quite simple: https://learn.adafruit.com/adafruit-dc-and-stepper-motor-hat-for-raspberry-pi/using-dc-motors
You can use JavaObject with #AdditionalJar to access it.

 

[Mark Read]

Sorry to bump this old thread but I understood that to use the #AdditionalJar function, I need the libraries as jar files.
I cannot see them on the Github page here. There are only libraries for Python. Have I missed something?

Many thanks.

 

[Erel]

Seems like it is a Python library. You will not be able to use it from B4J.

Note that you can interact with python programs: https://www.b4x.com/android/forum/threads/rpi-piface-control-and-display-cad.62610/#content

 

[Mark Read]

Not quite the reply I had hoped for Erel -

But I have just found this - not knowing anything about java. Any use?

This as well.

 

[Erel]

This is a Java project. However you will need to create a wrapper in order to use this code.

Note that B4R (Arduino) does support all these features.

 

[Mark Read]

Thank you for your reply Erel. B4R is not an option for me and I cannot create a wrapper.

Does anyone know of a board/hat which IS supported by B4J, works on the RPi and can control a DC motor or a step motor? My last hope.

 

[Mark Read]

Posted a workaround solution here ( Post#12) in the tutorials forum.