Arduino IDE ARM - Industrial Shields Ardbox Analog

I have managed to get Arduino IDE running on Raspberry Pi (I had to use V1.8.6, because V1.8.7 didn't work)
Now, how do I get "Ardbox family" installed in the board list under "Tools" on a Raspberry Pi?

I have internet connection, but Boards Manager doesn't seem to find anything Ardbox?

I do have Arduino IDE V1.8.7 running on a Windows 10 computer. It has "Ardbox family" in its list.

Another Question:

Addressing the Analog inputs on the "Ardbox Analog" (Arduino Leonardo with shield)
I am able to address Analog inputs 1 to 6 (A0 to A5)
I can't get the extra channels (7, 8 & 9) to respond properly.

The device documentation shows Analog input 7 as IO.3 and address A6.
Viewing the input value in the Serial ouput, I can see the values jump around even when the pot is stable and the values don't go from 0 to 1032, but from about 120/130 to 160/170.
I have tried recompiling as Board - Leonardo, as well as Board - Ardbox family - Ardbox Analog HF (all variations)
Some Boards just return "0" others respond as I describe above.

Does anyone have any experience with these?
I specifically need 9 Analog inputs on this particular project.

Thank you

greenfox4075:
I have managed to get Arduino IDE running on Raspberry Pi (I had to use V1.8.6, because V1.8.7 didn't work)

This is a known bug:

The workaround:
http://forum.arduino.cc/index.php?topic=568797.msg3875061#msg3875061

greenfox4075:
Now, how do I get "Ardbox family" installed in the board list under "Tools" on a Raspberry Pi?

I have internet connection, but Boards Manager doesn't seem to find anything Ardbox?

I do have Arduino IDE V1.8.7 running on a Windows 10 computer. It has "Ardbox family" in its list.

To add 3rd party hardware packages to the Boards Manager list you add a specific URL to File > Preferences > Additional Boards Manager URLs. I guess either someone else did that on your Windows computer or else you did it and forgot. Reference:
https://www.arduino.cc/en/Guide/Cores

greenfox4075:
The device documentation shows Analog input 7 as IO.3 and address A6.
Viewing the input value in the Serial ouput, I can see the values jump around even when the pot is stable and the values don't go from 0 to 1032, but from about 120/130 to 160/170.

Sounds like you aren't using the correct pin. I'm not familiar with this ardbox but on a Leonardo A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively.