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Raspbian desktop support ? using gpio expander tool  

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mario
(@mario)
New Member
Joined: 5 months ago
Posts: 2
January 5, 2020 12:34 am  

Hi,

Does anyone have any expereince running mycodo through a desktop install of raspbian and using the gpio pins of a Pi Zero through Gpio Expander tool ?

https://www.raspberrypi.org/blog/gpio-expander/

I would like to leverage the processing power of a few old laptops I got and after reading about the desktop raspbian os, felt like this is a viable solution.

Anyone care to comment ?


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Kyle Gabriel
(@kylegabriel)
Member Admin
Joined: 5 years ago
Posts: 193
January 8, 2020 4:23 pm  

Mario,

With the addition of Docker support for Mycodo, it's possible to install and run Mycodo on a PC, however the GPIO Expander tool is not likely to work out of the box for Mycodo. I'd recommend installing Mycodo on the Pi Zero and see if it suits your needs.

We can continue this discussion here, or your github issue (link for reference: https://github.com/kizniche/Mycodo/issues/730)

Mycodo Developer


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mario
(@mario)
New Member
Joined: 5 months ago
Posts: 2
January 8, 2020 11:25 pm  

It doesn't matter to me, but I do like your idea of separating issues and non issues, so this forum makes sense.  Unfortunately, not many people are on this forum, maybe github users don't know about it.

I know nothing about programming let alone troubleshooting and debugging, so I won't be trying the desktop version.  There aren't enough gpio pins on a pi for my needs, so I was thinking using a laptop for the increased power and ability to add 140 gpio to it. 

I know I can use I2C multiplexers but I'm kinda cautious about attempting to connect many layers of the multiplexers onto a single I2C pin from the pi.


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Kyle Gabriel
(@kylegabriel)
Member Admin
Joined: 5 years ago
Posts: 193
February 26, 2020 4:14 pm  

Could you describe your use, because I'm having a hard time understanding how you could use all GPIO pins of a Pi, let alone need 140+. Perhaps there's an easier/more elegant solution than what you're designing that could reduce resources yet still accomplish the same goal.

Mycodo Developer


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Kyle Gabriel
(@kylegabriel)
Member Admin
Joined: 5 years ago
Posts: 193
February 26, 2020 4:22 pm  
Posted by: @mario

I know nothing about programming let alone troubleshooting and debugging, so I won't be trying the desktop version.

You don't really need any knowledge of programming to install and use Mycodo on a Raspberry Pi. The Pi 2, 3, and 4 are capable of running the desktop version of debian Linux, which is easy to install (download a img file, flash to SD card, inset into Pi, boot) and with a monitor, keyboard, and mouse, it will book directly to a graphical interface. Installing Mycodo from there is just one command to copy and paste into a terminal. Then you can open a web browser to https://127.0.0.1 from the Pi and you're using Mycodo. I wouldn't recommend using the Pi Zero with a graphical interface.

Mycodo Developer


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