This page (revision-14) was last changed on 2020-06-05 22:04 by Murray Altheim

This page was created on 2020-05-24 01:48 by Murray Altheim

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Page References

Incoming links Outgoing links
Arduino Yún
ArduinoYún

Version management

Difference between version and

At line 1 changed one line
[{Image src='attach/Arduino/arduino-yun-rev-2.2.jpg' width='250' caption='Arduino Yún'}]
%%(text-align:center)
[{Image src='attach/Arduino/arduino-yun-rev-2.2.jpg' width='400' caption='Arduino Yún'}]
%%
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The __[Arduino Yún|ArduinoYún]__ is unusual in that it combines what is effectively a 16MHz [Arduino Leonardo|https://store.arduino.cc/usa/leonardo] microcontroller with an [Atheros AR9331|https://www.openhacks.com/uploadsproductos/ar9331_datasheet.pdf], a 400MHz microprocessor running OpenWrt (a version of [Linux|https://en.wikipedia.org/wiki/Linux]), so it's a bit like a combination of an [Arduino] and a [Raspberry Pi] on one board the size of the Arduino Uno.
The __[Arduino Yún|ArduinoYún]__ (''Yún'' which means "cloud" in Mandarin) is unusual in that it combines what is effectively a 16MHz [Arduino Leonardo|https://store.arduino.cc/usa/leonardo] microcontroller with an [Atheros AR9331|https://www.openhacks.com/uploadsproductos/ar9331_datasheet.pdf], a 400MHz microprocessor running OpenWrt (a version of [Linux|https://en.wikipedia.org/wiki/Linux]), so it's a bit like a combination of an [Arduino] and a [Raspberry Pi] on one board the size of the Arduino Uno.
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Here's some miscellaneous notes regarding the Yún (which means "''cloud''" in Mandarin).
I was [interested in [connecting the Yun to a motor shield or a Zumo|ArduinoYúnInterfacing], so I contacted Adafruit, Arduino.cc and Pololu, the latter makes the Zumo to get some help.
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!! Notes
Here's some miscellaneous notes regarding the Yún.
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!! OS Installation Notes
Despite being a 400MHz processor and being connected directly via an ethernet cable, it is good to remember that the AR9331 on the Yún is still quite a small computer. It's not as fast as a Raspberry Pi (a Pi 3 B+ runs at 1.1GHz) and you can run out of memory (and need to reboot) sometimes.
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# opkg install tcsh
# opkg install vim-full
# opkg install tcsh blkid vim-full vim-runtime
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The {{tcsh}} is just a personal preference, rather than using the native bash shell.
The {{tcsh}} is just a personal preference, rather than using the native bash shell. With the customised prompt (below) I get a nice colorful prompt. And yes, it's possible to do this with bash, but tcsh has a lot of nice features that I'm accustomed to. The {{blkid}} was used for setting up a swap memory space but is otherwise unnecessary. {{vim-full}} replaces the very-minimal version of the {{vi}} editor already included.
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The Yún comes with Python 2 but I want to use Python 3, so I'll be installing vim, tcsh, Python3, and pip3. The {{python3}} package installs the entirety of Python 3, so it seems {{python3-light}} is meant to generally suffice for most people. Based on the difference in install times, it's significantly smaller.
The Yún comes with Python 2 but I want to use Python 3, so I installed Python3 and the python package installer program {{pip3}}. The {{python3}} package installs the entirety of Python 3, so it seems {{python3-light}} is meant to generally suffice for most people. Based on the difference in install times, it's ''significantly'' smaller. Install pip3, upgrading the setuptools, smbus2 (for I²C support), etc.:
{{{
# pip3 install --upgrade setuptools
# pip3 install smbus2
# pip3 install python3-yaml
}}}
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When installing {{git}} you'll also need {{ca-bundle}} in order to be able to handle {{https:}} URLs.
{{{
# opkg install ca-bundle git git-http
}}}
After that you should be able to perform a {{git clone}} successfully.
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* [Getting Started with the Arduino Yún Rev. 2|https://www.arduino.cc/en/Guide/ArduinoYunRev2]
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* [Running out of memory on yun rev 2 while trying to install sdk|https://github.com/aws/aws-iot-device-sdk-arduino-yun/issues/72] tells how to "increase available memory" by adding swap space
This page (revision-14) was last changed on 2020-06-05 22:04 by Murray AltheimTop