I’m looking into buying my first original Arduino (not chinese clone) and I’m interested in YÚN. Easily enough, it is because it has LAN, WiFi and “Uno” together for a great price (I think).
Actually the AVR side is not like an UNO but like a Leonardo
- Can Linux side be used as WiFi <-> LAN router (it should)?
Yes, it runs Linino which is OpenWrt with some additions, OpenWrt network setups are cryptic to me but it is definitely very powerful as a router system.
2. Can I have sketch like measuring temperature/reading analog voltage/whatever and output it’s info through Linux side (ie.) as replies to HTTP/SNMP requests?
Yes, the bridge library(AVR)/bridge python script(Linino) is one of the additions and allows communication between the two systems.
3. If previous is “yes” - is it easy enough so that your mother can do it? Is it that easy like using Serial functions?
No, my mother definitely couldn’t do it, maybe yours could. Take a look at some of the examples, you can download the IDE and look at all the code without any hardware.
4. What I/O pins are used by communcation between Linux and ATmega?
They talk over a serial connection at 250,000 baud. Serial1 (Pins 1 & 2) on the AVR, /dev/ttyATH0 on Linino.
Don’t forget that you have a USB device connection to the AVR, and a USB host on the Linino side, this thing has more connections that I have stuff to plug into!