The document discusses using OpenWRT on an AR9331 32u4 (Leonardo) board. OpenWRT can turn the board into a wireless router and access point that connects local devices like a keyboard, mouse, and printer to the internet. It can also run services like a web server, store files, install packages, and connect to web APIs for applications like smart sensor networks and remote control.

2. OpenWRT on
AR9331
32u4 (Leonardo)

3. 
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5. Local
Network
Internet

6. Mouse
Keybo
ard
Scann
er
Webca
m
Printer
USB
Drive

7. Store
filesLog Data
Install
packages

8. Web
server
Cron
jobs
Scripting
Scraping

9. Act as a
wireless
hotspot
Mobile
installatio
ns

10. Connect
to web
APIs
Log data
wirelessly
Smart
sensor
networks
Remote
control

11. COM port
(Wired)
WiFi
32u4

12. Ethernet
(Wired)
WiFi
AR9331

13. 32u4AR9331
Process
Console
FileIO
HttpClient
Mailbox
YunClient
YunServer
Temboo

14. Key1 Value1
Key2 Value2
Key3 Value3
AR9331
32
u4