Using lua on openwrt OLIMMEX RALINK dev board.

• RT5350F-OLinuXino-EVB
• 32 MB Ram, 32bits cpu ,( MIPS, openWrt linux )
• 15 $ (!) ( 10 $ Soc CPU)
• https://www.olimex.com/Products/OLinuXino/RT5350F/RT5350F-OLinuXino-EVB/open-source-hardware

IO are :

• 2 ethernets port
• wifi acces point
• one GPIO connector and one UEXT connector
• 2 relay 220V 10A
• one press buton

Preinstalled software on the board are :

• Openwrt, busybox, ssh (to be activated by wifi), lua

• lucid : web server, admin web application, in Lua

• nixio : a little framwork for socket communication, process managemant, file/directory access doc

• noting else...

• no realy docummentations on Lua part!

Here, there are working:

• io.lua : read button, blink relay1. (with files acces on /sys/class )
• iopoll.lua : TCP socket server, for read / write relay1/relay2 via lan/wan

access to all GPIO of the board direct acces to GIO (without /sys/class/ file management !)

Free, as libre !