2. why
● cheap, off the shelf
● familiar software
● connectivity
● extensible
3. use cases
● wireless gateway/router
○ wifi stations/mesh apart from ap
○ other wireless on USB etc.
○ one off mod ↓
4. modules
● custom boards around SoMs
● same software, expanded peripherals
● serial, USB, SPI, I2C, i2s, GPIOs
5. OpenWrt
● customizable linux distribution for space constrained
devices
● ‘flashable’ f/w for supported devices
● image is kernel+squashfs+jffs2
● based on buildroot/uClibc
● Many system programs are provided as busybox
symlinks
6. OpenWrt
● based on http://buildroot.uclibc.org/
● easy to modify text based config(UCI)
● example:
config 'wifi-iface'
option 'device' radio0
option 'network''lan'
option 'mode' 'ap'
option 'ssid' 'MyWifiAP'
option 'encryption' 'psk2'
option 'key' 'secretkey'
● tools/configs available for:
○ firewall, dhcp, networks, wifi, ssh,
system(ntp, LEDs)
11. ● Delhi open hardware http://tinyurl.com/delhioh
● Delhi makers http://delhimakers.org
Also, Vivek Iyyer and me are going to do some experimentation with EEG, and
we’ll build some Openbci kits, at:
Ardubotics Makerspace, run by Himanshu Bablani
(near Qutab Minar metro station)
People are welcome to join, or start something else too.
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