tmux and the arrow keys

If the arrow keys do not work, try setting the environment variable TERM to "xterm-256color".

This should solve the issue!

USB serial devices and Arduino Yun

How to use USB serial devices on an Arduino Yun

You have a device send serial data via USB like an Arduino UNO, Leonardo or similar?
You need to run:

opkg update
opkg install kmod-usb-serial
opkg install kmod-usb-acm

After that you should find  that device as "/dev/ttyACM0".

MOnSter 6502

See this cool device

https://youtu.be/FzWwUPkSEvs

7 Segment Displays controlled with a SAA1064

https://github.com/mymaestro/Arduino-projects/tree/master/SAA1064-library/libraries/SAA1064

The SAA1064 Chip can be used to control up to four 7 segment displays using I2C.

The default address is 0x70.

The link above can be used to get a library to control that chip with very little effort.

Cool Emulation Site

http://copy.sh/v86/

Google Product Forums

https://productforums.google.com/forum/#!home

Very useful if you have questions about Google products

javascript beautify

Cool tool to beautify js code:

js-beautify

You will need Python and pip installed. Then do:

pip install jsbeautifier

Maybe you need to start pip with sudo.

Then you can do:

js-beautify file.js

without parameter you will get help.