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Read Data from a 4*4 Switch Matrix using 4 Digital Outputs (instead of 8) of Arduino    http://www.haberocean.com/2015/05/circuit-for-44-button-keypad-using-74165-and-74595-part-1/

Read Data from a 4*4 Switch Matrix using 4 Digital Outputs (instead of 8) of Arduino http://www.haberocean.com/2015/05/circuit-for-44-button-keypad-using-74165-and-74595-part-1/

[VIDEO] This Robot Cracks Open Combination Locks In Seconds—Wow!

This Robot Cracks Open Combination Locks In Seconds

Basically if you build for yourself you can decrease the cost plus make it bigger, smaller, custom shaped etc.

DIY LED Dot Matrix Display For Arduino Scrolling Text

Basically if you build for yourself you can decrease the cost plus make it bigger, smaller, custom shaped etc.

Create Your Very Own Thermal Imaging Camera With An Arduino Nano (Video) - The Arduino Nano thermal imaging camera has been created by user Kaptein QK over on the EEVblog community forum and uses an IR temperature gun bought from eBay. | Geeky Gadgets

Create Your Very Own Thermal Imaging Camera With An Arduino Nano (Video) - The Arduino Nano thermal imaging camera has been created by user Kaptein QK over on the EEVblog community forum and uses an IR temperature gun bought from eBay. | Geeky Gadgets

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