Subhra's Lab

Insights on different Embedded & Internet technologies like Android, Nodejs, Firebase, esp8266 etc. Projects like reading from and writing to google sheet using esp8266 devices, putting math symbols in your web sites, setting up your own wamp stack (each component separately) on your local pc, extracing hex code from unicode char code, developing firebase messaging system for your users android devices using nodejs server etc are described elaborately. More projects to come..

Friday, 22 December 2017

Propeller Display

Circuit Design for Propeller Display

Propeller Display Circuit layout(for PCB)

Subhra's Philosophy.

Propeller Display

Propeller Display Demonstrated...

A string of text is displayed with single led column consisting eight leds. Each letter of the text is plotted within a 6x7 matrix. The led column is representing each column of the letter matrix for a certain millisecond of time as the circuit board is rotating along with the blade of a fan. After that time interval the column of leds are switched off and again switched on selected leds according to the distribution of each comumn of polled matrix. Due to the persistance of vision it is appeared as a text before us.

Subhra's Philosophy