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“Step up DC-DC converter is based on LM2577-ADJ IC, this project provides 12V output using 5V input, maximum output load 800mA. The LM2577 are monolithic integrated circuits that provide all of the power and control functions for step-up …
“Over 3 years ago, I published a simpel TRIAC AC dimmer for the arduino. That proved to be a very popular design. Yet in spite of the simplicity of the circuit the software needed was a bit complicated as it …
“I have always wanted to add ambilight to my TV. It looks so cool! I finally did and I was not disappointed! I have seen many videos and many tutorials on creating an Ambilight system for your TV but I …
“Use an arduino to activate relays for opening garage doors and electric door locks. A customizable Android App, connects to arduino via password protected bluetooth pairing. A bluetooth hc-05 module receives commands from an android phone to open doors and …
“Switching an AC load with an Arduino is rather simpel: either a mechanical relay or a solid state relay with an optically isolated Triac. (I say Arduino, but if you use an 8051 or PIC16F877A microcontroller, there is stuff for …
“This device reads hand keyed Morse code from a signal key (or an ordinary switch) and translates it to plain text and show the Morse code you’re keying on an LCD. I use it to train my own Morse …
“This is an automatic “monitor brightness controller” based on environmental light conditions. This system use USB port base sensor unit to measure the light level and control monitor brightness accordingly. We design this system to reduce the eye stress by …
“In the market of robot,there are plenty of smart avoidance robot kit for sale,but I don’t like to buy finished kit, to develop old rc car toys in storage box is more challenge.Building an avoidance robot …
“For this project I’ve used 12AX7 vacuum tube. This tube is one of the most used for the guitar preamplification. So there are many resources available on web. The first problem i faced it’s the power stage. Tubes …
“Its a common occurrence in any office youre on Facebook or browsing SparkFun when all of a sudden your boss walks in to see that youre not working. This project aims to avoid that embarrassment and frowns from management. The …