Content for 2N2222A

Building an Infrared Transmitter and Receiver Board

“Most remote controls for your TV, cable box, Blu-ray player or other consumer electronic devices use infrared signals. IR is also an inexpensive and effective way to control a variety of maker projects. IR is especially useful in creating assistive …

Remote Controlled Computer Desk

“Recently I’ve encountered an issue, that my laziness became tremendous problem for me at home. As soon as I go to bed, I like to put some nice LED powered light with some series playing on my PC. But …

Building your own 555 Timer IC

“The 555 Timer IC is one of those evergreen and versatile ICs that finds place in every common place electronics applications. What does it do? It generates a square wave used in timing applications and many other fields. It mainly …

$3 Smart Bulb Holder

“Most of the time I realized the necessity of controlling my room light from my bed. I can replace the bulb with a smart bulb but they are expensive. Some cheap solution is available using remote control but for this …

How to Make an Automatic Wood Stove Thermostat

“For my Mechatronics Class Project I decided to design and create an Automatic Wood Stove Thermostat using a WiFi enabled Arduino with a PID controller driving a Stepper motor to control the damper position on my Wood Stove. It has …

Vibrating Watch to Remind Wearer Not to Waste Time

“Everyone knows that time is both fleeting and limited. And yet we still forget this simple truth and continue to waste time on unimportant things. I created a watch that would vibrate every 5 minutes to constantly remind me to …

Portable Function Generator on Arduino

“Function generator is a very useful tool, especially when we are considering testing our circuit’s response to a certain signal. In this instructable I’ll describe the building sequence of small, easy to use, portable function generator. Features of …

CNC Cyclone PCB Factory, My Way, Step by Step.

“I’d like to renew my cnc for PCB so I decide to create new one from an existing project named Cyclone PCB Factory. You can find the original project here. (I know I need to buy a good webcam …

Weather Forecast Clock Using Old Alarm and Arduino

“I had a broken alarm clock lying around and came up with an idea to convert it to clock and weather forecasting station. For this project you will need: Old circular alarm clock Arduino Nano BME280 sensor module (temp, humidity …

How to Make a Mini Tesla Tower

“The concept of wireless electricity was introduced around 100 years ago and even today, it is one of the most fascinating and exciting topics for scientific research & development. It was the great scientist Nikola tesla, who actually demonstrated the transmission …