Content for 2N2222

Battery Hero (aka Cutout Switch)

“Last year I brought a thermoelectric cooler for camping. These aren’t the best for cooling items down from room temperature but they will kept items cold if they come out of a fridge. The big issue is that the …

Turn a Keurig Coffee Maker into a Miniature “Raspberry Pi Greenhouse”

“Recently, my wife’s many-years-old Keurig stopped working. Like any engineer/hacker/maker, my first instinct was to poke around, clean out certain parts, etc. to see if I could fix it, and after some time I did get coffee …

DIY 3D Printed Single Digit Arduino Clock

“One Big digit , fully functional Arduino Nano clock”

Arduino Based Voice-Controlled IOT Relay Switch (Google Home & Alexa Supported)

“This project describes how to make an Arduino-based, voice-controlled, IOT relay switch. This is a relay that you can turn on and off remotely using an app for iOS and Android, as well as tie it in to IFTTT and …

RFID Smart Door Lock With ESP8266

“In this video I am going to show you how to build your own access control system with RFID and Arduino + Cloud logging of attendance. It is a very good project for IoT beginners and enthusiasts, hope you like it …

Cherry Remote

“I’ve got a TV in my garage that I use to test things out on, I lost the remote for it, when I did find it it had seen better days. This got me thinking that I should just …

SMART GLASSES (TV B GONE EDITION)

“After finishing the WS2812 smart glasses I thought could I use this platform for different projects. I’ve wanted to make a TV B Gone for awhile now but haven’t gotten around to it. I set the challenge for …

Easy to Build FM Transmitter

“Learn to build your own mini FM transmitter. This fun project will show you how to build a mini broadcasting device that can transmit an audio signal up to a quarter mile to any FM receiver. It’s easy to …

Time Retardant Circuit

“Hey friends, This is just a quick project Time retardant circuit without 555, in this instructable I will show how to make it step by step. Let’s Get Started!”

Enhanced ESP8266 Based WiFi Fan Speed Regulator

“This instructable will guide how to make an Ceiling Fan Speed Regulator using Triac Phase angle control method. Triac is conventionally controlled by Atmega8 standalone arduino configured chip. Wemos D1 mini adds WiFi functionality for this regulator. Featuring - 1. Both …