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Transistor Circuits

Transistor Circuits

Using Relays with Arduino – Turning on the Lights Warning!!! This project deals with AC electricity which is dangerous if you don’t know how to treat it safely. You must treat electricity with caution. There are many books and websites about electrical safety procedures and if you’re not sure how to be safe you should read that information. The most basic advice I can give is always assume any exposed wires are live and touching them will hurt a lot at best and kill at worst. Microcontrollers are good at controlling small devices, but frequently we DIY-ers want to use them to control things that aren’t so micro. The first thing you need is a cheap extension core that you are willing to cut in half. I spliced the relay into the black wire on my power cord. The last step and the one that makes this project useful is getting the microcontroller to control this relay. In this circuit the transistor acts as a switch and it allows you to turn on the relay. Credits

Soil Moisture Sensor Probes VH400 Soil Moisture Sensor Probes Soil Moisture Sensor Probe Applications Irrigation and sprinkler systems. Moisture monitoring of bulk foods. Rain and weather monitoring. Soil Moisture Sensor Probe Features Extreme low cost with volume pricing. Other Vegetronix Products of Interest Soil Moisture Sensor Probe Pricing and Ordering Info Contact us for pricing information. Soil Moisture Sensor Relay Boards The quickest way to evaluate if the VH400 series is right for you is to also order some of our sensor relay boards. Soil Moisture Sensor Probe Specifications Soil Moisture Sensor Probe Wiring Table VH400 Soil Moisture Sensor Probe Drawing VH400 Soil Moisture sensor Drawing Soil Moisture Sensor Probe Technical Literature See our Soil Moisture Sensor Probe Application Notes for reference designs and information on how to use the soil moisture probe in larger systems. How to Get Started with the Soil Moisture Sensor Probe Soil Moisture Sensor Instructional & Promotional Videos

Electric Imp promises a simpler cheaper path to the Internet of Things Los Altos-based start-up Electric Imp is looking to make putting the "things" into the Internet of Things both cheaper and simpler with Imp - a Wi-Fi equipped card designed to connect appliances to the internet so that users can remotely monitor and control them. A similar concept to the Twine system we saw back in 2011, Imp is geared towards simple installation and works with a range of appliances. The biggest novelty here is that the card combines the power of Wi-Fi with cloud computing provided by Electric Imp, so manufacturers don’t need to create specific management software. Users can link up with other users and services online as well as monitoring the device connected with the Imp through a web-browser or smartphone. Behind the high-tech appeal of the innovation is a rather domestic story, which is just as well since it’s in the home that it will most likely be put to work. Electric Imp has announced that it will start shipping a developer preview bundle in late June.

BUILD CIRCUIT How to Build a Robot Tutorial - Society of Robots What are microcontrollers? They are what their name suggests. Today they can be found in almost any complex electronic device - from portable music devices to washing machines to your car. They are programmable, cheap, small, can handle abuse, require almost zero power, and there are so many variaties to suit every need. This is what makes them so useful for robotics - they are like tiny affordable computers that you can put right onto your robot. Augmented Microcontrollers and Development Boards In a pure sense, a microcontroller is just an IC (integrated circuit, or a black chip thing with pins coming out of it). As a beginner it is probably best to buy an augmented microcontroller. In the long term however you should build your own augmented microcontroller so that you may understand them better. Between getting a full augmented board and doing it yourself is something called a development board. What comes with the IC? So what is analog? What does this bit stuff mean for ADC?

Arduino NetServer To achieve Internet Controlled Electronics , in the other words , the main functions of Arduino NetServer are : Web Server handles the communication between your PC and Internet User. Serial Port will be the interface between your Arduino (electronics) Project and PC. This is how you control / monitor electronics from internet. With this simple homemade Web Server function , the user does not need to install any other heavy software for Web Server. The tutorial of how to make your own Web Server can be found here. There's a simple job need to be done or monitored in a remote place which you can not or do not wanna go there once a while. So make them online , then monitor and control them from the Internet! This is another example. The General Idea demonstrates here is : [ Acknowledgement ] Special thanks to Cara did the the remote control test for me from the other side of internet. Copyright © 2010 bdragon All rights reserved.bdragong@gmail.com

IXACP - Internet Controlled Vehicle IXACP stands for "Internet XBee Arduino Controlled Project". This project contains Arduino NetServer - Web Server for Internet Control , XBee - Wireless Remote Control the Vehicle , Arduino - Handle communication , Inputs and Outputs. Please also visit XRobot17 if you are interested in C/C++ windows programming , PC Game programming , Physics Simulation , and Computer Controlled Electronics(RC Car). Internet Controlled Vehicle uses Arduino NetServer to achieve online monitor / control. The vehicle with a robotic arm , can be controlled and monitored through an internet browser. XBee module for wireless control. The program with functions : serial port communication , Web Server , USB Gamepad operation. A tiny Web Server , one of the key functions of the program. The user can turn on the webcam by click the button. Overview This project is intended to remote control / monitor electronic device. The client program works on MS Windows XP system.

Learning Arduino with the Fritzing Starter Kit Welcome to YouTube! The location filter shows you popular videos from the selected country or region on lists like Most Viewed and in search results.To change your location filter, please use the links in the footer at the bottom of the page. Click "OK" to accept this setting, or click "Cancel" to set your location filter to "Worldwide". The location filter shows you popular videos from the selected country or region on lists like Most Viewed and in search results. Loading... 1 5:15 Learning Arduino Episode 001 - Electronic Basics by Fritzing Org 12,077 views 2 2:30 Learning Arduino Episode 002 -- Arduino introduction by Fritzing Org 4,678 views 3 11:32 Learning Arduino Episode 003 -- Digital Out with Blink by Fritzing Org 4,322 views 4 8:34 Learning Arduino Episode 004 -- Digital Out with SOS by Fritzing Org 2,696 views 5 15:11 Learning Arduino Episode 005 -- Breadboard Prototyping by Fritzing Org 3,882 views 12 5:48 Learning Arduino Episode 012 -- FIRMATA by Fritzing Org 2,281 views

PCB Quadrotor (Brushless) Quadrotors are the new Segways: a mesmerizing, somewhat magical, self-stabilizing platform that every tech person wants to have. You can't ride a quadrotor (well, maybe you can), but they do fly, and you can build one yourself from scratch! I helped with a previous quadrotor build (Instructable here), and after flying it I decided I wanted to make my own. More flight video in the final Step! The idea of making a PCB-based quadrotor isn't unique (see links below for other examples), and 4pcb definitely isn't the smallest (see the Picopter Instructable for a really tiny one). 4pcb is a "low level" quadrotor build, by which I mean that there are very few black box components. There are a few small changes I would make if I did a second version of the board, but overall, I think it could make a good standalone project or, even better, a great starting point for your own modifications! Multirotor Frame Kits:HobbyKingArduCopter

ArduinoToBreadboard This tutorial explains how to migrate from an Arduino board to a standalone microcontroller on a breadboard. It's similar to this tutorial, but uses an Arduino board to program the ATmega on the breadboard. Unless you choose to use the minimal configuration described at the end of this tutorial, you'll need four components (besides the Arduino, ATmega328, and breadboard): a 16 MHz crystal, a 10k resistor, and two 18 to 22 picofarad (ceramic) capacitors. Uploading Using an Arduino Board Once your ATmega328p has the Arduino bootloader on it, you can upload programs to it using the USB-to-serial convertor (FTDI chip) on an Arduino board. Uploading sketches to an ATmega on a breadboard. Minimal Circuit (Eliminating the External Clock) If you don't have the extra 16 MHz crystal and 18-22 picofarad capacitors used in the above examples, you can configure the ATmega328 to use its internal 8 MHz RC oscillator as a clock source instead. Attention This procedure works on Arduino 1.0.x software.

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