Having your Arduino control higher-power devices like lights, motors, pumps, doors, and many more is one of the most interesting and useful applications you may get involved with. But it can be a little difficult and possibly dangerous when power line voltages are being controlled. There are significant differences in controlling AC power compared
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to DC. And there are considerations about different kinds of loads and so forth. This section will cover many of these subjects, show several available devices you can connect to Arduino to control power (examples above), and provide examples of working projects. (Please direct questions, critiques and suggestions to: terry@yourduino. com ) NOTE: Sometimes switching lights, motors, etc. with relays can cause Electromagnetic Interference (EMI). More information about what to do in these cases is available HERE: Get your Arduino plugged into your main computer, and download the Good Old Blink Program. If you need help getting started, go here. You should have the LED on your Arduino blinking ON for 1 second, OFF for 1 second. If you`re pretty familiar with those words and ideas, fine. But if you`d like to learn a little more before we continue, jump over here and then come back. Plug small wires or pins on the ends of wires into the Arduino and then into a "Solderless Breadboard" where other devices can be plugged in and connections made. (Example) Plug a circuit board (usually called a "Shield") on top of Arduino, plugging into most or all Arduino pins. These Shields are usually special-purpose add-ons to Arduino to do things like control robot motors, connect to the Internet, etc. (Example). Plug a special "Sensor Shield" (Example) on top of Arduino. Then you can easily plug cables and other devices into all the Arduino...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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