Compact 3-in-1 Stripboard DIYduino with Integrated Sensor and L298N Motor Shield

I am presenting a compact design of a stripboard Arduino board (DIYduino) that includes a 2A motor driver and has additionally the functionality of a sensor shield. The 2-channel version cost approximately $29.43 and is more affordable compared to $39.00 for a commercially available system consisting of an Arduino Uno, $21.50, a sensor shield, $8.50, and a motor shield, $9.00. The cost can be further reduce ...

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A solar tracking automatic motorized window blind retrofit using Arduino

Buildings account for 20-40% of total energy use in developed countries. Window shades (or blinds) can help to reduce building energy use and improve visual comfort (i.e., reducing glare and increasing daylighting). A recent study showed that occupants are fairly inactive when operating manual roller shades (O’Brien et al. 2013) which could lead to increased visual discomfort and increased heating and cooli ...

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Arduino Hardware PWM for stepper motor drives

With our new project, JustAddSharks, we are very keen to support the development of open source control software for laser cutters. We are more than happy for people to modify our laser cutters, replace the control system with something suitably open source and then let us know how it goes. Realistically though we're going to have to figure these things out for ourselves so we can guide other people through ...

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Control your motors with L293D and Arduino

After long research and trial and error, I have came up to a new walkthrough regarding this nice chip, the L293D. Each project is one project and each one has its own unique power configurations, so you must be aware of the best battery choice and how to distribute voltage through your robot. I strongly advice you to read the following articles: Picking Batteries for your Robot Once you've decided on batter ...

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Relay Motor Control Circuit

Connect the Arduino outputs with 5 volt power to the relay coils. Use a separate 9 or 12 volt battery for powering the motor.  Connect the 9 or 12 volt power to the relay contacts and the motor.  Be sure to avoid connecting the 9 or 12 volt power to any of the Arduino input or output pins. Write an Arduino sketch to run the elevator up and down in the center of the “hoistway” for a fixed length of time in e ...

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DC Motor Control Using an H-Bridge using arduino

Overview In this tutorial, you'll learn how to control a DC motor's direction using an H-bridge. To reverse a DC motor, you need to be able to reverse the direction of the current in the motor. The easiest way to do this is using an H-bridge circuit. There are many different models and brands of H-Bridge. This tutorial uses one of the most basic, a Texas Instruments L293NE or a Texas Instruments SN754410. I ...

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PowerBox: The Safe AC Power Meter

Introduction We designed a device that measures and graphs various aspects of AC power and acts as a computer-controlled remote switch. With the recent push for green energy and environmental friendliness, more and more people are concerned about their personal daily power usage. We developed a microcontroller-based device to measure AC power. The user will be able to insert the device between the wall sock ...

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Small DC Motor Pwm Speed Controller

The photo depicts a speed controller, wired on a breadboard which allows you to vary the resistance in the potentiometer in order to, in effect, control the speed of the small DC motor. The big picture problem is creating an efficient PWM motor controller that allows for an analog variance of voltage across the motor. Solving this partially or completely is important because the process allows for a range o ...

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Automatically water your small indoor plant using Arduino + pump

Have you ever wanted a little plant to brighten up your desk or home, but you're afraid that you'll forget to water it? Fear no longer! Using an Arduino, a scavenged wall-wart, and a peristaltic pump, you can set up your plant to be watered as often as you like, from a jug or any other vessel. To be as accessible to as many people as possible, this tutorial can be done without soldering. That being said, th ...

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Arduino+Stepper Motor Camera Slider

This is a trial and error / design and development process which I followed in developing a camera slider for creating time-lapse video clips on my DSLR camera. The idea came from using standard Aluminium extrusions I have available at hardware stores, and create a slider chassis / dolly which is able to slide along this extrusion. The Aluminium extrusion is what builders use for creating a smooth screed on ...

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DC motors Relays

Let's get the math over right off the bat. There are a LOT of attempts to describe how Ohm's Law works, each one nerdier than the last. Here' one I like. Warning: SFWBN (safe for work but nerdy). V = voltage measured in volts - the difference in electrical potential. I = Current measured in Amps or Amperes - the rate of the flow of electrons. R = Resistance measured in Ohms (Ω) - opposition to the flow of t ...

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Bidirectional motor control

One of the simplest ways to get a motor to turn in both directions is by using a double-pole, double-throw (DPDT) relay. Along with the relay, this hookup requires two transistors and two Stamp pins, one for on/off control and the other for direction control. The diagram below contains the schematic for this setup. The DPDT relay is switching the direction of current flow through the motor to get it to turn ...

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