Two HTML drop-down select boxes are used to select hour and minute values on a web page that are sent to an Arduino web server. The time values can be used to set a real-time clock or for any other time related settings.
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Hand Gesture Controlled Robot using Arduino
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After making some basic robots like line follower robot, computer controlled robot, etc, we have developed this accelerometer based gesture controlled robot by using arduino uno. In this project we have used hand motion to drive the robot. For this purpose we have used accelerometer which works on acceleration
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Stepper Motor Interfacing with 8051 Microcontroller
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Stepper motor is brushless DC motor, which can be rotated in small angles, these angles are called steps. Generally stepper motor use 200 steps to complete 360 degree rotation, means its rotate 1.8 degree per step. Stepper motor used in many devices which needs precise rotational movement like robots, antennas, hard drives etc.
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Simple Audio Amplifier Circuit using 555 Timer IC
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555 time IC is very powerful and versatile IC, it can be used in many forms. In this tutorial we are going to see how a 555 IC can be used as Audio Amplifier. A low power audio signal can be amplified using 555 Timer IC.
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Heartbeat Counter using MSP430
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Here is my project on counting the heart beats using an MSP430G2553, and a dual op amp ic, LM358, i think any other dual op amp can work in its place [to be sure, just check the pinouts before replacement.
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8 LED Color Oscillator
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Blue - negative, ground Red - positive, Vcc Brown - 74163 pin 11 (Output A) Green - 74163 pin 12 (Output B) Magenta - 74163 pin 13 (Output C) Gray - inverter output
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Mosquito Repellent Circuit
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The concepts of these mosquito repellers are simple and we can build a simple mosquito repellent circuit at home easily by using 555 timer IC and few other commonly available components. Let’s see the concept of mosquito repellent circuit in detail.
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Astable Mode of 555 Timer IC
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If an oscillator of a particular frequency and mark to space ratio is required, the method would be to calculate periodic time from the required frequency and the discharge time and charge time using the formulae for tD and tC described in Oscillators Module 4.3. To do this, some component details will be needed.
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Arduino Humidity Measurement
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Humidity and temperature are common parameters to measure environmental conditions. In this Arduino based project we are going to measure ambient temperature and humidity and display it on a 16x2 LCD screen.
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555 Monostable Circuit
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When the 555 IC is used to produce an MONOSTABLE circuit - it will only pulse once. Monostable circuits can be used to turn lights/LEDs on or off just once. They are also used in many more school based circuits.
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