board • Tech Projects

A Superhet/Direct Conversion AM receiver for 181.818 kHz using Attiny2313

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Downloads Download the AVRStudio assembly source vlflo13041105A.asm (html format) Download the AVRStudio Hex file vlflo13041105A.hex (html format) Photo of completed receiver. Its pocket sized, but not intended to be used that way because the antenna is a highly directional ferrite loopstick. Its only a matter of luck that there was room for all the components on the board, which […]

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Honey I Shrunk The Arduino using ATmega328p

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As you might be able to tell from recent posts, I’ve been doing quite a bit of work with an Arduino. I’ve now got at least one project that I’d like to make a little more permanent, rather than it just being a bunch of components on a breadboard. The easiest option would probably be to

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RSS Reader using ATmega8 microcontroller

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I spent part of an afternoon developing a hardware RSS reader (most of my time was spent on the python side of things). It’s pretty simple and uses an AVR microcontroller connected to a computer via a serial cable. Hardware I am using the Dragon Rider 500 as a development board. This provides all of the hardware

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4-key keyboard using ATtiny85

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Introduction: A good while back, I made the 1-key-keyboard project. Ever since it has always been in the back of my mind that the ATTiny microcontroller, which I used in this project, had still 3 IO ports which were unused. Only recently I’ve found the time to expand my old project in the most obvious way

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HexiLogger, an Arduino based data logger using ATmega328

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The purpose of this project was to create a simple, portable device that would periodically read sensors and then store the sensor data so it could be retrieved later. The result is the HexiLogger, “hexi” because it can support up to six different sensor inputs and “logger” because it will store the input data on

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Brain-Computer Interface Using Atmega644

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Introduction Our goal was to build a brain-computer interface using an AVR microcontroller. We decided that the least invasive way of measuring brain waves would be using electroencephalography (EEG) to record microvolt-range potential differences across locations on the user’s scalp. In order to accomplish this, we constructed a two-stage amplification and filtering circuit. Moreover, we

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NFC Transmitter and Receiver Using Atmega1284

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Introduction Our project is building one set of NFC module including a NFC transmitter and a NFC receiver both using ATmega1284p microcontroller. We will be using coupled coils to transmit message modulated by a high frequency carrier, whose frequency is the standard frequency for Near Field Communication (NFC) – 13.56MHz (Wikipedia, 2013). In our project,

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Interfacing Triple-Axis Accelerometer with AtMega16

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Requirements AtMega 16 IC/development board 3-Axis accelerometer LCD screen 16X2 (for displaying X, Y and Z data) Description This project makes use of three out of the eight ADCs present in AtMega16 IC to display the corresponding digital data of X, Y and Z outputs of an accelerometer on 16X2 LCD. Accelerometer First let’s talk about

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Ultrasonic Rangefinder HC-SR04 Interfacing with ATmega8

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In this article I will describe how to interface a Ultrasonic Range Finder Module with a AVR ATmega8 microcontroller. I will provide a HEX file which you can burn into your ATmega8 directly to quickly test this whole setup. Ultrasonic range finder modules helps find the exact distance to an object. This can have vast

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Program an ATmega168/328 with codebender

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If you want to use an inexpensive ATmega168 or ATmega328p for your project, but you want the simplicity of the arduino code and codebender, this tutorial will guide you through! A brand new ATmega microcontroller does not come preconfigured to use with Arduino code. So to use one of these you normally need a high

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