Attach any I2C client chip (thermo sensors, AD converter, displays, relais driver, …) to your PC via USB … quick, easy and cheap! Drivers for Linux, Windows and MacOS available. The i2c-tiny-usb project is an open source/open hardware project. The goal of i2c-tiny-usb is to provide a cheap generic i2c interface to be attached to […]
I2C Tiny USB using ATtiny45 microcontroller Read More »
•Low power •EEPROM memory for autonomous operation, 16 bytes available for general purpose use. •Low cost This device provides three channels of 8 bit pulse-width modulation. Output pulse duty cycle ranges from 0 to 255/256 in 255 steps. DACs may be loaded by the DS interface. DAC values may also be copied into the on-chip EERPOM
3 channel, 8 bit EEPROM DAC with DS interface using ATtiny12 microcontroller Read More »
Introduction In this digital age, new interfaces for musical expression provide much broader musical possibilities than have ever existed before. There is a constant quest to be in harmony with one’s instrument so that music can flow freely from the imagination and take form effortlessly. This sparks an interest in new ways to interact with
A Wearable Wireless Sensor System using ATmega644V Read More »
Working with embedded electronics, you will eventually ends up with some sensor between your hands, here I’ll show how to make a graph out of it! This project involves a light sensor, a tiny 8-pin AVR USB key with the V-USB stack, a GNU/Linux system and rrdtool. Sensors If your are working with some digital sensor
USB Sensors with ATtiny Microcontrollers Read More »
Our goal for this project was to build an OBD-II compliant device that would communicate with any OBD-II enabled car and read back real time data as well as perform basic performance testing and diagnostics. If you’ve ever had to take your car into the shop because of the dreaded “Check Engine” light, you can
ODB-II Automotive data interface using Atmega644 Read More »
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
Brain-Computer Interface Using Atmega644 Read More »
ADC is an electronics device that converts the analog signals to digital number proportional to the magnitude of voltage. The ADC chips like ADC0804, ADC0809 etc., give 8-bit digital output. The controller device needs eight pins to receive the 8-bit data (For more details about ADC refer to Using Inbuilt ADC of AVR). Some applications need higher
How to interface serial ADC0831 with AVR microcontroller (ATmega16) Read More »
This article explores the TWI interfacing between two ATmega32 controllers. Readers are advised to go through TWI Communication and TWI registers of ATmega32 before going further. TWI works in four modes: 1. MASTER as a transmitter. 2. MASTER as a receiver. 3. SLAVE as a receiver. 4. SLAVE as a transmitter. Generally modes 1 & 3 and modes 2 & 4
How to use I2C / TWI (Two Wire Interface) in AVR ATmega32 Read More »
Keypad is most widely used input device to provide input from the outside world to the microcontroller. The keypad makes an application more users interactive. The concept of interfacing a keypad with the ATmega16 is similar to interfacing it with any other microcontroller. The article of Interfacing keypad with 8051 can be referred for detailed description of the methodology used
How to interface keypad with AVR microcontroller (ATmega16) Read More »
ATmega16 has 32 I/O pins to communicate with external devices. Before interfacing with external devices, these pins must be cofigured as input or output pin. This article demonstrates the basic I/O operation of ATmega 16 using LEDs. All the four ports can be configured to read an input from some external device or to give output to
How to interface LED with AVR Microcontroller (ATmega16) Read More »
