One of the relatively unexplored topics in this week’s lecture was USB, the ubiquitous protocol that allows computers to communicate with peripheral devices (containing microcontrollers). Creating a USB device allows any computer to talk to it without the specialized software and hardware we’ve been using so far. For these two weeks, I decided to understand […]
Weeks 11-12: AVR USB Devices and Programming Read More »
In this project, a device will be designed that will read analog data from any analog sensor and will send the digitized form of that data to a personal computer on USB interface. On PC, a desktop application will store the data in an excel spreadsheet therefore performing the data logging. For this, the device
Atmega 32u4 Based USB Data Logger (Part 23/25) Read More »
Introduction We created a handheld mouse device that measures its tilt and then wirelessly transmits the data to a base unit, which is connected to a PC through a USB cable and can be recognized by certain modern computers as an actual mouse. The purpose of this project was to explore the possibility of creating
USB wireless tilt mouse Using Atmega644 Read More »
Introduction We have used the Atmel Mega32 AVR microcontroller to construct an affordable, high end security system designed to protect valuables in a single room of a house or property. According to national surveys conducted by the department of Justice, property crimes are ten times more prevalent in the United States than violent crimes. On
Eye in the Sky Security System Using Atmel Mega32 Read More »
What a USBtiny programmer actually is USBtiny is a software USB stack written by Dick Streefland for AVR microcontrollers with no USB peripheral, and USBtinyISP is the board built around it: an ATtiny2313 on a 12 MHz crystal, an ISP header, and on most versions a 74AHC125 buffer. No bridge chip, no USB-capable MCU —
USBTiny-MkII SLIM programmer 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
USB Sensors with ATtiny Microcontrollers Read More »
This USB to serial (TTL) converter project is easy to build, it is simple and inexpensive. It is based on the PL2303SA USB to USART bridge from Prolific. The PL2303SA chip is not required an external crystal as the internal clock oscillator is continuously tuning up to USB bus frequency. Having chip in SO-8 packaging
USB to Serial Breakout Board for Prolific PL2303SA Read More »
Sometimes it’s tempting to re-invent the wheel to make a device function exactly the way you want. I am re-visiting the field of homemade electrophysiology equipment, and although I’ve already published a home made electocardiograph (ECG), I wish to revisit that project and make it much more elegant, while also planning for a pulse oximeter, an electroencephalograph (EEG),
Multichannel USB Analog Sensor using ATMega48 Microcontroller Read More »
Having done half a dozen V-USB tutorials I decided it’s time to whip up something cool. As USB keyboards were an area untouched. I decided to make a small USB HID keyboard device that types a password stored in EEPROM every time it’s attached. A new password can be generated just by tabbing CAPS LOCK
DIY USB password generator using ATtiny Microcontroller Read More »
Around time when I was beginning to learn about microcontrollers. I had exchanged my laptop with a senior at college for his desktop – that’s because the only way I knew how to program an ATMEGA chip was through either a serial port or a parallel port. USB programmers were not available widely and were
Making a USB based AVR Programmer using ATMEGA8 Microcontroller Read More »
