This library implements an SD card Data Logger that runs on ATmega. It has a small footprint, so it can be loaded on an ATmega8, leaving space for user code. It supports SD and microSD cards formatted with FAT16. It also features log rotation.The “Petit FAT File System Module” by ChaN (http://elm-chan.org/fsw/ff/00index_p.html) it is used to write […]
SD card logger library with log rotation that fits on ATmega8 Read More »
The core of this project is an ATmega8. It features: wind counter slow startup automatic stop configurable motor speed configurable winds 2 directions If you are looking for a CNC version: you can find it here: http://davidegironi.blogspot.it/2016/06/a-cnc-pickup-winding-machine-built-on.html This winder has an LCD display that will show the current motor direction the rotating speed of your pickup
A Pickup Winding machine built on an ATmega8 Read More »
I’ve already had a programmer for Atmel’s AVR microcontrollers, but I couldn’t use it in my lab, because my laptop doesn’t have a LPT port. So I decided to make a new programmer with USB connection. I’ve found an open source programmer AVR doper, and for the basis I took a modified version from the
USB AVR programmer Read More »
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
RSS Reader using AVR mega8 Read More »
I considered subtitling this article, “adventures in breadboard noise”, since that’s what I spent most of my time dealing with. In any case, let’s recap where we were. Veronica’s video generator was generating a stable VGA signal. In addition, a test pattern was being displayed by altering pixel colors on the fly during the scanning
RFID technology brought a great revolution in our life as it simplifies the machine communication. RFID’s are used almost everywhere today Schools, hospitals, industries and much more. This article teaches you to build a simple RFID based security system using AVR microcontroller which is reliable and cost efficient. You gotta be familiar with working principle
RFID based security system using AVR ATmega32 microcontroller Read More »
Description In working w/ 8 or 14 pin avr devices, I would sometimes want to use the RESET pin as io as the io pin count is low. But doing so will disable further programming via SPI. I do not need a full blown HV programmer, just a way to revert these devices to factory
AVR HVSP Fuse Resetter Read More »
This thermostat is built around an ATMega164 and a TC1047A temperature sensor. It controls your furnace and air conditioner. It is not programmable, although it has a clock and is capable if some additional code were written (any volunteers?). The unique feature is that instead of a bunch of buttons and switches, I used a single pushbutton rotary encoder, for
This is the seventh part of an ongoing series about building a low cost, open source streaming internet radio. If you haven’t already, check out the previous parts (see the links at the end of this article) for some background about the project. In part six, we used OpenWrt’s UNIX-style shell commands to interface with
Building a Wifi Radio – Part 7, Building an LCD Display Read More »
A thermistor is a type of resistor whose resistance varies significantly with temperature, more so than in standard resistors. NTCtemp is a simple AVR library to read temperature from a thermistor connected to an atmega micro. The library implements three models convert adc value read from analog input to temperature: Steinhart-Hart Thermistor Equation Beta Model Equation Lookup
Reading temperature on AVR Atmega using a thermistor with NTCtemp library 02 Read More »
