USBasp ISP with ATmega8

April 27th, 2012 by Fábio Souza | In: Arduino, ATMEGA, ATMEL, Electronics

The circuit is a homemade ISP using an ATmega8 with USB communication and software that allows to program AVR microcontrollers more (ATmega, ATiny) to be used as Arduino, an eco-mode.

It is good to always have a backup scheduler as plan B

The schematic and firmware can be observed here. Below are pictures of the experience.

USBasp on white card test

And here's a reading to an Arduino with an ATmega 328:

Fuse read Arduino


ATMEGA328 … parte 2

March 29th, 2012 by Miguel Ferreira | In: ATMEGA, ATMEL, Blog, Electronics

Today I decided I had time, and after reading something more (http://mightyohm.com/blog/products/hv-rescue-shield-2-x/) did on Board of experiences to see if my beautiful atmega was returning to hear me….
(more…)

Tags: , , , , , ,

Atmega 328P-PU – DEAF!

March 28th, 2012 by Miguel Ferreira | In: Arduino, Arduino, ATMEGA, ATMEL, Programming

Gave me the ' spoil’ an ATMEGA328P-PU for having cheated on ' fuses '… But there is a remedy :)

(more…)

In Barometric Sensor Ethershield

February 13th, 2012 by Fábio Souza | In: Arduino, Arduino, ATMEGA, ATMEL, Electronics, Intranet and Internet, Programming

This is a preliminary test of a barometric sensor connected to an Arduino board with homemade ENC28j60, that allows you to read the atmospheric pressure in real time using I2C in PA (Pascal) from the point where. It also makes reading of temperature. Is a strong candidate to get in several projects intended for meteorology home.

With Ethershield barometric sensor

(more…)

Tags: , , ,

My Homemade Arduino

September 16th, 2011 by Miguel Ferreira | In: Arduino, ATMEGA, ATMEL, Blog

As my old arduino was sold (for wine or for something useful), I decided to do a 100% compatible but without the bugs that I had…

(more…)

Tags: , , , , , , ,

Homemade Arduino with ENC28J60

September 7th, 2011 by Fábio Souza | In: Arduino, Arduino, ATMEGA, ATMEL, Blog, Electronics, Intranet and Internet, Programming

After I complain of my Arduino Duemilenove due to lack of current to power other devices, I decided to build my own in perforated plate, with a 20 MHz crystal, an LM317 1A and a bus to connect ENC28J60. The part belonging to the Arduino occupies as much or less than the original PCB.

Below is the part of the Arduino to function in full, with a FTDI USB to RS232 and external power supply.

Homemade Arduino test


(more…)

Tags: , , , ,

USBtinyISP AVR Atmel

July 28th, 2011 by Miguel Ferreira | In: Arduino, Arduino, ATMEGA, ATMEL, Electronics, Programming

An excellent way to reprogram Arduinos, among others…

Already bought a few months valiant this programmer, It costs about 15 €, Although you can find between 10 and 40, but decided to purchase where trust and, the past two weeks came, everything ok and functional, the first test I did was with my ' old’ Arduino UNO (We have already dispatched for some time).
(more…)

Tags: , , , , ,