Arduino MEGA

March 16, 2009 by Eliot 53 Comments

arduino_mega

Evil Mad Scientist Laboratories spotted one of the first images of the Arduino MEGA. The board is based on the ATmega1280 microcontroller, which has 128KB of flash,4KB of RAM, and 4KB of EEPROM. We haven’t seen any official specs yet, but the silkscreen shows 12 PWM connections, 36 Digital I/O, and 16 analog inputs. The post mentions 4 hardware UARTs and an I2C bus as well. No release date yet, but we can assume it’s soon since the hardware was already demoed at ETech.

Related: We added an Arduino category.

AVR HV Rescue Shield

March 13, 2009 by Caleb Kraft 4 Comments

rescueshield

While playing with an ATmega168, [Jeff] programmed the RSTDISBL fuse bit. This pretty much makes the chip useless in most cases. [Jeff] didn’t want to give up on it though, so he built a system to program it using the rarely used high voltage parallel programming mode. He used an Arduino, a few lines of code and a few spare parts to make it. After sharing the idea with some fellow programmers, he decided to make an Arduino shield specifically for this purpose. You can use this to reset almost any fuse to rescue a chip. If you are a die hard AVR person and never started using Arduino instead, the STK500 actually has this built in.

Accelerometer Controlled Pong

February 10, 2009 by Caleb Kraft 6 Comments

pong

[Adam] sent us this cool game he made. It is accelerometer controlled pong (translated). The screen is a Nokia 3310 LCD, tied to an ATmega8 for the brains. He’s using an MMA7260 accelerometer for the controls. The whole thing is encased in an iPod nano box. this looks like a pretty fun little game, though we’d like to see someone attempt a two player match with it.

Wireless Bootloading

January 28, 2009 by Caleb Kraft 3 Comments

[vimeo= 2976417]

Tired of having to physically connect to your microprocessor to upload new code? Just do it over a wireless connection. [Nathan] takes us through the process of setting up a wireless bootloader for the ATmega168. He is using the XBee base and remote modules for the wireless communication. While people have been doing wireless bootloading with the Arduino already, [Nathan] found that it was common for them to have timeout issues. His remedy was to make his own custom one that is much faster. He’s asking for help though. At this point it is tested and working, but he needs someone with more programming knowledge to help him make it “drop-in” compatible with the Arduino IDE.

Don’t forget to submit projects to our tip line.

Wireless BlinkM Control

January 10, 2009 by Eliot 5 Comments

blinkm

[John] has been working with several BlinkM RGB devices. He’s created a controller to talk to each of the BlinkMs wirelessly and change their behavior. The core is an old relay tester box used to test telephone circuits. Each of its four knobs are connected to the analog inputs on the Arduino. The signal is transmitted using RFlink devices. Each BlinkM is paired with an ATmega168 and receiver. The control box also has a switch to send the same signal to all of the devices at the same time. The transmit and receive code are available on his site. You can find a video of it embedded below.

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RepRap Motherboard

December 24, 2008 by Eliot 11 Comments

reprapmb-1

When the RepRap team found themselves pushing the limits of the Arduino, they started looking for alternatives. They found it in the ATMega644P. It has four times the memory and four times the RAM compared to the ATMega168 used in the standard Arduino. It also has 32 I/O pins. They ported the Arduino software to the microcontroller and started producing Sanguino boards. Now that the base design is nailed down, they’ve begun expanding it to their specific purpose. Pictured above is a prototype RepRap motherboard. While the Sanguino is barebones, this board has onboard connectors for all of the RepRap’s motors, so you can just plug it in. It is also designed to support the future Generation 3 electronics. Probably the most interesting feature is the SD card slot. The goal is to eventually have a board that can run the RepRap without a host computer if necessary; it will manufacture designs directly from the flash card.

ATmega Controller Wiring Upgrade

November 27, 2008 by Eliot 5 Comments

avrcontroller

[jelengar] liked the ease of use of the Arduino, but wanted a much higher pin count. He set about converting the ATmega Controller for use with Wiring, the code that the Arduino IDE is based on. The ATmega128 in the controller features 53 pins as opposed to the 11 on the Arduino’s ATmega168. You also get 128kb of memory. The process is fairly simple; you just need to add the appropriate crystal. You can also add a switch to trigger the bootloader and a status LED.