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In response to the high interest shown by the readers on a spectrum analyzer posted here I decided to make a new design, that will be available in shop as a kit. The movie shows just a stage in the developing process, where the filters were being tuned. The final design will be powered by an atmega64 and will have 20 bands with 20 LED’s on each band.

I am now searching for a pcb manufacturer to get a good price on manufacturing the boards, then it will all be ready.. stay tuned.

turkeyIt’s Thanksgiving Day in the US and i would like to thank my readers for supporting the website even though i havent been present lately and i havent brought you new content and projects. I hope you’ll have a nice Thanksgiving Day. If your celebrating with family or friends or both may your turkey be tasty 🙂 .

November 19th, 2008

Ethernet via Arduino

Ethernet via Arduino

For Arduino fans this is  great news, now its possible to extend the functionality of the Diecimila board with ethernet shield. The board is built using the w5100 chip from Wiznet, so no need to implement the IP stack.

To connect to your LAN, all you need is to configure the MAC address, the IP and plug the cross cable into the RJ45.

There is offcourse available some demo application, with server/client possibility for easy startup.

This board offers the possibility to explore the TCP/IP networking with a simple and affordable hardware and free software tools.

Ethernet via Arduino: [Link]

November 8th, 2008

Balancing robot

Balancing robot

This is a very interesting DIY project, a little Segway, off course it won’t carry you but it will self balance. The brain of the robot is the Arduino board, the entire robot is powered from a battery,  although the author tried to keep the cost to minimum the final “price” was above 300$.

The sensor for the balancing algorithm was a 2 way accelerometer and one encoder in each motor, all the electronics was bought as a kit, since the author as he stated, a programmer. This can be encouraging for those who want to replicate the robot, since you don’t need to be a hardware guru to build it.

The control algorithm needs a lot of adjusting, trial and error tests and patience.

The balancing robot has one major inconvenient, how to get it up? It is a lot of fun doing it and certainly it is a noticible achievement, but in lack of control it will just stay in one place. I recommend this project to students who want to experiment with different control algorithms like PID, Fuzzy.

Balancing robot: [Link]

AVR ATmega88 development board

We’ve added a new feature to Youritronics, an online shop. We are just starting so for now we only have one item in shop, that is the ATmega88 Development board designed and build by Outsolder Solutions which is a Youritronics partner.

The board features:

  • Board can be powered from AC/DC power, 7.5V-18V/500mA.
  • Firmware can be loaded via preprogrammed bootloader or 6 pin ISP connector.
  • All on board connections made from MCU pins to additional components are made with solder
  • jumpers for easy removal in case of reconfiguration.
  • All MCU pins connected to pin header pins trough 100Ω resistor for short-circuit protection.
  • 5VDC/350mA available on the pin headers, with voltage suppressor protection.
  • Reset circuit and reset button.
  • DB9 connector for serial connection, RS232 to TTL level converter.
  • Potentiometer for ADC input.
  • DC buzzer connected to PWM output.
  • 10 segment led bar controlled by SPI.
  • 2 push buttons for generating external interrupts or general purpose inputs.
  • External crystal oscillator 14,76MHz(not connected, the MCU is set to internal RC 8MHz oscillator).

You can read more about the board at the shop page. (the shop is currently under construction, sorry for any inconvenience.)

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