Society of Robots - Robot Forum
Electronics => Electronics => Topic started by: Razor Concepts on May 10, 2009, 11:26:09 AM
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The ATmega644 is the most powerful ATmega in DIP package, so I decided to make a little development board out of it.
(http://img74.imageshack.us/img74/6114/644.jpg)
The ft232 USB chip is also on a removable breakout board. So now if the two "big" chips ever fry I won't have to replace the entire board ;D
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good idea! It's easier than making an arduino board?
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This is my ATmega644 board, not sure if you've seen this vid yet or not. Its also the Axon alpha version.
Accelerometer Demo (http://www.youtube.com/watch?v=9NEiBDBXFEQ#lq-lq2-hq)
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The ATmega1284 just came out and it has the exact same pin out. In addition to that the chip has more flash and sram, and probably eeprom. There is a neat pcb style board called the sanguino that also uses the ATmega644p (could use 1284). The board is set up to use a usb ftdi cable instead of a usb B cable.
http://sanguino.cc/ (http://sanguino.cc/)
This is the board I used in my firefighting robot woody.
http://www.societyofrobots.com/robotforum/index.php?topic=7653.0 (http://www.societyofrobots.com/robotforum/index.php?topic=7653.0)
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The ATmega1284 just came out and it has the exact same pin out. In addition to that the chip has more flash and sram, and probably eeprom. There is a neat pcb style board called the sanguino that also uses the ATmega644p (could use 1284). The board is set up to use a usb ftdi cable instead of a usb B cable.
http://sanguino.cc/ (http://sanguino.cc/)
This is the board I used in my firefighting robot woody.
http://www.societyofrobots.com/robotforum/index.php?topic=7653.0 (http://www.societyofrobots.com/robotforum/index.php?topic=7653.0)
According to DigiKey it won't be available until July. Do you know other places where it is already available?
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mouser.com has them
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mouser.com has them
I made a mistake in my previous email, I actually meant Mouser instead of DigiKey.
Availability: on order, Estimated Ship Date 07/08/2009
On DigiKey the quantity available is 0.
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I made a mistake in my previous email, I actually meant Mouser instead of DigiKey.
Availability: on order, Estimated Ship Date 07/08/2009
My bad I hadn't tried to buy any but I thought they were already available. Well at least any dev board you use with the 644 will be upgradable by a simple chip swap later on.
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Forgot to post the finished version. The FT232 is surprisingly simple to wire up... the only downside is that it's only in SMD format. I bet it would be a hit if they released one in a DIP package.
(http://i43.tinypic.com/348ra54.jpg)
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Another option to the ftdi chip is an ftdi usb cable. Granted this does not look as cool, and the cable is more expensive, but the cable gives you a whole lot more space on your dev board. In place of a usb port, the ftdi breakout ect. you have a simple 6 pin header. take a look at my board here http://www.societyofrobots.com/robotforum/index.php?topic=8060.0 (http://www.societyofrobots.com/robotforum/index.php?topic=8060.0)
The 6 pin headers in the bottom right are the uart to ftdi cable headers.
**Also where is you 5v regulator? I don't see it in your last picture?
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there isn't one! :o
i think he may either get it from a regulated supply or from usb power?