Society of Robots - Robot Forum
General Misc => Misc => Topic started by: dellagd on June 27, 2009, 07:35:36 AM
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hey guys,
anyone have an excess of working MCUs that they would be willing to sell, like $50 boards or arduinos? I need some MCUs and was wondering if you guys would be willing to sell before I go off and spen $60+?
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why not make your own? its easier and cheaper... and more rewarding.
i have a couple of $50 boards if you really want something?
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how cheap?
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we can haggle if you want... whats your price range?
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well for a $50 board, I'd say $10 - $30
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fair enough, hows $25 + shipping sound? (let the haggling begin :P )
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You can buy Olimex development boards for any sized AVR for roughly $15, its all in a nice pcb with plenty of space to solder headers along with reset button and serial connection.
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Or this:
(http://www.circuitgizmos.com/products/cgbbb/cgbbb.jpg)
for $14.99 and it has a bootloader in the microcontroller.
http://www.circuitgizmos.com/products/cgbbb/cgbbb.shtml (http://www.circuitgizmos.com/products/cgbbb/cgbbb.shtml)
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i cant believe i didn't suggest the bbb myself! its a great board!
@gearmotion, did you fix the shipping issue yet? i want to order some boards NAO! ;D
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i cant believe i didn't suggest the bbb myself! its a great board!
@gearmotion, did you fix the shipping issue yet? i want to order some boards NAO! ;D
It _should_ be fixed. Let me know if it is not.
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well how bout $20, but how much is shipping?
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oh and I saw the bbb, looks really good, and, excuse my noobishness, but what exactly does "comes with a bootloader" mean?
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It means that the microcontroller has a bootloader pre-installed, so that you can program it without a hardware programmer.
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oh and I saw the bbb, looks really good, and, excuse my noobishness, but what exactly does "comes with a bootloader" mean?
A new microcontroller fresh from Atmel has nothing in its flash. In order to put your program into the microcontroller, you need an ISP programmer bit of hardware and software.
A microcontroller with a bootloader has a little program in it already that lets you load your program via the serial port.
This may or may not have an appeal to you.
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so do I still need this?
http://www.sparkfun.com/commerce/product_info.php?products_id=14 (http://www.sparkfun.com/commerce/product_info.php?products_id=14)
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You could use this:
http://www.sparkfun.com/commerce/product_info.php?products_id=133 (http://www.sparkfun.com/commerce/product_info.php?products_id=133)
instead.
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in addition to the BBB there is this... which is the same as what smash was going to sell to you, but not soldered yet
http://www.circuitgizmos.com/products/cgsorkit1/cgsorkit1.shtml (http://www.circuitgizmos.com/products/cgsorkit1/cgsorkit1.shtml)
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the kit is good because while building the board you learn so much about the mcu... and most people are able to memorize the pins on it... i know i can!
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yeah, I probably would get that, but when I made a $50 board, it just wont work! I cant find the problem!
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yeah, I probably would get that, but when I made a $50 board, it just wont work! I cant find the problem!
It is a lot easier to get the BBB working.
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yeah, since it has a PCB
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what about this?
it looks good.
http://store.fungizmos.com/index.php?main_page=product_info&products_id=180&zenid=0d8f480c7b4846e667976afeeb52c27c (http://store.fungizmos.com/index.php?main_page=product_info&products_id=180&zenid=0d8f480c7b4846e667976afeeb52c27c)
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oh! also a quick question. does anyone know where I can get male headers that on one side plug into a breadboard, and on the other lets you plug a servo into it or something. regular ones dont work because one side is too short.
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http://digikey.com/scripts/partsearch.dll?Detail&name=S1242E-36-ND (http://digikey.com/scripts/partsearch.dll?Detail&name=S1242E-36-ND)
(http://media.digikey.com/photos/Sullins%20Photos/PEC36SFDN.JPG)
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i think there should be a for sale/wanted fourm.
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i think there should be a for sale/wanted fourm.
Well, perhaps a "Where to buy" list?
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oh! also a quick question. does anyone know where I can get male headers that on one side plug into a breadboard, and on the other lets you plug a servo into it or something. regular ones dont work because one side is too short.
You can also solder two together via their short sides.
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hmm, never thought of that.
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Here is a picture of the adapter with pin 1 annotation.
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ok put together a bbb and succesfully programmed it. ;D ;D ;D ;D ;D ;D
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well done mate! have you got a shield hooked up for the digital pins?
and what did you program it to do? (always interesting)
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just a simple prog that flashes a led at around 8hz
though whenever I try to compile my own prog I get this error "../LED_blinking.c: error: SoR_Utils.h: No such file or directory"
I think it might have something to do this
(heres the link to the topic) http://www.societyofrobots.com/robotforum/index.php?topic=8525.msg66322#new (http://www.societyofrobots.com/robotforum/index.php?topic=8525.msg66322#new)