Society of Robots - Robot Forum

General Misc => Misc => Topic started by: dellagd on June 27, 2009, 07:35:36 AM

Title: old MCUs for sale?
Post by: dellagd on June 27, 2009, 07:35:36 AM
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+?
Title: Re: old MCUs for sale?
Post by: SmAsH on June 27, 2009, 04:14:35 PM
why not make your own? its easier and cheaper... and more rewarding.
i have a couple of $50 boards if you really want something?
Title: Re: old MCUs for sale?
Post by: dellagd on June 28, 2009, 02:33:01 PM
how cheap?
Title: Re: old MCUs for sale?
Post by: SmAsH on June 29, 2009, 12:45:04 AM
we can haggle if you want... whats your price range?
Title: Re: old MCUs for sale?
Post by: dellagd on June 29, 2009, 07:35:00 AM
well for a $50 board, I'd say $10 - $30
Title: Re: old MCUs for sale?
Post by: SmAsH on June 29, 2009, 03:50:01 PM
fair enough, hows $25 + shipping sound? (let the haggling begin :P )
Title: Re: old MCUs for sale?
Post by: Razor Concepts on June 29, 2009, 04:28:29 PM
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.
Title: Re: old MCUs for sale?
Post by: GearMotion on June 29, 2009, 05:44:09 PM
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)
Title: Re: old MCUs for sale?
Post by: SmAsH on June 30, 2009, 12:41:06 AM
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
Title: Re: old MCUs for sale?
Post by: GearMotion on June 30, 2009, 07:09:48 AM
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.
Title: Re: old MCUs for sale?
Post by: dellagd on June 30, 2009, 07:57:08 AM
well how bout $20, but how much is shipping?
Title: Re: old MCUs for sale?
Post by: dellagd on June 30, 2009, 08:01:50 AM
oh and I saw the bbb, looks really good, and, excuse my noobishness, but what exactly does "comes with a bootloader" mean?
Title: Re: old MCUs for sale?
Post by: Finnik on June 30, 2009, 12:04:19 PM
It means that the microcontroller has a bootloader pre-installed, so that you can program it without a hardware programmer.
Title: Re: old MCUs for sale?
Post by: GearMotion on June 30, 2009, 12:24:40 PM
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.
 
Title: Re: old MCUs for sale?
Post by: dellagd on June 30, 2009, 01:29:33 PM
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)
Title: Re: old MCUs for sale?
Post by: GearMotion on June 30, 2009, 02:25:20 PM
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.
Title: Re: old MCUs for sale?
Post by: kpmcgurk on June 30, 2009, 07:32:22 PM
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)
Title: Re: old MCUs for sale?
Post by: SmAsH on July 01, 2009, 12:53:36 AM
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!
Title: Re: old MCUs for sale?
Post by: dellagd on July 01, 2009, 06:11:46 AM
yeah, I probably would get that, but when I made a $50 board, it just wont work! I cant find the problem!
Title: Re: old MCUs for sale?
Post by: GearMotion on July 01, 2009, 07:08:55 AM
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.
Title: Re: old MCUs for sale?
Post by: dellagd on July 01, 2009, 09:44:12 AM
yeah, since it has a PCB
Title: Re: old MCUs for sale?
Post by: dellagd on July 02, 2009, 07:24:31 AM
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)
Title: Re: old MCUs for sale?
Post by: dellagd on July 02, 2009, 07:34:05 AM
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.
Title: Re: old MCUs for sale?
Post by: GearMotion on July 02, 2009, 11:14:45 AM
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)
Title: Re: old MCUs for sale?
Post by: RoboChan on July 02, 2009, 11:28:04 AM
i think there should be a for sale/wanted fourm.
Title: Re: old MCUs for sale?
Post by: GearMotion on July 02, 2009, 11:32:17 AM
i think there should be a for sale/wanted fourm.

Well, perhaps a "Where to buy" list?
Title: Re: old MCUs for sale?
Post by: GearMotion on July 02, 2009, 11:35:54 AM
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.
Title: Re: old MCUs for sale?
Post by: dellagd on July 02, 2009, 12:36:57 PM
hmm, never thought of that.
Title: Re: old MCUs for sale?
Post by: GearMotion on July 09, 2009, 05:06:19 PM
Here is a picture of the adapter with pin 1 annotation.
Title: Re: old MCUs for sale?
Post by: dellagd on July 13, 2009, 05:55:40 AM
ok put together a bbb and succesfully programmed it.  ;D  ;D   ;D  ;D  ;D  ;D
Title: Re: old MCUs for sale?
Post by: SmAsH on July 13, 2009, 06:21:36 AM
well done mate! have you got a shield hooked up for the digital pins?
and what did you program it to do? (always interesting)
Title: Re: old MCUs for sale?
Post by: dellagd on July 13, 2009, 04:55:05 PM
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)