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Topic: ATmega1284P: End to End using 1.0 IDE (Read 76 times) previous topic - next topic


Just posted an end-to-end walkthrough of Arduino on ATmega1284P on a breadboard: Arduino on ATmega1284P.  This is a spin-off of the previous thread on 1284P.  Just wanted to put it all in one place.


One question. As Arduino 1.0 is still in beta (release 4 so far?) will you attempt to keep up with any final changes to 1.0 that might effect something.



I feel like I've been backhand diss'ed with no offer to respond, so I'll do it here.

"Bobuino. Plenty capable board. But it's $80! $80! I am way too cheap for that. Also, there is no coherent software distribution. The (hidden) directions ask users to cobble together a system from various places, and then includes a (hidden) package of files which is not under source control. And worse, no source for the bootloader. "

Bobuino is a pretty complex board that is diffucult to assemble without a template for solder paste application, so I haven't offered it up as a kit. Templates are not cheap.
I do provide all the files to everyone that purchases a board. It works thru -0022, which is all that is currently released. The "cobbling" is done from 2 respected sources, avr-developers.com and sd16fat's library, which I do not control nor update, so I just point the user to them.
I do provide the files I customized for the pinout I used, which maintains backwards compatibilty with old shields. Can't do that on a Mega. SCL/SDA, and SCK/MISO/MOSI are all in the same place on the same pins on the Bobuino.  It also has pins for JTAG interface, which will likely just used as more pin  breakouts.  Okay, so its $80.  That includes shipping (to US locations).  A Mega2560 + Datalogging shield is $85 plus shipping, there's no RS232 interface driver, so that's another shield that's needed too. A 1284 is not a 2560, but its much more than a 328.  If you blow your ATmega2560, you're pretty much screwed. If you blow up your ATMega1284, you pop it out of the socket and drop in another one. And you're still stuck with the big USB connector that everyone complains about.  I don't know what the big deal is on the bootloader source, I don't see too many users clamoring to make changes to them. The bootloader .hex file is also provided if you need to reload a part after frying one. 
I sold a few, I had fun & learned a lot designing & developing it, it was fun building up 10 with my family & friend skyjumper & debugging them and then coming up with test sketches & a procedure to run them thru to make sure everything worked.
Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.


That was probably written in haste, I shall clean it up to be less of a diss.  The points are all legitimate criticism of the product, though they could be phrased more nicely.

$80 is certainly NOT too expensive for what Bobuino gives you, if you need all of it.  But $80 is too much if one doesn't need SD, RTC, and USB.  You've seen some of the same debate on the hackaday entry.

On 'cobbling together' the software...  If someone is going to pay $80, they should expect a simple one-click software distribution, more like what Calunium has.  Customers do get files of course, but Bobuino stands out for not maintaining software in an easy-to-find publicly accessible location so you can easily find them later via web search and so other related projects can leverage the work done by the project.  (The glory of open source.)


   I have bought the Bobuino, and the "small Arduino" boards from CrossRoads. He has went to great lengths to make sure that I was able to get my stuff working. It is a big difference between buying a board from a larger maker than from a individual who is also a Arduino user. If this forum were a "Arduino club", it would be similar to buying from a club member.

He may not be organized in the way you are used to but, when you buy a board from him you will get personal one on one service. I would not expect to Seed or Itead or others places to answer my PMs or E-mails as quickly as he has mine.

In summary, I am happy with the boards and I feel the prices were very fair in relation to both Hardware and support.

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