ATMEL Mega1284P evaluation board avalible

That board (skyjumper's?) has a teaser domain name on it. No web server, no MX record. Hmm...

Anyway, CrossRoads, what are your ultimate plans for this board? Do you intend to:

  • make the plans available for download
  • sell bare boards
  • sell kits (bare boards + parts)
  • sell complete boards

or some combination?

I'd be up to get one... preferably already built.

I might be missing something very obvious, but it doesn't look like the pin headers on either side of the board line up properly to allow shields to be mounted.

oscarBravo:
I might be missing something very obvious, but it doesn't look like the pin headers on either side of the board line up properly to allow shields to be mounted.

Just to clarify, are you referring to the board photos recently posted, or CrossRoads' diagrams? I wondered the same thing looking at the photos...

I'm referring to CrossRoads' layer plots. The pin headers seem to line up just fine in the photos.

Shield footprints - They should line up - I started with the duemilanove footprint and never touched the shield headers - only enlarged the board around them. The perspective might look off due to the board being longer & wider.

Website - Yeah, Skyjumper might be a little ahead of the game - or I am in posting that. But it does look sharp!

Selling - I think I'd be up for selling bare boards and/or kits from a pick list - you get all this with every kit (a,b,c), pick from the following: 1 of w or x, 1 of y or z. I don't know about completed boards, I don't have time to line up an assembly house, nor time to assemble them myself. Maybe just have the FTDI chip soldered, folks can hand solder the rest depending on what they want to implement. I think build at least a couple and make sure every thing works as expected.

Got the labeling cleaned up last night, will create gerbers tonight & review, then I think its time to place an order and buy some parts!

CrossRoads:
Shield footprints - They should line up - I started with the duemilanove footprint and never touched the shield headers - only enlarged the board around them. The perspective might look off due to the board being longer & wider.

Here's what I'm talking about:

On the Arduino on the desk in front of me, those pin headers line up. Again, maybe I'm missing something obvious.

Here's what I'm talking about:

I think that is still correct, he just added two more analog input pins onto the normal 6 pin analog shield connector, making it a a 8 pin connector. Normal shields will still mate up. I think that is how the mega board does it also.

Lefty

Correct, A6 & A7 added to the analog header.

Okay, I think this is the final pass:



CrossRoads:
Correct, A6 & A7 added to the analog header.

Ah! Told you I might be missing something. Turns out it was the ability to count. Carry on!

It can look a little deceiving :slight_smile:

.. do the smd parts (e.g. c2 r2) below the IC socket fit without touching the plastic socket's diagonal frame? P.

The SMD parts do look a bit too close on that.

There will be no diagonal frame, just socket strips. I'll see if the parts can be moved in a little.

.. so you are not going to use the standard dil40 machine (precision) socket?

No, being in the US, I was thinking more like this, comparable design, less expensive.
http://www.dipmicro.com/store/index.php?act=viewProd&productCode=HDR40X1FM

Course if one had a bare board one could populate as desired. Take a frame and cut the middle span for example.

I like the look of these, just gets kind of pricey to use 40 - becomes a $6 socket!
http://www.dipmicro.com/store/0552-2-15-01-11-27-10-0

Pito,
I think you recommende a cap on the 32K crystal - any value recommened there?

http://datasheets.maxim-ic.com/en/ds/DS1307.pdf

Crap. Just discovered that the 20mm battery holder (CR2032) I used from the Sparkfun library is not actually carried by Sparkfun.

Anyone seen either of these in the Eagle Library?
http://www.dipmicro.com/store/BH120591-1
http://www.dipmicro.com/store/BH2025

Thanks
Robert

Those machined headers will probably do fine for the chip although I have never seen them used that way before
EDIT: Just tested on one, seems to work quite well actually.

Crap. Just discovered that the 20mm battery holder (CR2032) I used from the Sparkfun library is not actually carried by Sparkfun.

Anyone seen either of these in the Eagle Library?
Plastic Battery Holder 1-cell ø20mm PC 120591-1 - dipmicro electronics
Coin Battery Holder ø 20mm (CR2025, CR2032) Top Load - dipmicro electronics

Sounds like a job for EAGLE part making :smiley:

I'll take a look through the libraries I have later and see if anything matches up but it would almost be faster to make a part.