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Author Topic: ATMEL Mega1284P evaluation board avalible  (Read 71696 times)
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Would be cool if someone could come up with a core files needed to run this $29 puppy with the arduino IDE:

http://store.atmel.com/PartDetail.aspx?q=p:10500272

They supply the needed USB driver, but you have to register for the free download.

Not sure if the bootloader is compatible with AVRDUDE or not, or if it even uses a bootloader.

The mega 1284P is the top of the line 8 bit AVR for us DIP package fans and may be that forever? However it's not the DIP packaged chip used in this evaluation board.

Lefty

« Last Edit: May 13, 2011, 09:19:49 pm by retrolefty » Logged

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Ooh! I agree -- this would be great!
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What would you say to an Uno compatible board with shield compatibility, 1284P processor, added RS232 drive capability, and additiona port pins to take advantage of the other port the 1284 offers? I have a design in mind, gonna do it up in eagle tomorrow and come up with a layout.
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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.

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What would you say to an Uno compatible board with shield compatibility, 1284P processor, added RS232 drive capability, and additiona port pins to take advantage of the other port the 1284 offers?
I'd say you've had this on the cards for a while smiley I'd also say it's a good idea.

Let us know if you want people to peer review of the schematic.

______
Rob
 
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What would you say to an Uno compatible board with shield compatibility, 1284P processor, added RS232 drive capability, and additiona port pins to take advantage of the other port the 1284 offers? I have a design in mind, gonna do it up in eagle tomorrow and come up with a layout.

I would like it, esp if the dip packaged version was used. Otherwise the 1280/2560 has more bang per board layout.

Lefty
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What would you say to an Uno compatible board with shield compatibility, 1284P processor, added RS232 drive capability, and additiona port pins to take advantage of the other port the 1284 offers? I have a design in mind, gonna do it up in eagle tomorrow and come up with a layout.

Very much what I need. In my particular case, the RS-232 will eliminate the need for one external chip as well! All I'd need is that and a good WiFi solution. Still looking for one. I don't need all the expanded i/o of the MEGA boards, I am really just short on RAM. Do you have a target price?
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Would be cool if someone could come up with a core files needed to run this $29 puppy with the arduino IDE

It looks like the crystal is 11.0592 MHz (or something close; I'm having trouble reading the number).  Is that the only issue?  Modifying an existing core for the "odd" crystal frequency?

Is there a core available for the 1284P family?  (isn't it just a big 644?)

Do you picture this core having built-in support for the gadgets?
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Okay, here's my draft of the "Bobuino" as I haven't come up with a better name yet. Realized I forgot JTAG & ICSP header, will add those in next.
Am thinking maybe ditch the RS232 connector and just have a header pin block instead, skinny up the board a little more. Than folks can add DB9 of choice (male/female) with a couple wires to a less expensive panel mount part vs board mount connector.
Or leave it, seems like someone is always connecting a GPS or something similar.

Why DIP vs SMD?

No idea on price yet, will run a parts list thru digikey & see what it comes back like.

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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.

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Why DIP vs SMD?

Just so one could develop the sketch on the board and then pull the chip for a standalone application. No big deal I guess, just more convenient then directly programming the dip in it's standalone home.

Lefty
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I think that's one major advantage of the 1284 - you can get it in DIP smiley
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Looks like it could fit, have to see if its routable or not. Kinda jammed up by the SD card driver & RS232 driver.
Still no JTAG/ICSP headers.
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Arduino for Teens available at Amazon.com.

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I think that's one major advantage of the 1284 - you can get it in DIP smiley

That was my whole point. I homebrew some of my stuff, but only in DIP version, too old and tired to do major smd hand soldered layouts.

Another question is the 1284 and 644p pin compatable in the DIP versions? An arduino board that could utilize DIP 644p and 1284 would open my wallet, assuming the IDE software could be made to work with it by mear mortals like myself.  smiley-grin

EDIT: Answered my own question by reviewing datasheets: 644p and 1284 are pin compatible in 40pin dip version at least.

Lefty
« Last Edit: May 14, 2011, 05:23:23 pm by retrolefty » Logged

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For my own personal interest, DIP vs SMD isn't a big deal. I think conceptually I like the idea of DIP as it does afford more flexibility. But, as to the RS-232, for my own (current) need, just some form of header would be even better, as I need (well, want) to get to an RJ-11.
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I'd ditch the DB9 and use a header. You can get IDC DB connectors that use ribbon cable so they still look neet and can easily be mounted remotely, makes fitting the board into an enclosure easier and you can swap from male to female without desoldering a connector.

That should route easily (manually of course smiley), using the DIP doesn't really make it worse because you can run 2 lines between pins, whereas the TQFP is basically a no go zone for one layer.

Please get rid of the huge USB connector and use a mini B.
 
Add a jumper (not a solder bridge) for the auto reset so it can easily be disabled.

The headers at the end of the chip are pretty close, Ok if you use a screw driver to remove the chip from the other end but may get in the way of a chip puller.

Crystal too close to the chip, especially with a socket.

I'll shut up now, I guess it's just a quick mock up but thought I'd highlight a couple of things anyway.

______
Rob


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Well, I got the schematic redone for the DIP, added solder bridge fields to route I2C or A4/A5 to the shield header.
Can change the solder bridge things to pins when I see that it routes okay, same with moving the crystal a scooch and pulling the DB9 off.
Will look at the header spacing also, can move if the db9 is gone.
USB change as well.
« Last Edit: May 14, 2011, 08:33:26 pm by CrossRoads » Logged

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.

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