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Topic: ATMEL Mega1284P evaluation board avalible (Read 180206 times) previous topic - next topic

oscarBravo


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!

CrossRoads

Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

pito

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

mowcius

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

CrossRoads

There will be no diagonal frame, just socket strips.  I'll see if the parts can be moved in a little.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

pito

.. so you are not going to use the standard dil40 machine (precision) socket?
http://www.chip-service.de/product_info.php?language=en&info=p185_DIL40%20Sockel.html

CrossRoads

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
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

CrossRoads

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

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

Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

CrossRoads

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
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

mowcius

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.

Quote
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

Sounds like a job for EAGLE part making :D

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.

CrossRoads

Well, faster for someone more experienced than me!  I kind of bumble along, having only done 1 so far. Learned a lot about eagle doing it, but by no means was it a speedy process.

I use the machine header strips all the time.  A large # of what I have built so far has used those as a socket for a Promini's, with pins installed in the promini. Dipmicro has the too.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

mmcp42

#191
Jun 06, 2011, 08:50 pm Last Edit: Jun 07, 2011, 08:20 am by mmcp42 Reason: 1
here's one I prepared earlier

if you want any mods just let me know

but it does seem to match the data sheet I found (TYCO 120591-1)

LINK REMOVED AS THE LIBRARY WAS INCORRECT

see post #203 for library Mk II

added link to data sheet
there are only 10 types of people
them that understands binary
and them that doesn't

skyjumper

MMCP42, what's the part number for that? I was just about to place an order from Digikey and I can grab one of those for Crossroads to play with.


mowcius

Well it's two pads either 20 or 26.92mm apart for the ones CrossRoads posted... I wouldn't bother with an actual part atm :D

mmcp42


MMCP42, what's the part number for that? I was just about to place an order from Digikey and I can grab one of those for Crossroads to play with.




it's the tyco 120591-1

120591-1
there are only 10 types of people
them that understands binary
and them that doesn't

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