Go Down

Topic: Arduino serial with MAX232 or equivalent? (Read 7632 times) previous topic - next topic

follower

Quote
After much deliberation, these will be silkscreened as "Freeduino MaxSerial".

Before I got to the end of the thread I was going to suggest using Freeduino Serial Max. :-)

--Phil.

P.S. Followed by the "Gold" and "Pro" designators... :D

nkcelectronics

Quote
After much deliberation, these will be silkscreened as "Freeduino MaxSerial".
I like MaxSerial.
Quote

I've noticed most people seem to regard the NKC Electronics boards as the unofficial official Freeduinos.

The Freeduino spirit doesn't allow the existence of an official version... maybe my boards are some sort of de-facto standard in the Freeduino world, because I am part of the team that created the first prototype releases, but there are many variations showing up... but yes, all the blames for the bad designs, problems, etc are almost all mine.

nkcelectronics

Freeduino serial V2.0 is ready.  It uses a MAX232 or compatible IC and has onboard 3.3V regulator (will be optional in the kits) using a 78L33 and a cap.  Will test for a couple of more days and will be available as kits.  So far, I tested uploading aprox 10 example sketches with 100% success.

spiffed

MaxSerial boards are now in stock.

Check out the directions, or just jump right to the WebStore and buy a kit.
iDuino - MaxSerial - [url=http://spi

tvdbon

is there a singe sided arduino board with the max232 available anywhere? I'd like to try and etch one but I'd like it to work with the max232 chip

spiffed

You may have better luck than me, but I couldn't fit the MAX232 and associated bits into the footprint of even the much larger SS-Serial board. Even double sided the board still has a few vias.

If you can fit it onto a reasonably sized single sided board, I think we'd all love to hear, otherwise, I sell just the bare board for exactly this reason. If you'd like a starting point, the board/schematic are available at the end of the directions.
iDuino - MaxSerial - [url=http://spi

purgedsoul

Quote
I started doing a version with max232 three weeks ago, based on S3v3 version, but stoped. If you want one, I think I can restart it. In a preliminary view, it will be a little bigger than S3v3 (less than 1cm.).



Hi Adilson,

I am interested in a single sided Severino with Max232. It would be nice to see a different type of Severino. Looking forward to this. :-)

purgedsoul

I would like to share to the community my single sided Max232 Arduino clone. This is based on the single sided board done by Adilson. Made it as a learning experience using Eagle. While waiting for Adilson's version, got to thinking why not try to create one. So after a few weeks of tinkering with Eagle finally got it made. Cheers!




mellis

purgedsoul: very cool!  Is it working well?  Can you post the Eagle files somewhere (if you haven't already)?

purgedsoul

Thanks Mellis! Sorry forgot to attached the Eagle files. but here it is.

http://www.sendspace.com/file/6s8mq0

The clearance of trace between the leads of C5, C8 (Vin Trace) is very fine, I have to score it since when I did the toner transfer, it somehow merged with the pads of C5. :-( It is also true with DB9 pin 4. I will have to make some modification to this.

Yes, it is working, I have tried uploading sketches to it and it worked fine, also the autoreset worked. I also uploaded the bootloader using the ICSP pins on the board, but have to desolder LED L (on pin 13) first.

I am currently running a sketch on it making it as a thermometer using LM35 with output routed to a 3310 LCD (PCD8544). :-)

Adilson Akashi

Nice Job PurgedSoul.

I'm very busy taking care of my newborn baby, so I stopped the development of MaxSeverino.

Good luck.
PCB Designer

purgedsoul

Quote
Nice Job PurgedSoul.

I'm very busy taking care of my newborn baby, so I stopped the development of MaxSeverino.

Good luck.


Thank you Adilson! and Congratulations! :)

Adilson Akashi

PCB Designer

adisor


adisor


Go Up