Search found 637 matches

by paul
Thu Oct 23, 2008 6:04 pm
Forum: Connecting to BBB, RBBB
Topic: can only upload sketch first time
Replies: 3
Views: 6322

Re: can only upload sketch first time

"A: Change this serial port setting: Device Manager -> Com Ports -> USB Serial Port -> Port Settings -> Advanced button -> Set RTS On Close" Paul- what about putting a note about this (and "black is ground, yellow is RX") on the "connect" product page? Good idea - I have been procrastinating on this...
by paul
Thu Oct 23, 2008 5:59 pm
Forum: RBBB
Topic: Auto reset problem
Replies: 21
Views: 37586

Re: Auto reset problem

It's supposed to be 100 nanofarad. (.1 ufd - 104) Don't my instructions show that. The idea with the series capacitor is to allow a low going pulse on the DTR line to reset the uC but still have the pullup resistor holding the reset line high so manual reset will work too. It also allows more flexib...
by paul
Thu Oct 23, 2008 5:52 pm
Forum: 8x8 LED board
Topic: Another Power Question from a Newbie
Replies: 7
Views: 12319

Re: Another Power Question from a Newbie

The 7805 is going to get hot if you have all the LED's on for any length of time. If you only light up a few of them at once it might work fine, a better bet might be to use 4 AA, C or D batteries or a 6V lantern battery. The switching regulator will work fine though and is efficient - it's just fin...
by paul
Thu Oct 23, 2008 5:39 pm
Forum: 8x8 LED board
Topic: Some simple demo code?
Replies: 6
Views: 11403

Re: Some simple demo code?

Oops, that code has a problem in the way frames are indexed. Here's the fix I think. I haven't tested either listing so there may be issues... Write back if they don't work. I'll try and stay closer to the forum. I can't seem to find an email reminder in the prefs. Probably something I'll have to in...
by paul
Thu Oct 23, 2008 11:53 am
Forum: 8x8 LED board
Topic: Some simple demo code?
Replies: 6
Views: 11403

Re: Some simple demo code?

Try this for now. I'm trying to find time to get something better together. You've got the basic idea though

Code: Select all

#include <avr/pgmspace.h>

Removed by Paul - use code below

}
by paul
Sun Oct 19, 2008 11:18 pm
Forum: 8x8 LED board
Topic: Some simple demo code?
Replies: 6
Views: 11403

Re: Some simple demo code?

I've thought about doing this and always found something more important. This will spur me on. I'll just set up an array and flip frames in an animation.
Write back if it's not on the site in a couple of days.

Paul
by paul
Sat Oct 18, 2008 3:25 pm
Forum: 8x8 LED board
Topic: LED's in your video
Replies: 4
Views: 9532

Re: LED's in your video

Sorry about the slow response, I've been busy. I need to find the setting that will send me mail when something new show up in the forum. Maybe this will spur me on. the world's full of LED's. I've been trying to just get them at Digikey recently. There are definitely high quality Asian ones out the...
by paul
Sat Oct 18, 2008 3:18 pm
Forum: RBBB
Topic: Some questions from a newbie
Replies: 2
Views: 4536

Re: Some questions from a newbie

Crystals will work fine - but as you say it's a space issue - just hang them over the side and "fagedaboutit" as we say here in RI. You also have to stub in some 22 pf caps too. I've got s.m. caps that fit in between the pins. In fact I've got a whole crystal kit that is ready to go in bags - I just...
by paul
Thu Oct 09, 2008 3:11 pm
Forum: Connecting to BBB, RBBB
Topic: Connection Questions
Replies: 10
Views: 16951

Re: New Forum & Connection FAQ

Actually if you're using the FT232 breakout board you can use the DTR line (that's the line Arduino uses - but it's not on the FTDI cables) and you'll avoid all the "Set RTS on close" hassles.

Paul
by paul
Mon Oct 06, 2008 9:17 pm
Forum: Development
Topic: RSS feed for the forums
Replies: 10
Views: 17388

Re: RSS feed for the forums

Thanks for the link - I'll try and upload it and see if it works. The new site is OS Commerce, which is really just php scripts. Don't know about RSS. I'll ask my web coach about it.

Paul
by paul
Sun Oct 05, 2008 3:44 pm
Forum: Development
Topic: RSS feed for the forums
Replies: 10
Views: 17388

Re: RSS feed for the forums

I know as a tech guy I'm supposed to be more on the ball. C'est la vie. I've got a new site that is languishing in website Pergatory, waiting to go online, with a blog on the front end where I can gossip about the rest of the Arduino universe. The shop is full of stuff waiting to get photographed an...
by paul
Sat Sep 27, 2008 9:15 pm
Forum: 8x8 LED board
Topic: Power Tips
Replies: 3
Views: 8253

Re: Power Tips

Try getting a surplus computer supply - you can find them supplying 20A at 5V for 10 or $15. Try the trash too, or a municipal computer recyling center. At least you know one part that will be recycled from the machines you recycle in reverse. A lot of computer recycling is completely dubious with e...
by paul
Tue Sep 23, 2008 9:40 pm
Forum: Connecting to BBB, RBBB
Topic: USBTinyISP: initialization failed, rc=-1
Replies: 3
Views: 7278

Re: USBTinyISP: initialization failed, rc=-1

floresta, Sorry for the slow reply. You need to power the board separately from the ICSP header. I'm not quite sure why this is but my AVRISPmkII works the same way. Let me know if this works out for you. So set the shunt on either USB or external and either plug in the FTDI USB cable or an external...
by paul
Sat Sep 20, 2008 1:23 am
Forum: Software
Topic: Frequency to Voltage Conversion
Replies: 7
Views: 13515

Re: Frequency to Voltage Conversion

I think you might end wanting more speed and storage than Arduino provides but I might be wrong too. There are a ton of ARM boards out there that run embedded Linux, so the file system is already supported. That might be the way to go on this. I used one for an LED sign, and it was slick solution to...
by paul
Sat Sep 20, 2008 1:17 am
Forum: Development
Topic: Arduino proto board
Replies: 19
Views: 32944

Re: Arduino proto board

Send me some email with an address and I'll put you on the beta test list.

Paul
by paul
Thu Sep 18, 2008 8:37 am
Forum: Software
Topic: Frequency to Voltage Conversion
Replies: 7
Views: 13515

Re: Frequency to Voltage Conversion

You might want to take a look at LadyAda's Wave board - and SD boards for hardware. See's also got the library worked out for writing to FAT files, so as far as I can see it should be fairly pain free to do what you want. Brian Riley at wulfden.org has an eeprom card that will store a bit of data to...
by paul
Sun Sep 14, 2008 9:42 pm
Forum: BBB
Topic: Schematic or CAD files for rev. D of the BBB?
Replies: 7
Views: 19779

Re: Schematic or CAD files for rev. D of the BBB?

I just posted some new docs for the RBBB and I'll get the new docs for BBB up this week - Way, way overdue. A customer made me beautiful new schematics that are way more clear than mine. Same circuit - more clarity. As to the reset question - floresta is right that the P4 was made to plug into the f...
by paul
Sun Sep 14, 2008 9:31 pm
Forum: RBBB
Topic: 5=4 and 8=7?
Replies: 7
Views: 8896

Re: 5=4 and 8=7?

OK I finally got the docs posted that I did a while back. Some various issues are getting in the way of extremely gratifying documentation work.

See RBBBv1.6.revB2.pdf at the bottom of the RBBB page for the link.

Ask and yea shall receive (eventually)!

Paul
by paul
Fri Sep 05, 2008 6:46 pm
Forum: Hardware
Topic: P3 vs P4
Replies: 9
Views: 11449

Re: P3 vs P4

Waiting for some email response - I'll post it in the M.D. Policies topic. Phone proved useless and frustrating - endless phone tree with no human at the end. Maybe I didn't try hard enough.

P
by paul
Sun Aug 31, 2008 2:59 pm
Forum: 8x8 LED board
Topic: Game of Life?
Replies: 7
Views: 12659

Re: Game of Life?

I haven't heard about it from my customers. Lady Ada has a dedicated board for doing it though. That's what you may be remembering.

Paul