Search found 645 matches

by paul
Sun Feb 01, 2009 11:12 pm
Forum: Connecting to BBB, RBBB
Topic: Anyone Using Arduino-0012 on Fedora 10 x86_64?
Replies: 1
Views: 4150

Re: Anyone Using Arduino-0012 on Fedora 10 x86_64?

Maybe post this to the arduino.cc software-troubleshooting forum too, if you haven't already. There's more traffic there for more arcane requests.

Paul
by paul
Sun Feb 01, 2009 10:36 pm
Forum: 8x8 LED board
Topic: Game of Life?
Replies: 7
Views: 12905

Re: Game of Life?

I have some serious work to do updating docs and writing some new apps for the 8x8. The game of life wouldn't be that big a deal and would be fun to watch.
It might even be cheaper than 4 of LadyAda's boards. Not going to happen for at least a month though.

Paul
by paul
Tue Jan 27, 2009 3:33 pm
Forum: Connecting to BBB, RBBB
Topic: Home Brew RS232 To TTL connection
Replies: 2
Views: 5845

Re: Home Brew RS232 To TTL connection

VK3TXD, Sorry for the really slow response - there's some kind of feedback bug on my forum so I've been missing posts. You need to hook up the DTR line on your RS232 jack to one of the channels on the MAX chip (I think there are four) and the output of the MAX channel goes to the reset pin (unmarked...
by paul
Tue Jan 27, 2009 3:15 pm
Forum: Connecting to BBB, RBBB
Topic: USB Bub board on a mac
Replies: 7
Views: 12923

Re: USB Bub board on a mac

Sorry for the slow reply - my forum reporting seems to be erratic ... Does the USB BUB board show up in the Tools -> Serial Port menu? Try plugging / unplugging and observing the menu. Check the power on the BUB and on the BBB Select the correct serial port for the BUB and then hit upload. Put a met...
by paul
Sat Jan 24, 2009 9:47 pm
Forum: Software
Topic: running two independant processes
Replies: 4
Views: 9720

Re: running two independant processes

The first example seems simpler, but both will certainly work.

Paul
by paul
Sat Jan 24, 2009 9:45 pm
Forum: 8x8 LED board
Topic: Game of Life?
Replies: 7
Views: 12905

Re: Game of Life?

I think that code is for a max 8x8 driver chip - unfortunately the data is in a different order. It could easily get you going on coding Game of Life though.
by paul
Sat Jan 24, 2009 9:36 pm
Forum: RBBB
Topic: What are FTDI drivers (using RBBB)
Replies: 1
Views: 4807

Re: What are FTDI drivers (using RBBB)

Sorry for the (really) slow response Patrick, I've been trying to catch up from some major surgery five weeks ago. The P4 doen't need FTDI drivers so don't worry about this. Check the power on the P$ with a meter. If you have power there. And if you built the kit correctly, then the issue is most li...
by paul
Sat Jan 24, 2009 9:28 pm
Forum: Connecting to BBB, RBBB
Topic: P4 + 3rd party USB<->Serial connector (PL2303)
Replies: 1
Views: 4549

Re: P4 + 3rd party USB<->Serial connector (PL2303)

Please check the latest P3/4 docs on the website for connecting the P4 to the BBB. There is an issue because the cable header doesn't power the P4. There are three workarounds for this in the docs. So maybe try this first with the RBBB. If you get things working there, then move on to BBB.

Paul
by paul
Mon Jan 19, 2009 3:29 pm
Forum: BBB
Topic: Key differences between BBB and RBBB
Replies: 1
Views: 8434

Re: Key differences between BBB and RBBB

darudude, The differences between RBBB and BBB are really just in the form factors. There are one or two parts not found on the RBBB such as an inductor for the analog ref voltage, and two reverse polarity diodes instead of one, the power system of the BBB is a tad more complex, but the difference i...
by paul
Mon Jan 19, 2009 11:40 am
Forum: RBBB
Topic: L4931
Replies: 3
Views: 5594

Re: L4931

As long as the center is positive on the power supply, it will work fine. You are correct about the regulator - it will only put out around 300 mA so that will limit what you can hook up to the RBBB. A 7805 is not ideal with a 6V supply because it requires about 2.5 V dropout. I've got some 2940's t...
by paul
Sun Jan 11, 2009 5:09 pm
Forum: 8x8 LED board
Topic: 8x8 LED Board Driver
Replies: 1
Views: 6584

Re: 8x8 LED Board Driver

Here are two chips, both available that appear to work - they seem to be pin compatible but I haven't tested either yet. On the todo list though. A6279EA-T Allegro A6276A As to external memory, it certainly can be done. See Lady Ada's Wave shield and just steal the memory part of the circuit (and co...
by paul
Sun Jan 04, 2009 1:59 pm
Forum: Connecting to BBB, RBBB
Topic: Serial Data to / from BBB
Replies: 2
Views: 4950

Re: Serial Data to / from BBB

madbeing, Sorry for the super slow reply. This fell through the cracks, amid holiday fuss. Everything has been really hectic this year. You are correct that baud mismatch is the usual reason for garbled serial output. Are you just sending to serial monitor in Arduino? Did you change the baud rate in...
by paul
Sun Jan 04, 2009 1:51 pm
Forum: BBB
Topic: AnalogRead
Replies: 2
Views: 9284

Re: AnalogRead

Yes the pin numbering is confusing in my opinion. It's one of those things that the Arduino team in service of supposedly making things easy to use. But then as soon as people get a few chops and get past blinking three LED's it turns out to be confusing. The Arduino team didn't ask me about it thou...
by paul
Sun Dec 28, 2008 12:38 pm
Forum: BBB
Topic: PS-504??
Replies: 2
Views: 6240

Re: PS-504??

I'm afraid that part number is long one at All Electronics. The specified model also had a 1.3mm jack too, and we've since switched to 2.1mm unless you have an older board. I'd recommend 1A @ 6V supply if you can find it. Anything with a 2.1mm jack, center positive in the 6-9 range will work fine. A...
by paul
Fri Dec 26, 2008 3:10 pm
Forum: RBBB
Topic: Problem with RBBB/Atmel168
Replies: 4
Views: 6499

Re: Problem with RBBB/Atmel168

jhornbr225, Sorry for your grief. We finally have some new P4 docs that Brian Riley of Wulfden.org did. He and I jointly developed the P4. On another note, I bought a P4 Serial board and a serial cable so I do not have to use USB. There are three rows of 6 pins on the end of the board opposite the D...
by paul
Sun Nov 30, 2008 12:51 pm
Forum: Hardware
Topic: AVcc
Replies: 1
Views: 4737

Re: AVcc

The AVcc pin provides a reference voltage for the A/D converters. The Atmega 168 datasheet is the best place for detailed reference. Their ref design suggests a small inductor to keep high frequency noise off that pin. You might also be interested in the AREF pin (marked "AR" on the BBB) and AREF (i...
by paul
Thu Nov 27, 2008 2:09 pm
Forum: Connecting to BBB, RBBB
Topic: PL2303 Connection
Replies: 5
Views: 10482

Re: PL2303 Connection

Check the (current) P4 docs - the schematic is in there. Beware of the RX / TX labels on the cable header and digital pins - they are reversed. This is not a mistake if you think about it, the cable TX should go to the chip RX and vice versa. Just swap them if you are having trouble. Connect the DTR...
by paul
Tue Nov 25, 2008 10:13 pm
Forum: RBBB
Topic: Linking boards
Replies: 2
Views: 6638

Re: Linking boards

shags199, I think some people have made some progress on a CAN bus - you can check the Arduino forum and also the Exhibition section of my forum for a "MODBUS" implementation. However I think your best bet for interchip communication is asynchronous serial. The Atmega has a USART built in so it rece...
by paul
Tue Nov 25, 2008 10:01 pm
Forum: Connecting to BBB, RBBB
Topic: PL2303 Connection
Replies: 5
Views: 10482

Re: PL2303 Connection

hamletbon, Sorry about the slow reply, there's something not working in my subscription to this topic. System spec 1) BBB Rev D2 (I notice there's no 1M resistor for the resonator, is it the latest circuit?) It's not necessary - turns out most modern microcontrollers have load resistance built in. 2...
by paul
Mon Nov 24, 2008 8:32 am
Forum: Exhibition
Topic: Controlling a SX-150 analog synth with Arduino
Replies: 1
Views: 6427

Re: Controlling a SX-150 analog synth with Arduino

Rock on dude,

This is way cool. An analog synth I could justify buying too!
I think some, non-midi type controls would be fun too. Get away from just those same 12 notes and all, jk

Paul