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16  Forum 2005-2010 (read only) / Troubleshooting / Re: Sparkfun MMA7260Q accelerometer on: May 13, 2008, 07:22:57 am
Thanks. That's very good to know for future reference!

Tim
17  Forum 2005-2010 (read only) / Troubleshooting / Re: Sparkfun MMA7260Q accelerometer on: May 12, 2008, 07:18:53 pm
FYI. I ordered and received an ADXL320 and I'm happy to report that it works as expected. It's starting to look as though my first accelerometer was damaged.

Thanks for all your help.
Tim
18  Forum 2005-2010 (read only) / Troubleshooting / Re: Sparkfun MMA7260Q accelerometer on: May 07, 2008, 09:39:52 pm
I don't recall ever having connected the device to the Arduino's VCC connection.

I connected a Wii nunchuck using Tom Igoe's I2C library and that work's splendidly. I have ordered another accelerometer from Sparkfun. If the new one works then I'll know that my current one is bad. If this one doesn't work either, then it's likely something I'm doing wrong!

In the mean time, I can use the Wii's accelerometer.

Thanks,
Tim
19  Forum 2005-2010 (read only) / Troubleshooting / Re: Sparkfun MMA7260Q accelerometer on: May 04, 2008, 07:06:34 am
I tried tying the SLP to 3.3V with the same results. Here is a crude picture that attempts to show the basic setup. I am using a simple voltage divider for testing. In the picture I have the voltmeter connected between 'X' and GND.

Thanks for any info you can provide.
Tim

20  Forum 2005-2010 (read only) / Troubleshooting / Sparkfun MMA7260Q accelerometer on: May 04, 2008, 06:15:39 am
Hey all.

This question isn't really Arduino specific, but sparkfun's user forums don't seem to have a "general help" area - so I figured you would be the best folks to ask.

I have a MMA7260Q accelerometer breakout from Sparkfun, but I can't seem to get it working properly. I checked out the datasheet, and Tom Igoe's tutorial. I was originally trying to use the acc. with my arduino, but when I wasn't getting the results I had hoped for, I hooked up the device by itself.

Below is how I connected the device to my breadboard:
VCC - 3.3V
GND - GND
GS1 - GND # for 1.5g
GS2 - GND # for 1.5g
SLP - UNCONNECTED OR GND #tried both

I then checked the output voltages for X, Y, and Z based on the common ground. No matter how I move, shake, or tilt the device, I only see a maximum of 1mV change (which appears random).

I have double, and triple checked my connections.
Is there something that I am missing here, or is it possible that I have a bad unit?
Thanks,
Tim
21  Forum 2005-2010 (read only) / Troubleshooting / Re: Problem flashing to 009. on: September 12, 2007, 07:45:30 am
I'm pleased to announce that I finally got my board properly flashed to diecimila, installed the 104 capacitor and everything is working wonderfully.

In the interest of full disclosure, I'd like to admit why I was having problems. I hadn't noticed there was a bootloader folder, and a bootloader168 folder. I was trying to burn the m8 bootloader onto my m168! doh!

It happens I suppose. The good news is that it works, and it's a beautiful thing.

Thanks,
Tim
22  Forum 2005-2010 (read only) / Troubleshooting / Problem flashing to 009. on: September 10, 2007, 10:56:18 am
[EDIT]
I finally stumbled across this post, which I believe addresses my problem.
[/EDIT]


Hey all. I did a forum and web search before posting here. I'm trying to upgrade the firmware on my NG board so that I don't have to push the button every time I load a sketch. I built the DAPA programmer listed on the main site, and followed directions in the forum thread linked from there (for using avrdude) that didn't work, so I tried to use the burnpara.bat file... unfortunately, I don't know exactly what all the parameters should be, and now I've bricked my arduino. Any help would be appreciated:

What should the lock bit etc be? Everywhere I look I only find examples for the ATMega8.
Code:
tools\avr\bin\uisp -dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_lock=0xFF
tools\avr\bin\uisp -dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_fuse_l=0xdf --wr_fuse_h=0xca
tools\avr\bin\uisp -dpart=ATmega168 -dprog=dapa -dlpt=0x378 --erase --upload --verify if=bootloader\ATMegaBOOT.hex
tools\avr\bin\uisp -dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_lock=0xCF

Code:
C:\Documents and Settings\Administrator\Desktop\arduino-0009\bootloader>burnpara
.bat

C:\Documents and Settings\Administrator\Desktop\arduino-0009\bootloader>REM Befo
re running this for the first time, you'll need to install giveio.

C:\Documents and Settings\Administrator\Desktop\arduino-0009\bootloader>REM Unzi
p drivers\giveio.zip, then run ginstall.bat.

C:\Documents and Settings\Administrator\Desktop\arduino-0009\bootloader>cd ..

C:\Documents and Settings\Administrator\Desktop\arduino-0009>tools\avr\bin\uisp
-dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_lock=0xFF
Atmel AVR ATmega168 is found.
Writing lock bits ...
Reinitializing device
Atmel AVR ATmega168 is found.

Lock Bits set to 0xff

C:\Documents and Settings\Administrator\Desktop\arduino-0009>tools\avr\bin\uisp
-dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_fuse_l=0xdf --wr_fuse_h=0xca
Atmel AVR ATmega168 is found.

Fuse Low Byte set to 0xdf

Fuse High Byte set to 0xca

C:\Documents and Settings\Administrator\Desktop\arduino-0009>tools\avr\bin\uisp
-dpart=ATmega168 -dprog=dapa -dlpt=0x378 --erase --upload --verify if=bootloader
\ATMegaBOOT.hex
Atmel AVR ATmega168 is found.
Erasing device ...
Reinitializing device
Atmel AVR ATmega168 is found.
Uploading: flash
Verifying: flash
flash error at address 0x1e80: file=0xc6, mem=0xff
flash error at address 0x1e81: file=0xe6, mem=0xff
flash error at address 0x1e82: file=0xd0, mem=0xff

C:\Documents and Settings\Administrator\Desktop\arduino-0009>tools\avr\bin\uisp
-dpart=ATmega168 -dprog=dapa -dlpt=0x378 --wr_lock=0xCF
Atmel AVR ATmega168 is found.
Writing lock bits ...
Reinitializing device
Atmel AVR ATmega168 is found.

Lock Bits set to 0xcf

C:\Documents and Settings\Administrator\Desktop\arduino-0009>cd bootloader

C:\Documents and Settings\Administrator\Desktop\arduino-0009\bootloader>

Thanks,
Tim
23  Forum 2005-2010 (read only) / Development / Re: New!! Arduino XBee Shield on: July 20, 2007, 06:14:22 am
Put me down for one (two if the price is right!).

Excellent work.
24  Forum 2005-2010 (read only) / Development / Re: some alternate layouts on: July 31, 2007, 06:04:26 am
Limor,

I just wanted to say that I am a huge fan and admirer of your work.

I'm just now watching the video of you with Phil Torrone at OSCON, and that promo for the Digg Button that you did with Kevin Rose was the best podcast, ever.

I'm really excited to see that you're a part of the Arduino community. I'm sure you'll bring amazing projects with you.

Cheers,
Tim
http://www.imagitronics.org/
25  Forum 2005-2010 (read only) / Interfacing / Re: Help finding the best way to get position of wheel on: February 09, 2009, 11:18:36 pm
I saw an article in Nuts and Volts a while back on creating an autonomous PowerWheels (TM) vehicle. He used a DC motor to rotate a steering shaft - and he implemented it by putting reed switches on the left and right side of the car and magnets on the steering mechanism (or vice versa) either way, when the reed switch closes, you're at the maximum turn. I don't think it's an ideal solution, but it might work in your case.

I can't seem to find the article online right now, but if you're interested in hearing more, I'll find the issue# when I get home.

Tim
26  Forum 2005-2010 (read only) / Workshops / Re: San Antonio anyone? on: May 14, 2010, 11:39:58 pm
We never did. I had some difficulty getting a unified way to contact people. I had some phone numbers, I had some emails, and I had some people I could only contact through here.

If there's still interest, I could setup a meetup.com group, that would make organization a lot easier!
27  Forum 2005-2010 (read only) / Workshops / Re: San Antonio anyone? on: January 14, 2010, 01:17:57 am
Sounds fantastic. I've had a guilty fantasy about building a diy segway myself. I'm in!

I will send you an private message with my contact info.

Tim
28  Forum 2005-2010 (read only) / Workshops / Re: San Antonio anyone? on: January 10, 2010, 04:13:09 am
Hey guys,

Sorry that it's taken me so long to respond. I'm in San Anton now, though haven't gotten moved into a home yet.  (Two more weeks)

There was another member of this forum who sent me a PM. So that makes four of us. And I noticed a fifth person looking for San Antonio people on the makezine blog.

I am sending PMs to both of you with more information and ways to contact me.
Tim
29  Forum 2005-2010 (read only) / Workshops / San Antonio anyone? on: November 19, 2009, 06:07:12 pm
I'm moving to San Antonio next month and I'm hoping to find some folks interested in hobbyist electronics, arduino, physical computing, autonomous robots... you get my point.

I'd love to hear about any groups in the area that you may know about, or just meet some people in the area who share the hobby.

Thanks,
Tim
30  Forum 2005-2010 (read only) / Workshops / Re: Okinawa? on: July 08, 2008, 04:57:33 am
Awesome!

I live in Okinawa City and work in Urasoe. Are there electronics hobbyist or robotics enthusiast groups on the island?

Oh, you're the perfect person to ask: Do you know of any electronics component stores on the island? The only one I know of is the "NEC" store on the corner of 58 and 81. It's a great little store, but I'd like to have some other alternatives.

If you're organizing any meetups or get togethers, I'd love to be a part of it.

Looking forward to your reply,
Tim
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