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61  Forum 2005-2010 (read only) / Troubleshooting / Re: Arduino 16 doesnt start!!! on: June 14, 2009, 04:29:10 pm
Yes you do. On the PC that the arduino.exe doesn't work there is an issue somewhere with Java.

It's the same on my PC. It's an annoyance that you'll just have to live with.
62  Forum 2005-2010 (read only) / Troubleshooting / Re: Arduino 16 doesnt start!!! on: June 14, 2009, 03:55:50 am
Double click "run.bat"
63  Forum 2005-2010 (read only) / Troubleshooting / Re: Direct drive 8x8 matrix does not work on: June 04, 2009, 11:53:39 pm
You must have it wired up wrong.

I have used that code, as have many others, and it works.

LED matricies are often a major pain to wire up, both the home-made and pre-built varieties.

It is very easy to get the pin numbering of pre-made matricies wrong. You need to check the datasheet to find which pin corresponds to which row/column. It will definitely NOT be row 1 = pin 1.
64  Forum 2005-2010 (read only) / Troubleshooting / Re: problems with arduino ethernet shield on: May 06, 2009, 06:50:46 pm
The ethernet shield is not hardware compatible as-is out of the box with the mega.

The specific pins that are used to control the shield, the MOSI, MISO, SCK, have moved from digital 10 thru 13 on the older arduinos to some other pins on the mega.

Search the forums for some workarounds - people have sorted this out.
65  Forum 2005-2010 (read only) / Troubleshooting / Re: Pin 1 Problem on: April 14, 2009, 11:24:05 pm
Because the communication with the PC goes through the FTDI chip, and it's the FTDI chip that gets the PC to create a serial port.

If you plug in you arduino to a different USB port, does it come up with a different port number? Mine does. If not, it might be your FTDI chip that is the problem, or the drivers on your PC
66  Forum 2005-2010 (read only) / Troubleshooting / Re: GPS shield and GPS logger on: March 23, 2009, 06:16:36 pm
Try this...

[1] Close arduino IDE
[2] Go into the SD_Log library folder
[3] Delete every file with the extension ".o"
[4] Restart arduino IDE
[5] Push the "play" button
67  Forum 2005-2010 (read only) / Troubleshooting / Re: Standalone Arduino with sparkfun USB - not working on: March 18, 2009, 11:50:54 pm
It won't hurt it to try. Capacitor values can often be an art, not a science!

I'd stick it in and if it works, keep it there untill I could get a 0.1uF
68  Forum 2005-2010 (read only) / Troubleshooting / Re: Standalone Arduino with sparkfun USB - not working on: March 18, 2009, 01:10:08 am
Hey which schematic were you looking at?

If you go here...

the .pdf schematic does show the RTS and DTR lines both connected to RESET via resistors, [size=14]BUT[/size]

there is a note below the link to the schematic

Note that R2 is not mounted and that R3 has been replaced by a 100 nano-farad capacitor.

The newest board schematic shows the capacitor
69  Forum 2005-2010 (read only) / Troubleshooting / Re: Standalone Arduino with sparkfun USB - not working on: March 16, 2009, 11:32:36 pm
No worries - as usual I'll assume the cheque is in the mail.

That tutorial was written before the auto-reset feature was introduced. Notice however this step from the tutorial

"This is where we add the small tactile switch so that we can reset the Arduino whenever we'd like and prepare the chip for uploading a new program. A quick momentary press of this switch will reset the chip when needed. Add the switch just above the top of the Atmega chip crossing the gap in the breadboard. Then, add a wire from the bottom left leg of the switch to the RESET pin of the Atmega chip and a wire from the top left leg of the switch to ground. "

This is how all the arduinos used to be, and the reset button is still there incase auto-reset isn't working. I'd say get this working first before trying auto-reset.

As for how to make auto-reset work, check out the schamtics for the USB breakout board, and the scematics for the newer USB arduinos. I think it's just a 100nF capacitor between the DTR line and the reset pin, but you'll need to check that.
70  Forum 2005-2010 (read only) / Troubleshooting / Re: Standalone Arduino with sparkfun USB - not working on: March 16, 2009, 10:29:24 pm
Sorry not sure, but just to clear things up, if you say burned the "blink" demo sketch to the chip using an arduino board, then popped out the chip and put it in your breadboard, does it flash at a rate of 1Hz? This is a good test to see if your crystal is working.

Secondly, when the chip is in your breadboard, are you resetting the board just (i.e. 1 second) before you start the sketch upload? It doesn't look like you have hooked up the DTR line, so you couldn't rely on the "autoreset" feature. I'd probably choose the "Arduino NG or older with 168" option (if that's the chip you are using) in the Tools->Board drop down.
71  Forum 2005-2010 (read only) / Troubleshooting / Re: Bricked Arduino for Dinner? on: March 19, 2009, 07:44:24 pm
I'm trying to store 4kB (4096 bytes)

Arduino has only 1k RAM if the chip is a AtMega168, 2k if you have a '328

Arduino IDE 14 seems to not work. I get the "sync" error many people have been getting, but good ol' 12 works fine

Have you got the right board selected in the Tools->Board drop down menu?
72  Forum 2005-2010 (read only) / Troubleshooting / Re: Both TX and RX LED's are on at the same time? on: March 17, 2009, 04:35:59 pm
Also do you have anything attached to pins 0 and 1?
73  Forum 2005-2010 (read only) / Troubleshooting / Re: Uploading Program Problem on: March 16, 2009, 05:56:17 pm
@Auger Duval

You have the wrong board selected in the Tools -> Board drop-down

Select the "Arduino with AtMega328" option. Also upgrade to version 0014 of the IDE - the board options are clearer.


You probably have the smae problem, but you didn't post what chip you have. Check to see if the CHIP matches what you have chosen in the Tools -> Board drop down, not just the name of the board.
74  Forum 2005-2010 (read only) / Troubleshooting / Re: Cannot upload - freezes program; prob w/ hardware on: March 12, 2009, 02:34:57 am
There has been an outbreak of people using the wrong setting in the Tools -> Board drop down in the IDE

If you just bought your duemilanove, check if it has a atmega168 or '328 installed.

If it's a '328 you should select the "Arduino with AtMega328" option. I believe this has been made clearer in version 0014 just released.
75  Forum 2005-2010 (read only) / Troubleshooting / Re: Sketch size 0 bytes? on: February 09, 2009, 05:45:53 pm
Have you just installed the arduino IDE for the first time, or just recently upgraded it? Or modified the preferences.txt file?

You can see this error when there is no board selected in the Tools->Board menu.

Try choosing a board, then re-verifiying
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