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Re: BatchPCB Marketplace Feedback

 by jwd270 ¦  Mon Mar 04, 2013 9:31 am ¦  Forum: BatchPCB ¦  Topic: BatchPCB Marketplace Feedback ¦  Replies: 15 ¦  Views: 10486

In addition to a basic search, the boards should be categorized. It would also be nice to allow the board's creator to upload images of finished and assembled boards.

Re: ADH8066 SMS termination issues.

 by jwd270 ¦  Thu Feb 16, 2012 6:47 am ¦  Forum: Wireless/RF ¦  Topic: ADH8066 SMS termination issues. ¦  Replies: 1 ¦  Views: 876

You need to terminate the text portion of the text message with the ascii charactor 0x1A instead of a carrage return. The data sheet calls this charactor ctrl-z.

Re: Wav player code not compiling, various errors in ardunio IDE

 by jwd270 ¦  Tue May 17, 2011 7:48 am ¦  Forum: SparkFun Product Questions ¦  Topic: Wav player code not compiling, various errors in ardunio IDE ¦  Replies: 2 ¦  Views: 528

Any luck resolving this? I just ran into it my self. The obvious fix is to move the variable declarations outside of the for statement, however being able to enable C99 would probably avoid future problems.

Re: SM5100 Cellular Shield - www.google.com

 by jwd270 ¦  Wed Aug 18, 2010 5:54 am ¦  Forum: Wireless/RF ¦  Topic: SM5100 Cellular Shield - www.google.com ¦  Replies: 15 ¦  Views: 6605

What did you use for the carrier settings? Which carrier did you use?

Re: Electrically conductive tape

 by jwd270 ¦  Wed Aug 18, 2010 5:52 am ¦  Forum: SparkFun Product Questions ¦  Topic: Electrically conductive tape ¦  Replies: 3 ¦  Views: 623

It is conductive both along and through the tape. I have used adhesive copper tape in the past for some shielding experaments and found that the adhesive dosn't conduct very well at high frequencies. Havn't used this specific product though, it looks like the embossed patteren on the tape is suppose...

Re: Compact airsoft-like cannon

 by jwd270 ¦  Mon Aug 16, 2010 10:11 am ¦  Forum: SparkFun Product Questions ¦  Topic: Compact airsoft-like cannon ¦  Replies: 7 ¦  Views: 1176

I know the solenoid valves that come with nitrus kits for cars can handle the pressure (~800-900 psi i believe). THey are 12 volts and a few amps, so you would need a solid state relay or a darlinton pair (etc.) to drive it with a microcontroller. http://www.ajusa.com/details/index/348/0/0/EDE%2072001

Re: Venus GPS and the Binary Protocol

 by jwd270 ¦  Wed Aug 11, 2010 9:27 am ¦  Forum: GPS ¦  Topic: Venus GPS and the Binary Protocol ¦  Replies: 2 ¦  Views: 732

The check sum just tells you that you read the data off the serial port correctly, it dosn't mean that what was sent was the correct data.

Re: Arduino Boot Loader and AVR Studio

 by jwd270 ¦  Wed Aug 11, 2010 9:20 am ¦  Forum: AVR Microcontrollers ¦  Topic: Arduino Boot Loader and AVR Studio ¦  Replies: 3 ¦  Views: 1917

Yep. When you go to the connect dialog box, there is a dropdown box for selecting a baud rate, but it is greayed out. I assume this is the default baud rate and once connected it lets you change it. My current project computer dosn't have the 9 pin serial port on it and I havn 't hotwired my old STK...

Re: ISP, ICSP, UARTS and misteries of programming

 by jwd270 ¦  Tue Aug 10, 2010 8:02 am ¦  Forum: AVR Microcontrollers ¦  Topic: ISP, ICSP, UARTS and misteries of programming ¦  Replies: 4 ¦  Views: 3886

ISP = In system programming (typically through a SPI or UART) ICSP ~ In Circuit Serial Programming (same concept as ISP, different name) A chip that can be programmed/reprogrammed with out removing it from the board will typically be advertised as having ISP or ICSP. Each manufacturer uses a differe...

Re: Arduino Boot Loader and AVR Studio

 by jwd270 ¦  Tue Aug 10, 2010 7:47 am ¦  Forum: AVR Microcontrollers ¦  Topic: Arduino Boot Loader and AVR Studio ¦  Replies: 3 ¦  Views: 1917

In case any one else is looking for this information, the answer is no. I tried it on a Arduino Pro 3.3v. AVR studio 4 expects the baud rate for the STK500 to be 115200, the 8MHz crystal on this board is not ideal for achieving this baud rate. The closest you can get is a 3.5% error. I checked my ol...

Arduino Boot Loader and AVR Studio

 by jwd270 ¦  Thu Jul 29, 2010 12:37 pm ¦  Forum: AVR Microcontrollers ¦  Topic: Arduino Boot Loader and AVR Studio ¦  Replies: 3 ¦  Views: 1917

I have seen in the tutorials that the Arduino bootloader is based on the STK500 bootloader. Will AVR studio recognise the Arduino bootloader as an STK500 for programming?

Re: FAT16 for Atmega

 by jwd270 ¦  Thu Jun 17, 2010 9:07 pm ¦  Forum: Code ¦  Topic: FAT16 for Atmega ¦  Replies: 3 ¦  Views: 1464

I searched there and found a few refrences to FatFs, http://elm-chan.org/fsw/ff/00index_e.html. For any one else on a similar search, it seems the critical error was looking for a library written specifically for Atmel chips.

FAT16 for Atmega

 by jwd270 ¦  Wed Jun 16, 2010 6:49 am ¦  Forum: Code ¦  Topic: FAT16 for Atmega ¦  Replies: 3 ¦  Views: 1464

Does any body know where to find a FAT library for non-Ardunio atmega programming?

 by jwd270 ¦  Tue Jan 12, 2010 6:44 am ¦  Forum: AVR Microcontrollers ¦  Topic: DIY Heat pad? ¦  Replies: 2 ¦  Views: 1210

I would try laminating a coil of 40 gauge NiCr wire with some heavy duty laminating film.

http://jacobs-online.biz/nichrome_wire.htm#what_size

 by jwd270 ¦  Wed Aug 12, 2009 1:57 pm ¦  Forum: SparkFun Product Questions ¦  Topic: AVR32 Board ¦  Replies: 4 ¦  Views: 1134

The AT32UB3 devices were the ones I was interested in. The board in the link was pretty much what I was looking for.

The reason I started the thread here is because I was considering designing a board of my own and wanted to see if there was any interest in this group for this processor.