Search found 42 matches

by evanrich
Mon Jun 06, 2011 9:52 pm
Forum: SparkFun Product Questions
Topic: How to isolate 5v to program Atmel chip only?
Replies: 1
Views: 273

How to isolate 5v to program Atmel chip only?

Finished building my project today, minus battery, and tried to program it using my usbtiny ISP (from adafruit). I first tried programming it using the 5v from the usb (using the jumper) but i got an error as if the chip couldn't be talked to. I then tried plugging in my usb connector and jumping th...
by evanrich
Thu May 19, 2011 9:01 am
Forum: BatchPCB
Topic: Processing
Replies: 9
Views: 2567

Re: Processing

Is there some way for BatchPCB to be a little more visible wrt to what's happening with panels in process? For example, the panel with my board, "1297", has been "processing" for a couple of weeks now. If I click "More" on the status monitor I see how full the current panel is and, as of now, that ...
by evanrich
Thu May 19, 2011 8:59 am
Forum: BatchPCB
Topic: Standard drills - what should I use?
Replies: 10
Views: 2251

Re: Standard drills - what should I use?

can't really answer your question, but I've used all different sized drills that are standard choices in eagle, and never had an issue. Also, why don't you go check goldpheonix's website, since they're the supplier.
by evanrich
Thu May 19, 2011 8:57 am
Forum: BatchPCB
Topic: Processsing.................................................
Replies: 8
Views: 1938

Re: Processsing.................................................

I'm hesitant to use this service for this reason! For the price I am willing to wait 2 weeks. But anything longer than that is bonkers. There are company's out there can do $33 dollar boards in a days! :shock: Then go with those companies. With BatchPCB you usually get double your order for free......
by evanrich
Tue May 10, 2011 11:08 pm
Forum: BatchPCB
Topic: Anybody uses this pneumatic dispenser ?
Replies: 5
Views: 2440

Re: Anybody uses this pneumatic dispenser ?

http://www.ohararp.com/ Thats the one. Thanks for posting the link. I've done 4 stencils so far from this place and I am completely satisfied by the results. My recommendation, you get 8.5x11" for 25$+shipping, so fit as many designs as you can on that sheet to maximize your value. They ship them c...
by evanrich
Mon May 09, 2011 9:38 pm
Forum: New Product Ideas
Topic: Bluegiga WT11 or WT12 with breakout board for Bluetooth HID
Replies: 12
Views: 9647

Re: Bluegiga WT11 or WT12 with breakout board for Bluetooth HID

What is the purpose of L1? the bluegiga datasheets don't show any inductors. The WT12 design guide from Bluegiga's tech forums contains the following: You should make pads for two bypass capacitors near the 3V3 pin of the module. One capacitor is from 10 nF to 100 nF. The other one is meant to filt...
by evanrich
Mon May 09, 2011 7:21 pm
Forum: New Product Ideas
Topic: Bluegiga WT11 or WT12 with breakout board for Bluetooth HID
Replies: 12
Views: 9647

Re: Bluegiga WT11 or WT12 with breakout board for Bluetooth HID

What is the purpose of L1? the bluegiga datasheets don't show any inductors.
by evanrich
Sat May 07, 2011 12:59 am
Forum: BatchPCB
Topic: Anybody uses this pneumatic dispenser ?
Replies: 5
Views: 2440

Re: Anybody uses this pneumatic dispenser ?

Have to agree. Go the stencil route unless the board is small and no fine pitch. I recently switched to stencil use when I had a PCB with 0.5 pitch connector and some 20 pin QFN devices on it. Worked first time and so did the other 2 boards I did. Won't be going back to the pneumatic tools again. D...
by evanrich
Thu May 05, 2011 1:22 pm
Forum: SparkFun Product Questions
Topic: Advice on Battery Powered Wireless LED Display Project
Replies: 3
Views: 617

Re: Advise on Battery Powered Wireless LED Display Project

If you're planning on interfacing with an off-the-shelf bluetooth keyboard, they often use the bluetooth HID profile. Most bluetooth modules won't act as a HID host. I don't have any experience with the bluegiga, but a quick search makes me think it won't. If your keyboard supports SPP, or if you'r...
by evanrich
Thu May 05, 2011 12:21 pm
Forum: SparkFun Product Questions
Topic: Disable device if a product code is not updated monthly HELP
Replies: 6
Views: 729

Re: Disable device if a product code is not updated monthly HELP

This sounds like a good way of preventing use of uncalibrated devices. Anyway, my approach would be to use an RTC aswell. And everytime you update it, store the current time(time@update) to EEPROM. Then in your code, compare the current time/date to the time@update in eeprom. if it is greater than ...
by evanrich
Thu May 05, 2011 9:29 am
Forum: SparkFun Product Questions
Topic: Disable device if a product code is not updated monthly HELP
Replies: 6
Views: 729

Re: Disable device if a product code is not updated monthly HELP

"HELP" does not guarantee "help" You might be able to use a RTC (real time clock) chip, such as DS1307 to keep track of the date. Put code into your program that has a hard coded date, such as say "Jan 1/2012". Have your code check against this date to see if the RTC date is above or below this date...
by evanrich
Wed May 04, 2011 11:09 pm
Forum: SparkFun Product Questions
Topic: Advice on Battery Powered Wireless LED Display Project
Replies: 3
Views: 617

Advice on Battery Powered Wireless LED Display Project

I've been working on a project that was to challenge my abilities to design circuits from schematic to board, as I'm always trying to teach myself new things. I recently had an idea for a LED sign (like you see in stores, cabs, train stations, etc) but the twist was that it would be battery powered ...
by evanrich
Sun Mar 27, 2011 4:42 pm
Forum: BatchPCB
Topic: I need one LIS3LV02DQ breakout board
Replies: 2
Views: 1055

Re: I need one LIS3LV02DQ breakout board

just buy a stencil, a toaster, and some solder paste and reflow it yourself.
by evanrich
Mon Mar 21, 2011 1:44 pm
Forum: BatchPCB
Topic: Possible to get my Gerber's sent back to me?
Replies: 1
Views: 1076

Possible to get my Gerber's sent back to me?

This might be a strange request, but is it possible to get my gerbers sent back to me? After submitting a design to BatchPCB and placing an order, My machine at work got a virus that was going around through our email, and I had to get my drive completely wiped and re-imaged. Because of this, I lost...
by evanrich
Fri Mar 18, 2011 3:07 pm
Forum: SparkFun Product Questions
Topic: Android/Bluetooth driven wireless LED sign
Replies: 0
Views: 482

Android/Bluetooth driven wireless LED sign

I had an idea for an LED sign that could be programmed via cell phone. I purchased two of these: http://www.sureelectronics.net/goods.php?id=1122, as well as their demo board to try and get started learning how to use these things. I was wondering if anyone had a good beginners resource for working ...