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Re: BatchPCB Design Failed - Need some help.

 by MrPotatoHead ¦  Mon Oct 25, 2010 8:17 pm ¦  Forum: PCB Design Questions ¦  Topic: BatchPCB Design Failed - Need some help. ¦  Replies: 6 ¦  Views: 1563

Nope. Tech support responded today. My board is ordered. I was just responding to mattylad's comment this morning.

I'll post pictures of the project when everything arrives in the mail.

Quick teaser:
- 8x 1Amp Buck LED driver.
- uC
- 2x 10W RGBW LEDs
- 12 Feet of fiber optic

Re: BatchPCB Design Failed - Need some help.

 by MrPotatoHead ¦  Mon Oct 25, 2010 3:20 pm ¦  Forum: PCB Design Questions ¦  Topic: BatchPCB Design Failed - Need some help. ¦  Replies: 6 ¦  Views: 1563

Why would the batchPCB flag that? I thought something like that would be the ERC only.

Re: BatchPCB Design Failed - Need some help.

 by MrPotatoHead ¦  Sat Oct 23, 2010 12:36 pm ¦  Forum: PCB Design Questions ¦  Topic: BatchPCB Design Failed - Need some help. ¦  Replies: 6 ¦  Views: 1563

I tweaked the layout to provide a lit bit bigger spacing for everything that was tight in my opinion. It still fails. I think it is the inductor footprint. I built the package with a SMD pad for the center and then polygons to make the weird 'c' shape. I emailed tech support.

BatchPCB Design Failed - Need some help.

 by MrPotatoHead ¦  Sat Oct 23, 2010 1:13 am ¦  Forum: PCB Design Questions ¦  Topic: BatchPCB Design Failed - Need some help. ¦  Replies: 6 ¦  Views: 1563

Hi, My current project failed the DRC. :( Unfortunately, your design violates our design rules of 8 mil traces with 8 mil trace spacing. The only orange highlighted things are component footprints. I am 80% sure that those are okay. A 6x6mm 28 pin QFN should not be pushing the boundaries. I know tha...

Re: Buck/Boost Chip for Lithium Battery Application Suggestions

 by MrPotatoHead ¦  Sun Oct 17, 2010 3:00 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Buck/Boost Chip for Lithium Battery Application Suggestions ¦  Replies: 6 ¦  Views: 1724

A single cell Li-Ion cell is 3.6-3.9V. Since the voltage curve is almost flat until full discharge, you could skip the regulator. Virtually every 3.6V IC will work perfectly fine at in that range. A 1000mA cell from sparkfun, http://www.sparkfun.com/commerce/product_info.php?products_id=339 , is a 0...

Re: Eagle Question - How to repeat a circuit many times?

 by MrPotatoHead ¦  Sat Oct 16, 2010 3:28 pm ¦  Forum: PCB Design Questions ¦  Topic: Eagle Question - How to repeat a circuit many times? ¦  Replies: 1 ¦  Views: 687

Found a method. It is kinda crazy, but it gets the job done. :D

viewtopic.php?t=19087

Eagle Question - How to repeat a circuit many times?

 by MrPotatoHead ¦  Sat Oct 16, 2010 1:56 pm ¦  Forum: PCB Design Questions ¦  Topic: Eagle Question - How to repeat a circuit many times? ¦  Replies: 1 ¦  Views: 687

Hi, I am building a 8 channel LED driver right now. It has 8 iterations of a http://diodes.com/zetex/_pdfs/3.0/pdf/zxld1360.pdf buck LED driver with a PIC18F2520 on a PCB. I am using Eagle for this because Eagle rocks. Is there a way to make the LED driver schematic/layout one time and then copy it....

Re: Controlling X number of AC channels the complicated way

 by MrPotatoHead ¦  Fri Oct 01, 2010 3:19 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Controlling X number of AC channels the complicated way ¦  Replies: 8 ¦  Views: 1015

Look at the relay boards towards the bottom of this page. They may not handle the current you need, but it's a nice design you might follow. It uses a driver (a FET if I remember correctly) to isolate the relay from the micro. Not a bad place to start. I wonder if a TRIAC would have better long ter...

Re: Controlling X number of AC channels the complicated way

 by MrPotatoHead ¦  Fri Oct 01, 2010 1:13 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Controlling X number of AC channels the complicated way ¦  Replies: 8 ¦  Views: 1015

Unless it cost 10-20 per channel, I would rather build my own. It is more fun that way.

Re: Controlling X number of AC channels the complicated way

 by MrPotatoHead ¦  Fri Oct 01, 2010 12:43 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Controlling X number of AC channels the complicated way ¦  Replies: 8 ¦  Views: 1015

Do you plan on using a pre-made webserver, or roll your own?
I would prefer to roll my own. It is something that I want to learn
Might be a good place for Opto-22 type modules. A low current 5v input controls high voltage AC.
I looked at their website. Stuff is way out of my price budget.

Controlling X number of AC channels the complicated way

 by MrPotatoHead ¦  Thu Sep 30, 2010 10:03 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Controlling X number of AC channels the complicated way ¦  Replies: 8 ¦  Views: 1015

Hi friends, My brother & are both nerds. :mrgreen: I figure that will help explain why I want to create something complicated that really isn't needed. On with the complicating.. :twisted: My brother has iguanas in his back yard in a big cage. There are 9 of them. As of this morning, I am an uncle t...

 by MrPotatoHead ¦  Tue Sep 29, 2009 2:17 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Constant Current Driver question ¦  Replies: 17 ¦  Views: 4029

waltr wrote:Now that's thinking outside the box. Nice.
Thanks. I am good for crazy ideas. They work most of the time. :?

 by MrPotatoHead ¦  Mon Sep 28, 2009 6:39 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Constant Current Driver question ¦  Replies: 17 ¦  Views: 4029

Idea A (waltr's idea) - Use a uC to adjust the current multiplier of each IC. If you did not care about the safety features (open load, open short, or over temperature), you could drive all IC's in parallel. Idea B (Mike's Idea) - Use a uC to drive the OE pins with a PWM signal. This would be my pre...

 by MrPotatoHead ¦  Mon Apr 13, 2009 8:37 pm ¦  Forum: BatchPCB ¦  Topic: I can't load my order ¦  Replies: 2 ¦  Views: 1435

nevermind. i tried about a million times. it eventually worked. :D

now i wait.

I can't load my order

 by MrPotatoHead ¦  Mon Apr 13, 2009 8:12 pm ¦  Forum: BatchPCB ¦  Topic: I can't load my order ¦  Replies: 2 ¦  Views: 1435

I have been looking forward to trying BatchPCB for some time now. I have this little SMPS to build. 5 sq inches. ~9 Vin ~180 Vout. But I can not get past the shipping options page. I click continue and nothing happens. The browser eventually will time out. Arrrrrrrggggggggggggh!!!! What is the deal?...