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 by noptical ¦  Sun Apr 26, 2009 1:35 pm ¦  Forum: New Product Ideas ¦  Topic: Serial SRAM ¦  Replies: 3 ¦  Views: 940

leon_heller wrote:It's very easy to buy stuff direct from Microchip, I do it all the time.

Leon
how much do you pay for shipping to UK?

 by noptical ¦  Thu Apr 23, 2009 12:06 pm ¦  Forum: New Product Ideas ¦  Topic: 3.3v Vpack ¦  Replies: 5 ¦  Views: 1365

Yes buying them in quantities is a good value because resistors are something you need all the time and if you didn't already, time to switch to SMD and get yourself an assortment of 0603 or 0805 resistors. 14$ including worldwide shipping http://cgi.ebay.com/50-Value-0603-SMD-Resistor-Kit-0R-10MR-5...

 by noptical ¦  Tue Apr 21, 2009 9:29 am ¦  Forum: New Product Ideas ¦  Topic: trackpoints. ¦  Replies: 7 ¦  Views: 1855

you could use a resistive or capacitance touch panel

 by noptical ¦  Sat Apr 18, 2009 8:59 am ¦  Forum: New Product Ideas ¦  Topic: Break Away Female Headers - How do you cut/break them ¦  Replies: 7 ¦  Views: 2113

As leon said these arent designed for braking, these are: http://www.sparkfun.com/commerce/produc ... cts_id=743

 by noptical ¦  Fri Apr 17, 2009 2:33 pm ¦  Forum: SparkFun Product Questions ¦  Topic: Heat Sock (my wife has cold feet) ¦  Replies: 5 ¦  Views: 1325

You could buy a new wife instead.

 by noptical ¦  Wed Apr 15, 2009 1:49 pm ¦  Forum: SparkFun Product Questions ¦  Topic: 3D stereoscopic PIC game ¦  Replies: 5 ¦  Views: 1339

Hi
That looks great. What LCD is that? And what controller does it use?

 by noptical ¦  Tue Apr 14, 2009 4:18 pm ¦  Forum: SparkFun Product Questions ¦  Topic: What SM Crystal to use? ¦  Replies: 6 ¦  Views: 1140

For watch applications you don't actually use the 32,768khz crystal as the main oscillator, but you connect it to the pins that are tied with e.g. tmr1 which is a 16bit timer (in this case it operates as a counter) so that an interrupt is flagged on overflow, which in that case is exactly every 2 se...

 by noptical ¦  Tue Apr 14, 2009 4:11 pm ¦  Forum: SparkFun Product Questions ¦  Topic: LED brightness Q ¦  Replies: 5 ¦  Views: 942

shizzlehappens wrote:I like The Electronic Goldmine for low cost LED's personally. They also have some decent "mixed bag" sets that make for great parts cabinet fodder.
http://www.goldmine-elec-products.com/d ... ?dept=1088
$0.59 for 6mcd smd leds isn't actually "cheap" :P

 by noptical ¦  Tue Apr 14, 2009 9:19 am ¦  Forum: SparkFun Product Questions ¦  Topic: What SM Crystal to use? ¦  Replies: 6 ¦  Views: 1140

I guess you mean 32.768kHZ? because thats what you use for clocks.

Ebay is the place to look for common things like this unless you want to pay more for shipping than for your overpriced components.

 by noptical ¦  Tue Apr 14, 2009 9:16 am ¦  Forum: SparkFun Product Questions ¦  Topic: LED brightness Q ¦  Replies: 5 ¦  Views: 942

250mcd for a smd led is VERY bright. too bright for an lcd clock for example (if you are going to make one since you mentioned it in the other thread). For cheap leds ebay is your best bet. I got these few days ago: http://cgi.ebay.com/50-PCS-Blue-SMD-SMT-0603-LEDs-Cheapest-on-EBAY_W0QQitemZ17031875...

 by noptical ¦  Sat Apr 04, 2009 12:42 am ¦  Forum: New Product Ideas ¦  Topic: Breakout Boards and SMD ¦  Replies: 4 ¦  Views: 1449

SMD rules, I make all my projects the tiniest possible with a trillion components squeezed into 1cm^2. You don't need to drill the board. They take less space in my component drawers. Even my grandma can solder SMD with the smallest pitch. DIP? Are we in the 80s? Granted some high current or older I...

 by noptical ¦  Sun Mar 29, 2009 12:31 pm ¦  Forum: SparkFun Product Questions ¦  Topic: What's the easy way for mass soldering LEDs? ¦  Replies: 23 ¦  Views: 5017

leon_heller wrote:You won't create reliable solder joints that way.

Leon
Well at least it'll save you a lot of time and you can always fix the joints with a soldering iron, faster than soldering 1000 leads one by one :D

 by noptical ¦  Sun Mar 29, 2009 10:27 am ¦  Forum: SparkFun Product Questions ¦  Topic: What's the easy way for mass soldering LEDs? ¦  Replies: 23 ¦  Views: 5017

Here's something I thought, someone with more experience please correct me if that wont work. Apply solder paste on the holes/pads on solder side of the pcb. Place all the leds through the holes, there will be enough solder paste around the leads. Flip the board (place something over the leads so th...

 by noptical ¦  Thu Mar 26, 2009 1:12 am ¦  Forum: SparkFun Product Questions ¦  Topic: Help my serLCD is brighter than me! ¦  Replies: 3 ¦  Views: 1145

Great, well sorta I take it you are refering to the lcd board not the back pack serial interface thing. I read that the backpack had a pot to do this for you that was preset in manufacture. I dont do much surface mount stuff, and (lol) did not recognise what a surface mount pot looks like :) So on ...

 by noptical ¦  Thu Mar 26, 2009 1:09 am ¦  Forum: SparkFun Product Questions ¦  Topic: Pin Outs on a Prototyping Board ¦  Replies: 2 ¦  Views: 768

Solder headers
Attach female-female ot female-male jumper wires.

http://www.sparkfun.com/commerce/produc ... ts_id=8430

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