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  1. chopnhack

    Headphones repair

    I feel your pain.... I just had to use a micro drill bit to pull out the remnants of a broken headphone adapter that was lodged inside an iPad mini jack. I think the problem is that most of the kids have these bulky covers to protect the device which leaves less of the adapter's strain relief...
  2. chopnhack

    Better understanding of Electricity.

    I don't have a problem with his approach. He is specifically stating that from his experience with a specific subset (young, under-educated adults) that converting the equation to things they can relate to achieves a greater understanding of the material. He is being pragmatic in stating that...
  3. chopnhack

    Making a cap fed supply safe!

    I could argue for an isolation transformer that would have intrinsic fusing to make things safer, but it really depends on the design of the schematic. Specifically the goals needed to be achieved, i.e. - balancing cost with size, etc. Do you have a schematic? One of the safety issues that...
  4. chopnhack

    Help, Newbie Question - Wall Dimmer to LED Driver

    Understood, but the wall dimmer was not designed for these type of LED's (under cabinet low voltage). It was designed for lightbulbs originally. Then when incandescent started getting phased out, the replacement LED lightbulbs were fashioned into the standard shape and sizes to work with...
  5. chopnhack

    PCB Prototype solderless breadboard questions

    Get the cheapest that will get the work done as you may find yourself outgrowing them in one way or another. You may find that you will do more of your projects with smd and then these boards will be fairly obsolete for that purpose. The second link to allied express that you said is the correct...
  6. chopnhack

    High Precision LED Absorbance Measurement

    @hevans1944 Brilliant!
  7. chopnhack

    Help, Newbie Question - Wall Dimmer to LED Driver

    Maybe you can use this with your driver.
  8. chopnhack

    High Precision LED Absorbance Measurement

    I think that this would be a great change to make, using a constant current source for the LED would stabilize the heat produced, it would reach homeostatis with the environment, aluminum housing, etc. Would all of the solutions be of equal temperature? Some solutions are super saturated by...
  9. chopnhack

    PCB Prototype solderless breadboard questions

    2nd that!! For about $2 you can just buy the breadboard itself, which has 830 points, even ten of these are not going to set you back too badly. Granted, you would need to use jumpers between boards, but for the $$$ I think you would be better served going this route unless you are...
  10. chopnhack

    Including header files

    Hi Sadler, he is saying that tongue in cheek. I would rewrite the above statement and substitute adept with inept. For real coding help get with Supercap2F, I nominate him our coding guru at the moment. Long and short, create your header file with definitions, make sure its in the same...
  11. chopnhack

    PCB building

    Very nice Constantine, clean down to .015! I see you are converting to useful currency ;-)
  12. chopnhack

    SUPERCAPACITORS

    Not sure I understand, using an internal combustion engine which is relatively inefficient to then store a charge, where again we lose some efficiency does not equate to an environmentally sound energy policy. Now, if you want to charge the cap from arrays of solar cells, I can understand that...
  13. chopnhack

    SUPERCAPACITORS

    Assuming this formula is correct: Energy (Joule) = ½ x Capacitance (Farad) x Voltage^2 (Volts) 5,000 x 144 Joules = 720k Energy (Watt hour) = Energy (Joule) / 3600 (sec) 720000/ 3600 Watt hours = 200 or 0.2kW/hr Don't forget, you won't be able to completely discharge the cap nor should you...
  14. chopnhack

    SUPERCAPACITORS

    Power is equal to voltage x current. Without more information, namely at what voltage this capacitor has been charged it will be hard to answer. Is the IC running a small alternator from an automobile? That would be a 12vdc system. Also, its considered impolite to use all caps. It's the...
  15. chopnhack

    Where can I get LCDs that are used in calculators/watches?

    I would try E-Bay for that particular part, E-Bay is a portal to the factories in China, of course you have to beware of counterfeit parts, etc. but for pricing, they are hard to beat. As for 10 years on a CR2032, I don't think so, theoretically yes, but in practice I doubt the battery will...
  16. chopnhack

    Hacking a microwave oven

    This video is from our friend that brought us the 'scariac'! Beware...
  17. chopnhack

    Mixing Woodworking and Electronics

    I am pretty sure you will have a night and day difference between the units! Cool, I hope Santa pulls through for ya! As for tips, so far I have gotten much use out of my beveled tip (looks like a hoof) for drag soldering those tiny pins and then a standard smaller chisel tip. I think the real...
  18. chopnhack

    Hi, I'm Cris

    A lot of casework lately, cabinets and closets, linen closets - so finish carpentry. In the past I have made a walnut rocking horse, several pirates chest, etc. How about you?
  19. chopnhack

    Mixing Woodworking and Electronics

    If you haven't decided yet, I have been using my Hakko for about a year and I love it. I have the FX-888D. Comes up to temp very quickly, holds temp and is a treat to use compared to the old stick iron I had before.
  20. chopnhack

    Another basic kit question - about components this time

    I found an index file box to work wonders with keeping resistors organized - so long as they come with the taped edges. I sort by first number, i.e. 100, 10k, 100k,1M all go in the first space, the next space gets all values of 2, etc. They are organized in ascending value, easily accessed and...
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