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  1. chopnhack

    Code needed for PIC16F684 to control LED's

    More than just that - @WHYnot - will you be able to post a schematic? Will this be a simple, scroll by hitting the button again situation? What is the purpose of selecting the output and then a separate button to enable it? This seems to be for a piece of decorative art. I would assume that...
  2. chopnhack

    New to electronics

    Yes, to some extent. That is why I recommended Mims first. Do that to get started followed by Make for the hands on approach to reinforce or correct what you learned in Mims and then when you're ready Practical.
  3. chopnhack

    New to electronics

    First - good general overview without getting too bogged down in details Second - as this has a lot of hands on projects to apply what you learned from Mims book Third - as this is going to be more theory intensive - the first 2-300 pages if I recall correctly are theory - stuff you need to...
  4. chopnhack

    New to electronics

    I would suggest looking at this thread. Specifically look at the post from January 2013. I think that the first recommendation is a good general entry, not complete, but enough to get you going and keep you interested. The second is more hands on, learn via projects, I have not read, but its on...
  5. chopnhack

    wiring a LED lit rocker switch

    Good video @Alec_t , but how the hell does that woman work with those nails! I am sure you all have worked with your nails slightly longer than usual and if you are anything like me, you end up slicing yourself pretty good when doing close up work like that... wow.
  6. chopnhack

    Confused what voltage would be depending on its location?

    Potential (voltage) exists between the two terminals of the battery and thus the attached wires. So in your example there is 5v present between + terminal and Voltage Here - both tags(2) and (3). Regardless of the resistor, this is just the potential between the two points. Kind of like height -...
  7. chopnhack

    New to electronics

    Welcome to the forum Thor! Have a look at our resources tab at the top, we do have some good links there. Edit: So far from the two episodes I have seen he seems to do a decent job explaining the basics. A bit of swearing, but otherwise ok. The explanation on why current goes through his and...
  8. chopnhack

    Newbie needing some assistance with a project.

    Glad I could help you, I am but a newbie here too. This is a search I would use to help you find what you are looking for. Remember to come back and post your success. Good luck!
  9. chopnhack

    Newbie needing some assistance with a project.

    Cool. There are many LED's that are of higher efficiency that don't need a full 15mA to be bright. Look around for superbright or clear lens type LED's many of those should give ample illumination at about 7-9mA so that should help extend your second source's life. The IC itself doesn't consume...
  10. chopnhack

    Newbie needing some assistance with a project.

    It's an ideal solution I think. Just needs an additional power source, so your 9v should work just fine. Incidentally, why not just use a voltmeter when you want to check the status? Is it hard to reach? This device will consume some energy as will the LED's
  11. chopnhack

    What is the name for those plastic clamshells ??

    Are you interested in molex style plugs?
  12. chopnhack

    How to ground unwanted AC from a metal case?

    Exactly. I know Mikael stated that the parts where expensive compared to his investment of $60, but an intercooler by itself should increase the production capacity of the machine by virtue of more fluid reservoir. Not knowing the pressure of the fluid, it would be hard to comment on cost, since...
  13. chopnhack

    Newbie needing some assistance with a project.

    Have a look at the chip that I linked in post #10, I think this is pretty much what you are asking for in a ready made package.
  14. chopnhack

    Newbie needing some assistance with a project.

    Sure, post when you can and lets see what you are thinking! ** I am going to ask the mods to move this from offtopic to perhaps circuit help**
  15. chopnhack

    How to ground unwanted AC from a metal case?

    Interesting problem Mike - I remember the module you made last year, it was quite good! The wall wart is converting mains to lower level ac or dc? Some of the wall warts are simply step down AC transformers, taking, say 120VAC and stepping it down to commonly used AC like 24VAC. It could be...
  16. chopnhack

    Newbie needing some assistance with a project.

    Correct, you would be able to sense from 4 to about 2.5, but lower than that and the diode would not become biased, thus no current would flow and the LED would fail to light up. Even if you used something like a LM3914 you would need an external source, since this IC can run on no less than 3V...
  17. chopnhack

    Newbie needing some assistance with a project.

    The main problem I saw from your initial request is that LED's require a forward drop of about 2 volts. Do you understand what this means?
  18. chopnhack

    Newbie needing some assistance with a project.

    Ok, what research have you done so far to come up with a solution to your problem? There are many ways to approach this problem from μcu to op-amp and other methods in between. What are you comfortable working with? Edit: Does the LED indicator have to be fed off of the battery or will there be...
  19. chopnhack

    Newbie needing some assistance with a project.

    So to clarify, you are looking to produce a battery level meter.
  20. chopnhack

    Back from the Dark Side

    Welcome Back 'Lito! Looking forward to your contributions - haven't seen you since your O-scope posts some time ago :)
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