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  1. chopnhack

    Designing a Time Delayed Relay

    That's the hard part!! There is so much cool stuff vying for my time it's disorienting! And it's a great problem :D I am watching a course called Understanding Modern Electronics - its 24 half hour lectures, I'm on the eighth one - transistors as amplifiers. The professor was talking about...
  2. chopnhack

    Suggestions for building a PIC dev. board?

    As for a generic board, what would you include on that kind of board? Power supply in, pic, associated passives, icsp, some type of pin out header...? What else for a generic board?
  3. chopnhack

    Designing a Time Delayed Relay

    Ok, how about Rocky II, 14th round? LOL not quite the heavyweight champion, but getting there? :D:p Thanks bud! Not so sure about stride, I have lost my direction a bit - so many cool distractions just came in the mail, now at least that the board is made up and out of the way I can try and...
  4. chopnhack

    Suggestions for building a PIC dev. board?

    I had the zif on hand so I figured on using it for something. It must be my misunderstanding then, I thought the purpose of a dev.board was for learning and testing out how chips work, without the chip becoming a permanent addition to the board. That is what I thought also when I saw the...
  5. chopnhack

    PIC emulator software

    Please do, I can learn vicariously!!
  6. chopnhack

    Suggestions for building a PIC dev. board?

    Agreed, I just had some beginners luck on a project that had a 8 pin soic that I drag soldered and it was a breeze - I think the trick is to solder underneath a layer of flux gel. My point was that with a dev. board, you should be able to easily insert and remove the chip to go from tinkering on...
  7. chopnhack

    Suggestions for building a PIC dev. board?

    Understood, I was just trying to start small to grasp the concept. I agree that 8 pin pic's are limited, but I think my knowledge is more limiting right now that the chip! As for the 44-pin TQFP, I think they are awesome, but breakout boards for these all require you to solder them to the board...
  8. chopnhack

    PIC emulator software

    I hope the bike ride was therapeutic! It is a gorgeous day out!! I spent it working on my farmer's tan taking down Christmas decorations :D Sourceforge is like a dropbox for developers, you will have to email the author directly for assistance. This link takes you to page where you can contact...
  9. chopnhack

    Designing a Time Delayed Relay

    Thanks Kris :) "Just" you say?? LOL, the control journey now begins! If this was Lord of the Rings, I would say we are at Book 1 after taking refuge in Rivendell - LOL, so many roads to cross yet!
  10. chopnhack

    Single Transistor Circuit Current Question

    Wow, you were right! The voltage across the LED's was 2.7-2.8 (they were all green, same lot)! And there is 0.35V across the resistor. Transistor Readings are as follows: Vbe = 0.7V Vce = 3.7mV Thanks Kris, it makes more sense now, I didn't realize the LED's had a higher potential across...
  11. chopnhack

    Designing a Time Delayed Relay

    Thanks Dave! I have never soldered this many pieces in a project before, it was a long several hours, but I went slow and paid attention to learn as I went. I also tried to remember all I had read and watched about soldering. Helped quite a bit! Here are a few pics of the finished board.
  12. chopnhack

    Designing a Time Delayed Relay

    Christmas arrived at my house today :):D:):D:):D I don't know what to do with myself - the boards and my PicKit3 came!!! Abandon all theory and reading on programming - it's hands on time! :D:D I am very proud of my first drag solder operation: Not so much my first 0603 - I had to remove...
  13. chopnhack

    Simple project needed

    Certainly more interesting, but he wanted simple. I think Bob nailed it with the transistor turning on the motor. I would love to see what impos1 does with this. @impos1 - Did you see BobK's suggestion?
  14. chopnhack

    Single Transistor Circuit Current Question

    Thanks Duke! I keep forgetting about that diode in the transistor! Assuming a 0.7 volt drop for the transistor and the rated drop for each LED of 2-2.2v, max v drop is 7.3v. Leaving ~1.4v across resistor, 1.4mA (matches roughly what the simulation is stating of approximately ~1.5mA). I wonder...
  15. chopnhack

    Single Transistor Circuit Current Question

    Self assigned work, not homework, but seemed more appropriate to post here. I built a small circuit from a video course I have been watching. The assignment is below, but I modified it to work with parts I had on hand: Namely, I didn't have an LDR nor a small incandescent bulb, so I just...
  16. chopnhack

    Suggestions for building a PIC dev. board?

    Thank you for the input Bob :) - I was thinking of creating a board to use for various projects as I learn PIC programming. I wanted to have the flexibility of scaling up to different chips as I expand my knowledge, but I would be content to produce a board with support for just the 8 pin dip...
  17. chopnhack

    Potentiometer characteristics

    Please don't on my account, I have a thick skin anyways :-)
  18. chopnhack

    New & Willing to Learn!

    Cool, welcome to the forum!
  19. chopnhack

    Suggestions for building a PIC dev. board?

    If using the transistor to power an output device that requires more current than the PIC port can output, the transistor is used to provide the extra current. But if we don't need as much current to power the output device, we can reduce the current to the base of the transistor which will...
  20. chopnhack

    Suggestions for building a PIC dev. board?

    I think I see what you are getting at - the transitor's are there to boost the current, if you don't need as much current you can dial back the base resistor. That way if you need to power something that is in excess of the pic's capability, you can. Do I have this correct? The board above is...
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