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  1. chopnhack

    automatic water pump

    Ah, yes my mistake. When I first thought of the problem I was thinking constant flow of water under a constant pressure. You are correct, pin to a motor - you will have to figure the delay for priming the motor, head, delays to steady ouput if there are any, etc. to come up with the an...
  2. chopnhack

    automatic water pump

    My guess would be that you would need to know when the valve opens to start the cycle and then use the internal clock or feed an oscillator into the μcu to keep track of time. Then program the μcu to fire the solenoid at appropriate times.
  3. chopnhack

    Learning C language

    There seems to be a disconnect between the theoretical and the applied. I took a MIT course 6.002 circuits and electronics that was deeply theoretical. Hard to keep up with... Thanks for all the information, and yes, the course you linked was orders of magnitudes cheaper!! LOL Thanks again mate.
  4. chopnhack

    Learning C language

    That is quite interesting Baxter and I wish you well on your studies. I am a hobbyist, I am not sure if I would change my career path, but if the cost is not too high, I would consider following a curriculum to learn more. Can you post the school you attend or privately link me? I did a search...
  5. chopnhack

    Learning C language

    I did look around this morning at a few, some where absolutely exorbitant here in the US, charging anywhere from $500-$1000+ per credit hour with one program at 164 credit hours!! A little rich for my hobbyist blood to say the least. I hope you had better pricing with your school!
  6. chopnhack

    Learning C language

    Hi Baxter. I was curious about the course you are taking. Would you recommend it? What is the name of it if you don't mind me asking?
  7. chopnhack

    Curious about red residue

    Hi Ryan, it could be potting compound. Essentially a glue the manufacturer of the board uses to keep components in place during soldering and in some cases to lend some strength to the taller pieces of the board. (edit - true potting compound is used to totally encapsulate a board)
  8. chopnhack

    Read and try not to laugh...

    Watch out for those noozles! They are always up to no good! I was once bamboozled by a floozle, who was cousin to a noozle. Ye have been warned :p
  9. chopnhack

    Have to share pic

    Alvin! How did you post that with dial up??
  10. chopnhack

    Precision power supply Question...

    Hi medictrode, please share your designs, I would love to see what you have come up with as I have an interest in building some bench power supplies. Thanks in advance.
  11. chopnhack

    Help with a flasher circuit with 555 Timer IC

    I noticed, LOL.
  12. chopnhack

    Looking for recommendation for a good soldering iron

    I have been very satisfied with my Hakko FX888D - not sure of price in your market, but it is a very capable and efficient solder station.
  13. chopnhack

    Help with debounce code

    Thanks Steve. Hopefully as I go through more of the book, this will get clearer and perhaps other methods of approaching this will be seen. There are sections of the book that deal with functions and libraries. I am excited to get to that section!
  14. chopnhack

    My Introduction Thread

    Welcome Andrew! This is a great site for advice, knowledge and ideas. Have you started to read any books on electronics? We have a thread on the site with regards to favorite reads. The one that I first read when I had an interest was Getting Started in Electronics by Forrest Mims
  15. chopnhack

    Help with debounce code

    It was the speed of execution. I had to "forever loop" each individual statement to get it to work- thus keep polling the switch for change.
  16. chopnhack

    capacitor equivalent

    The digikey link above sells single qty and more. Not sure on shipping, you may have to call.
  17. chopnhack

    Help with debounce code

    Thanks Steve. I appreciate the time you took to break that down into logical steps. Odd thing is, I thought that is what i accomplished with my if,then statements. The entirety is wrapped in an endless loop, which had me thinking that perhaps after the first delay, the next bit of code is only...
  18. chopnhack

    Help with debounce code

    Thanks Steve. I am aware of the method you mention, I have read about it in other books and online. I am following the text so that I don't get confused or lost! LOL The debounce method listed above does work (I increased it to 40ms), but it still works. The problem I am having is that I am not...
  19. chopnhack

    Help with debounce code

    Hello all, just dabbling with a bit of debounce code. Following along in the book "PIC MCU Programming" by Bert van Dam. I would highly recommend it for anyone who is feeling challenged by the disconnect between programming and the hardware interface of PIC's - this book seemed to break it down...
  20. chopnhack

    Smartphone spectrometer

    Well, maybe not yet, but with quantum dots it maybe sooner than you think! http://www.zmescience.com/research/technology/spectrometer-small-smartphone-053434/
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