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  1. foTONICS

    Searching for a PIC dev board

    Thanks steve, I'm definitely going to look into that!
  2. foTONICS

    Searching for a PIC dev board

    Hey all, So I'm searching for a dev board to enhance my studies while at school. I've done a little searching but nothing really comes up that seems right. I'm a bit of a PIC fanboy, I want some LED's attached to the board so I can see if a program works, and I want to code in assembly. Ones...
  3. foTONICS

    Duncan amps PSU designer

    Thanks a lot, this answers a few problems I was having with the design stage of this
  4. foTONICS

    Duncan amps PSU designer

    I'm working on this assignment where I need to use Duncan's PSU II designer to model a supply but I'm having a little trouble understanding the purpose of RL. I'm supposed to be feeding this VDC (output of the bridge recitifier after the secondary of the transformer) into an LM117 regulator and...
  5. foTONICS

    multisim convergence assistant

    The one on the right "U2" is my voltmeter, the one right after my regulator "U3" is my ammeter
  6. foTONICS

    multisim convergence assistant

    So I'm trying to build this basic cct to regulate 12VDC, I just wanted to add an ammeter to see how much current I'm drawing but I keep getting this confounded assistant that rarely fixes the problem. I'm pretty sure it's the ammeter that is causing the problem but why, is it just that im using...
  7. foTONICS

    can't remember the name of this chip

    so i can't remember the name of this chip but i know what it does. I believe its a type of op amp or maybe a configuration of one, or just its own chip all together. it's used for noisy signals, only changing states (between high and low) when a threshold is crossed. so say once it goes high...
  8. foTONICS

    multisim questions

    Hey all, so I'm simulating this basic regulator using an LM117 and I have a few questions. 1. I used a voltage divider with a trim pot to the input of the LM117 so I could see the effects of insufficient voltage on the output. This version of multisim I'm using has the feature of resistors...
  9. foTONICS

    CRT anode voltages

    So I was going through the book (PDF) and noticed a typo. It has the anode voltages of A2 and A4 the same, to my knowledge they should be linear in terms of increasing voltages. Does anyone know what I should correct the A2 voltage as? I've attached a screenshot of it. (taken from 'Newnes...
  10. foTONICS

    nesting a program with a bool statement

    I made the changes and it works now. Thanks for the help!
  11. foTONICS

    nesting a program with a bool statement

    these are very useful hints, ill make those changes and let you know how it turns out -thanks again!
  12. foTONICS

    nesting a program with a bool statement

    so I have this program that asks a user to enter a time(24 hour clock) and spit out the next available flight. the program works except for one thing: I've tried to get it to loop until a user chooses to quit (giving the variable <int action> a value of 2) but no matter the value of <action> the...
  13. foTONICS

    old laptop

    so as far as connecting this goes. There is no jumper pin that lets me choose between slave and master, would this be a problem? I have attached some photos for reference. should i be storing this thing in a anti static bag or are they pretty resilient?
  14. foTONICS

    old laptop

    so i have this laptop that recently went past its prime. if i wanted to harvest the hard drive out of it to use as an external drive can i just pull it out or is it more complicated than that, does it need to be specially formatted?
  15. foTONICS

    PIC Delay

    Edit: just realized harold just said that
  16. foTONICS

    PIC Delay

    Then just nest a timer that is a factor of the total time you need inside another loop which counts the number of times the inner loop runs
  17. foTONICS

    PIC Delay

    Why dont you just force a value into the timer and compensate for the missing instruction times?
  18. foTONICS

    Light Photo-sensor Timer Help Please!

    And this was all discovered 3 days before the project due date
  19. foTONICS

    Light Photo-sensor Timer Help Please!

    My favorite one was a group of students that tried to send messages Wirelessly between LCD's. They procured some code from somewhere, copy+paste into MS word, then copy+paste into the IDE then were dumbfounded when nothing worked. To keep this explanation short just imagine all the autocorrect...
  20. foTONICS

    Light Photo-sensor Timer Help Please!

    i work for my school helping students troubleshoot labs, give advice, and test and repair lab equipment. Now that you mention it this is exactly what these guys are doing. I get these same type of questions all the time, especially when the mention of microprocessors and LCD screens. It's...
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