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  1. chopnhack

    automation system

    Caner, there are many home automation systems commercially available for purchase. Browse the internet for some ideas on how they function, the peripherals used. Many will include photos of the hardware, you can probably get a good look at some of the components. Good luck with your work.
  2. chopnhack

    Help with a PIC12F1571-I/SN?

    Thank you all, I didn't realize the Eagle software was solely for PCB production. I only recently downloaded it and started working with it. I also have LTSpice and started modeling the circuit there, but was referred to Eagle for PCB layout. From what I understand, LTSpice can do the layout too...
  3. chopnhack

    Help with a PIC12F1571-I/SN?

    Thanks Harald, that will help for PCB layout. But if I wanted to model this project, what would I do?
  4. chopnhack

    Write Only Memory (WOM)

    LOL, INPUT PROTECTION All terminals are provided with slip-on latex protectors for the prevention of Voltage Destruction. (PILL packaged devices do not require protection.)
  5. chopnhack

    Help with a PIC12F1571-I/SN?

    I am looking for a model of this IC for use in Eagle. Does anyone have a resource on it? PIC12F1571-I/SN Thanks.
  6. chopnhack

    Computer Software to Simulate Circuits?

    Thank you Harald :-)
  7. chopnhack

    Computer Software to Simulate Circuits?

    I resolved the problem, there was a carriage return entered involuntarily by the txt editor causing a break in the data! Thanks. As for the above comment, I don't understand, I thought the simulator used the vital model information like Vbrk and Iave to perform its computations. Can you...
  8. chopnhack

    Computer Software to Simulate Circuits?

    I tried the method Harald outline with limited success. I was able to get a 1n4004 diode included in standard.dio, however when you look up the item, the specs are blank?! No breakdown voltage listed, no amp carrying given - the fields are just blank.
  9. chopnhack

    Who etches photoresist PCBs?

    Skip the light box altogether! Got a clothes iron? I have also read recently somewhere that instead of purchasing Ferric Chloride, you can use muriatic acid - which is far easier and cheaper to obtain. Masons use it as do pool cleaning companies. I take it that pools are not as plentiful in...
  10. chopnhack

    Designing a Time Delayed Relay

    A friend of a friend has a programmer, but in case that falls through I did find it for about 1/2 price :-)
  11. chopnhack

    Designing a Time Delayed Relay

    Awesome, thank you for the explanation, it makes much more sense in how it works and why the 5A version would still produce the desired effect. I was afraid that since the rated amp's weren't close to what the motor may draw the chip might get damaged. But checking the datasheet, the chip can...
  12. chopnhack

    Designing a Time Delayed Relay

    I was thinking that the 30A rating would be safer to use - current carrying capacity. But what you are saying is that we could use the 5A version because? My guess is that we only need to see the "turn on" spike in current and that would be at least 5A? We don't necessarily care if it goes...
  13. chopnhack

    Designing a Time Delayed Relay

    Nah, there are always more projects begging for time and interest!!! Ok, so, more questions: Will using the pic allow an "on" delay as well as an "off" delay? I assume that its just a matter of programming since the wiring to the relay is in place. Can the ACS712ELCTR-30A-T be substituted for...
  14. chopnhack

    Computer Software to Simulate Circuits?

    Interesting program, I am toying with it now. I tried to change the attributes of a npn transistor, but it wont allow me make the changes? It allowed me to do so on resistors and caps... Is there a way to import more components or to build your own from spec sheets? The add a component feature...
  15. chopnhack

    Designing a Time Delayed Relay

    That is really cool! I have been interested in learning more about arduino's and I believe that they can be used to program pic's or at least be used as a go between pc and pic. Resolving the unintended turn on is awesome as well!! No, I am ok with making multiple board, but can not put them...
  16. chopnhack

    Designing a Time Delayed Relay

    I think the sensor method is best, despite the difficulties of the SMT mounting/soldering. I take it that you have in mind to mount components on both sides to make the board as small as possible? Ideally this would fit into a 10.16cm square steel electrical box that will also have the outlets...
  17. chopnhack

    Battery Control Laws in Canada?

    Agreed, and you are right, you would be wasting your money. This is a specialty - essentially it would fall under manufacturing/resale laws. I would look for a lawyer that specializes in these areas. They may be difficult to locate, because big companies usually have this type of legal support...
  18. chopnhack

    Computer Software to Simulate Circuits?

    Does anyone know of free software that can emulate circuits? I have done some research and found things like Eagle and Spice. Eagle not being free and somewhat confusing looking for a newbie, I looked at the Spice program and from what I understood it can map the output of digital i.c.'s. But is...
  19. chopnhack

    Battery Control Laws in Canada?

    For what it's worth, you should seek out legal counsel on this matter. Many folks may be able to provide anecdotal information or point you to some laws, however, none will be in court with you if something should arise. Best of luck, sounds like you found a great niche market ;-)
  20. chopnhack

    Designing a Time Delayed Relay

    Kris, do you think this project would be best served by having a pcb printed for it? After breadboarding to make sure everything works as intended of course. Would the digital ic's require special consideration in layout because of the high voltage circuit that is incoming?
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