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  1. Hero999

    project

    How about a fart intensity detector? http://courses.cit.cornell.edu/ee476/FinalProjects/s2009/rac82_mos22/rac82_mos22/index.htm
  2. Hero999

    Increasing the DC 5V 250 mA adopter volt & amp.

    That doesn't make any sense. What do you mean?
  3. Hero999

    Program launch: "Get Paid to Publish your Project!"

  4. Hero999

    Program launch: "Get Paid to Publish your Project!"

    You're right, thanks for signing up and offering an explanation. I didn't understand how it worked but now you've explained it properly I get it. I'm glad to see that the web master has changed it back. I'm sorry about making the mistake but it actually further proves my point: if a design is...
  5. Hero999

    Need to convert a music synthesizer from 110V to 230V.Voltage and fuse questions

    I'd recommend selecting 240V, it should work properly, if not, change to 220V. And yes, change the fuses as recommended by the manual and if doesn't recommend changing the 1.25A fuse, then don't.
  6. Hero999

    components requirements

    Where do you live? Have you checked the usual suppliers, i.e. RS Components, Farnel and Digikey? All the parts seem to be pretty generic and should be easy to replace with similar, if exactly the same parts can't be found.
  7. Hero999

    plotter for pavement

    THat's a good idea, you could use a standard inkjet print head. 1) Paint area white. 2) Use inject printer. 3) Cover with a transparent water proof laquer. Or if it only needs to be temporary, use water soluble paint for #1 and omit #3.
  8. Hero999

    how can i check micro sd card capacity

    Don't buy from someone who cheats you, spend a little more to and buy from an honest supplier. Checking 5000 cards will cost money and it's worth spending what you'd save on testing on higher quality goods that don't need testing.
  9. Hero999

    Is there a suitable transmitter/receiver available for this ?

    What he's chosen to do is not easy and would be a pretty respectable project for a final year of a degree at a reasonable university. There are plenty of cheap affordable radio modules available. The trouble is finding something with accurate enough timing to work out the position of a player...
  10. Hero999

    Increasing the DC 5V 250 mA adopter volt & amp.

    You can't boost both the current and the voltage, the 5V 250mA adaptor is rated for 5*0.25 = 1.25W, you want 2*24 = 48W. Buy a higher powered power supply, there's no other way and it won't be transformerless, all mains power supplies have a transformer, even you little phone charger does but...
  11. Hero999

    Choosing a SPICE program

    I'm afraid you'll have that kind of problem whatever piece of software you use because there's no standard for schematics. My advice is draw the whole schematic in Eagle for the layout and keep LTSpice for simulation, there's often no need to simulate the whole design anyway, it's normally a...
  12. Hero999

    Choosing a SPICE program

    I don't know, I've never tried to do that before. I say probably no, it does have an export netlist feature, but I didn't see Eagle listed in the formats it can export. I don't know why you'd want to do that, you obviously haven't used Eagle that much, it's useless unless you work on both the...
  13. Hero999

    Choosing a SPICE program

    I've used LTSpice under WINE before. It runs just as well as it does under Windows apart from the help file needs to be opened manually, which is a known issue. LTSpice is a great program, although I've not used the other programs you're talking about so I can't advise anything else.
  14. Hero999

    transmitter coming from a computer

    Yes it's possible but it's not a good idea for a first project because it's much more complicated than you think. The output from a USB port is a digital signal, (either on or off, Wikipedia USB for more information), music is analogue signal (a wide range of voltages over a specific rande). A...
  15. Hero999

    PSpice/Spice model for the SN 754410?

    What does the circuit do exactly? Can you post a schematic? It's possible that the frequency and current are too high for a breadboard so even if it works on a simulator that won't be much help to you when you come to build it.
  16. Hero999

    Program launch: "Get Paid to Publish your Project!"

    I can't confirm either way, it was not my idea. I think you should send mixos a private message. EDIT: Don't worry, I've sent him a private message asking the same question.
  17. Hero999

    PSpice/Spice model for the SN 754410?

    Just one question: why? It sounds like you've fallen into the trap of trying to simulate the entire circuit which is probably unnecessary. What are you trying to simulate? Is it a digital circuit?
  18. Hero999

    Program launch: "Get Paid to Publish your Project!"

    The exact wording is "Not published elsewhere on the web." but it doesn't say that you can't put it on your own site after it's published here. I've noticed the same error in another project by the same author. The 10
  19. Hero999

    POWER OFF ON with delay

    What are you asking for? Surely that can be integrated into the microcontroller? If your microcontroller is hanging, it's probably because the power supply is noisy so needs more decouping capacitors and ferrite beads or there could be an error in the code.
  20. Hero999

    Power Supply for capacitor bank

    There are no hard and fast rules for EMC. Use a proper shielded inductor designed for use in SMPSes and keep the traces on the feedback section as short as possible and away from the inductor and MOSFET traces. There shouldn't be any arcing because the voltage is too low.
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