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  1. donkey

    definately off topic

    but had to put this up cos I am so excited http://www.timeanddate.com/countdown/to?iso=20121113T00&p0=47&msg=BLACK+OPS+2+BIATCHES&csz=1
  2. donkey

    UPS system

    thats about 250 au with postage higher. its new unopened direct from manufacturer but australian plug. my bad maths goes of a rough idea of exchange rates. your total price is roughly £180 the uk gets 2 au for every pound i think so thats about right i think
  3. donkey

    UPS system

    http://www.upssystems.com.au/epages/upup1421.sf/en_AU/?ObjectPath=/Shops/stst13417/Products/PSD1200 for about that price you can get the one i just listed. it is 720watts.
  4. donkey

    3d imaging

    i see alot of these devices. but a few things things kind of get to me. for true 3d you will need to take a few shots. at best 3 but the more shots the better res. 2nd is if I want true 3d I have to take these shots and then mix them together to get the right 3d image. 3rd and this is just me...
  5. donkey

    3d imaging

    hey guys, I have been reading about 3d scanners and printers. I understand the printing can take days to occur. that is fine for me. the question I have is can anyone tell me how long it will take to scan an object? I was thinking of using a few cameras to speed the process. also is there a 3d...
  6. donkey

    telephony question

    could this be either too many handsets or the powersupply needing to be upgraded for more amps?
  7. donkey

    Heating Element?

    I agree. a pot is just a resistor as is your heating element in reality. so rather than having heat from your element it will come through the pot making it hot to touch. pwm will adjust the current by sending it in pulses. by sending it in pulses you can go from 100% current down to 1% (even...
  8. donkey

    programming

    the difference between c and cpp is enough to make you frustrated at times. I found c to be the standard language for most controllers so will use that for now
  9. donkey

    simple current question

    may I be so bold as to ask what sort of safety equipment?
  10. donkey

    Noob question

    an experiment siliar to this was conducted a while back early half of the 1800's. if you use 2 different materials to short the battery then you can make a heat pump. have fun trying that next
  11. donkey

    Please Guide

    http://www.supercircuits.com/resources/tools/Volts-Watts-Amps-Converter watts = amps multiplied by volts = 12v * 20ah =240w add a little on top of this for any resistance in wire, charge controller etc.
  12. donkey

    Want to get into electronics

    motors are always fun to add. then as you advance you can use a microcontroller to input text onto a screen... actually the list is very extensive of what you could do. the thing is what do you want to do?
  13. donkey

    Circuit problem

    I thought it was upside down. still a newbie but I got the concept right i think lol
  14. donkey

    Tilt Sensor Project

    define cheap. if you got a wii nunchuck remote it has a tilt sensor in it. they run for bout $10 on ebay. there are a heap of alternatives but that one is the easiest one I know of
  15. donkey

    simple current question

    batteries in parrallel increase amp hours and batteries in series increase voltage. as for not finding an exact replacementt depending on the circumstance you could use plugpacks, wallwarts, etc. the big thing to me though is the 1800mah rating may not be required. some projects I do have a...
  16. donkey

    Designing a transmitter circuit

    this sounds like homework. I could help a little but if its homework then giving you the answers won't teach you too much. pdf files can be created by alot of programs. usually its as simple as importing a photo into a pdf creator and typing the text. anyway let us know if this is homework so...
  17. donkey

    Circuit problem

    the easy way of doing it is to run an LED accross the 2 pins with a diode to stop it detecting the battery itself. I hope someone can correct me if I am wrong if you use the same jack for both the car lighter as you do for the mains then this won't work
  18. donkey

    solar powered clock

    stupid question here, but why in your diagram do you have a clock and a motor?
  19. donkey

    Simp.e romote control

    RF is good and the NRF24 series offers a cheap way to get into them. there are alternatives to this module and ones that work on different frequencies. the nrf24 series is 2.4ghz so if you have alot of devices on that frequency look for an alternative. most cordless phones, wifi, av senders etc...
  20. donkey

    Hey people!

    hey robotalk. what sort of toys? rc cars? mini computers? sound generators? welcome to the forum chief
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