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  1. donkey

    Inverter question / Solar System - Check My Work?

    in that case ebay or catch of the day sites or others similiar are your friend
  2. donkey

    Inverter question / Solar System - Check My Work?

    http://www.jaycar.com.au/productView.asp?ID=MI5160&CATID=8&form=CAT&SUBCATID=680 dunno how many watts you wanted... but there's a start... the price is australian hope that doesn't deter you. if you have to convert to another country just try googling the product
  3. donkey

    need 240 vac to 12 vac transformer

    i googled the plugs you are talking about. they seem to be iec or standard australian house plugs.is this for a laptop or something else? anyway as from what i have seen is the australian standard try google.com.au or ebay.com.au to start. here in australia we have a few electronic suppliers...
  4. donkey

    IR LED's for a touch screen. HELP!!

    hi just a quick thought. i am assuming that the touchscreen will be connected via a usb port for input signals. when doing your calculations remember that usb's supply 5volts. the current on usb 1 and 2 is 0.5A and usb is 0.9A. there are usb cable that double the voltage if you need it and...
  5. donkey

    real world applications and explanations

    i know that electronics cover a vast majority of applications but is there somewhere that shows the schematics and describes the function of each component in plain english? i give the example of a capacitor, it can be used for a few different things from storing electricity to filtering out dc...
  6. donkey

    electronic chat

    steve this is by no means for me alone, i was thinking of using an open chat for a vast majority of beginners. i sincerely thank you for your efforts and hope this takes of but once again its for the community to understand things. i might start with a forum heading in the homework section then...
  7. donkey

    the opposite of a RELAY

    i hope you understand what i meant by pressure switch(may be called something totally different). like a fuel gauge in your car, when you get close to empty you get the fuel indicator. instead of the fuel indicator you activate the parachute though. am researching it now to see if its viable
  8. donkey

    the opposite of a RELAY

    could you use some sort of pressure switch within the fuel housing? when it is empty the switch closes and activates the secondary switch. maybe a big task. also what weight differential is there between a 9v and 2 AA is that an option? as i said i am new to this and have only the basic ideas. i...
  9. donkey

    the opposite of a RELAY

    you can use a spdt relay just connect it so the relay is no, when the connection to power is lost it will go nc activativng the second circuit. being a rocket mass = extra fuel so have you got the second circuit running of the same batteries or are you using extra...
  10. donkey

    just brilliant

    to date i have used this forum irregularly but hope to change that. I have found most moderators and senior members to be both knowledgeable and kind. I fear that my hobby will soon consume the vast part of my day as i prepare for an electronics trade one day. i hope you guys can help me grasp...
  11. donkey

    electronic chat

    i know brisbane is big, but transport for me is a problem, as is money to travel to and from. thats why i thought about it on here. i was hoping to review certain material and get feedback as i do it but rather than having a list of topics to go through we could narrow it down to one area per...
  12. donkey

    how to charge those capacitors please ?

    hi butcher. saw this post and as i live in australia i cannot carry a stun gun legally. i advise you to buy one if its legal. the reasoning behind this is if it is legal to carry a stun gun then the ones sold in shops will be held to a standard that will protect you but not kill them. also they...
  13. donkey

    electronic chat

    EDIT: See the 5th post in this thread. It may be useful. It's an experiment. (*steve*) hi thee. i was wondering if there was anyone with time and knowledge to help me out with electronics. i know basics but cannot figure out quite alot on my my own. these forums are good, however i read...
  14. donkey

    Linking Computer Power Supplies

    hi i saw this post and had to ask, what stereo are you using maybe we can figure out the exact transformer needed from there
  15. donkey

    a little program that may help

    i went looking for a cad program to help draw my circuits. I was told by a few people they use paint as its simple. I wanted something easy myself and stumbled accross tinycad. seems easy there may be restrictions. http://tinycad.sourceforge.net there are a multitude of free cad programs that...
  16. donkey

    thumbsticks

    i was looking at analog as i "believe" it is easier to design a circuit. I am a novice so hope not to need too many ic's. but if it comes down to it then i will have too. the reason for the pot design is if i move the stick a little the camera moves slow move the stick alot the camera is like a...
  17. donkey

    thumbsticks

    the idea is linked below where j is the joystick and 1-4 are the switches. when i press 1-4 it actives that camera alone for both viewing and panning. http://imageshack.us/photo/my-images/121/joysticksetup.png/ so i was thinking of using a 4pdt switch 1 pole for each motor 1 pole for audio 1...
  18. donkey

    thumbsticks

    also if use a multi pole switch can i simply run my video and audio cable through it? or are switches not good for that?
  19. donkey

    thumbsticks

    an item like that would be ok... but i was after something similiar to an arcade machine setup. buttons on the side not on the stick.... i am trying to wire up some wireless cameras to move up/down side-side. i wanna press a button or flick a switch to select the camera then pan it. atm its...
  20. donkey

    Solar power, heating & lighting for terrarium

    well i thought about it and i am now of the opinion that a heating pad/rock would be easiest. the lizards can soak up heat from the pad and move of it when they are warm. still i am assuming that a premade item will be cheaper so will look at finding one. i reference ebay alot but i might find...
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