Search results

Search Forums New Posts
  1. donkey

    Need Help if i can study electronics

    i think the most common one i run into is the equation for finding the right resistor for a LED. I may encounter others later, but as always there are calculators out there with these formulas in them, you just have to key in the missing parts. i read through the dummies guide for...
  2. donkey

    Need Help if i can study electronics

    i can tell you now electronics has maths in it no matter how you look at it... the idea is to get a calculator to do all the hard work for ya by having it give you formulas. anyway i was put onto a book called "the art of electronics" by paul horrowitz and winfield hill. its not a bad read but...
  3. donkey

    need help ? How would an analogue alarm work with a digital clock

    i can think of 2 ways both require some prgramming knowledge. the first is complicated but it works by using 3 pots that rotate a full 360 degrees, they each determine out where the hand is located on the "face" of the clock and give said information to the digital read out. the second also...
  4. donkey

    need help on connection to lcd

    rambo we need to know more details. you could ask the place you got this schematic from the sort of lcd they use or you could tell us what this is for and what you want it to do.
  5. donkey

    arduino

    hey guys, with the revolutionary aspects of arduino, would it be wise to include a sticky with links to popular arduino sites? alot of what we do here is electronic but i think arduino should have a dedicated area as its both elctronic and a specific language together.
  6. donkey

    electromagnet help

    may I be so bold as to enquire the use of this item? is it rail gun in nature? or is it a level sensor? or an antigravity project? or is it to detect vibrations? the reason I ask this is each project has different requirements, for example if it is to detect vibration then you would either want...
  7. donkey

    Remote video monitor with loudspeaker

    just a note, I had a dog once and we tried using the intercom to scold him when he played up...... my poor puppy was confused and it really freaked him out. he could hear us but couldn't find us, which stressed him out. maybe rather than your voice you could use a loud screecher, or buy a...
  8. donkey

    wireless blu-ray player

    the phrase wireless opens up so many different possibilities. wireless net is one everyone is talking about, but there are also av sender, recievers, so if for example the bluray is in the living room and he wishes to play a movie but watch it in his bedroom he will either need to run a very...
  9. donkey

    Infrared LED nightvision setup

    you could google "infared floodlight" and check the webpages that come up, then you modify a helmet to incorporate this. http://www.jaycar.com.au/productView.asp?ID=QC3652&keywords=qc%2D3652&form=KEYWORD there is approximately 3ft to a metre (about 3 and 1/3 feet) so that will get very close...
  10. donkey

    Will we ever get waterproof electronics for us consumers?

    quick question to do with this. Are there eny waterproofed touchscreens? I have seen cameras and a few basic model phones waterproofed, but not one with a touchscreen
  11. donkey

    specialty led

    yeah i thought so, was hoping someone could point me in a direction to get one built. my assumption is mega dollars though
  12. donkey

    Need help in Doing this project ,Electronic code lock

    and if it isn't that file, could you tell us the errors. that might help us a little more
  13. donkey

    iPod

    on the other side of this, if all your items are downloaded via itunes you can reload them using your itunes account. the BIG issue is if you do it yourself and mess things up are you able to replace the unit, they aren't cheap. I have a very good rule i follow, if its cheap try to fix it...
  14. donkey

    Bluetooth and usb

    there are options available to transfer documents and pictures from a laptop/desktop to a phone without the use of a chord. the EASIEST way is to buy a bluetooth DONGLE(i am positive thats what they're called) and use that to transfer items to your phone. may i be so bold as to enquire the make...
  15. donkey

    PAT Testing...

    i work for a cleaning/security company in australia. we get things tested every 6 months. we use our own guys to do this for the simple reason, it covers our butts. if we used an independant then there is a probability (very unlikely but still a small chance) that the credentials of the...
  16. donkey

    specialty led

    hey guys and gals. am looking for a special LED. one of those 2 colour ones but am looking for one that isn't dual colour but bright LED on one side and infared on other. for a security torch i am making.
  17. donkey

    Green Detector

    i get green, i get detector..... do you want us to give you ideas on what to detect? or ideas on making a bug zapper solar powered? or do you want the circuit diagram for a PIR?
  18. donkey

    Replace Switch on circuit board question

    with remote control it is usually only a momantary contact needed. the only thing i can add here is I know playing gets you hyped up, so make sure the switch is very rugged. also if you get really bored http://jaycar.com.au/productView.asp?ID=SP0760&keywords=sp%2D0760&form=KEYWORD is a switch...
  19. donkey

    vibrations

    hey was looking at vibrations and have decided to ask questions. I get that speakers work of vibrating making the noise, and microphones work by recieving vibrations. I also understand basics of seismographs and the basic principals of of detecting vibrations for alarm systems. the...
  20. donkey

    cell phone batteries

    being same brand means very little. i could have a lipo battery and a nicd... lipo will last longer if they are both the same then one might just have a better mah rating if the mah rating is the same then age, conditions, exposed to weather, memory effect.... there are heaps of things. if...
Top