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  1. donkey

    dumbest question ever

    tranciever question hey guys and gals need to know something. but feel stupid asking http://www.ebay.com.au/itm/300661932937?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649 is that item worth the money? I have a project that requires a reciever to pick up an unlimited number of...
  2. donkey

    arduino is it all its cracked up to be?

    as the title says. I am trying to figure out whether to spend time on it or to go straight into the high end stuff? I figure arduino is great for newbies like me trying to make stuff but the limitations are they too extreme?
  3. 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.
  4. 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.
  5. 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...
  6. donkey

    forward and reverse variable motor circuit

    hey guys, am making a r/c to make life easy to start with it'll be wired just to get the thing working, I'll go wireless later. the design is for a tank. i was looking at making each side independant but i want forward and reverse, and I want to control speed. I was hoping rather than having a...
  7. donkey

    diode bridge

    this should be easy to answer... if i take 4 dynamos run them in series and they produce.. lets say 1.5v each.. and then run that through a diode bridge to make the current DC, would i get roughly 6volts? I think i saw somewhere that said the diode bridge will cause a loss of voltage but the...
  8. donkey

    anyone working in australia?

    I know poor mystic was a cairns guy but looking for someone who might know regulations in australia on connecting solar or wind generators to the main grid here in australia. The reason I ask is semi political but more for the average person. here in australia we are about to get smacked with...
  9. donkey

    3d glasses

    put this here but have to ask, are there any 3d glasses that go over prescription spectacles? if not is it still simply a case of making one side red other side blue?
  10. donkey

    2 questions

    ok first time i created a post in a while, but I need help. first of all I saw a device ages ago that uses the househould electrical wiring to transmit a network for computers... what is the device called? and secondly this one is a project unless someone has a premade device. I work at a...
  11. donkey

    sound to electricity

    hey guys, a while ago I wrote asking if anyone knew of a circuit to convert noise into electricity. I have found many examples of it but am still stuck on finding a circuit diagram. http://www.gizmodo.com.au/2011/11/sound-powered-leds-turn-screams-into-power/ here is an example of what i have...
  12. donkey

    capacitors as batteries

    ok I have read in an electronics catalogue they use capacitors for backup memory in computers now. so my question is does anyone know what sort of storage capacity they have max? I was thinking of going solar but lead acid batteries would be a small issue with me. the system i want is only...
  13. donkey

    cigarette lighter

    I have an idea for an electric portable ciagarette lighter. the idea is using an heating element connected to a switch and battery.. I have struck an issue however and its to do with temperature. I was trying to make it safe and then realised this could get quite hot so I was wondering if...
  14. donkey

    frequency question

    hey all. just a quick q about frequencies. is it true the higher the frequency the more data it can send? I just noticed that 433mhz are rarely used for streaming video but 2.4ghz is. so I was wondering... if anyone can shed light on the subject please do so
  15. donkey

    solar workshop time

    well its time I got off my lazy backside and finally got into building my solar workshop. Before I start spewing forth details please note I am NOT a licensed electrician and am trying to minimise the use of one. In fact I hope to not need one except for plugging up my inverter but will see...
  16. donkey

    mobile phones as security cameras

    this project is for a friend. he has found on ebay a bulk lot of old mobile phones (no info on models as yet) and he was wondering how hard it would be to use them as security cameras. all have bluetooth, and he was wondering if there was anyway to connect them to a hub. my theory is this...
  17. donkey

    saw this and thought it could help some people out

    http://www.datasheetcatalog.com/ hope its helpful anyway
  18. donkey

    not so cordless drill

    got a project i have been trying to figure out for a little while. we all use cordless drills but i want the option to plug it into the mains(via a transformer) when both my batteries are flat. question is how do i find the right transformer? I know its 18v but thats all i know
  19. donkey

    For Sale: 1000v diodes

    just gimme an address to send them to. 5 packs of 4. labelled DIODE 1N4007 1000V 1A D041 PK4. first one to post gets them..... something that was a hand me down. not used unopen. may have been stood on as the wire is slightly bent.
  20. donkey

    sound-energy converter

    when i was growing up here in aus dicksmith was the electronics store with all the parts. they had a kit for kids that you could make about 200 kits out of. 1 of the kits i have been trying to track down a schematic for. it converted sound (through the speaker of course) to energy (well it made...
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