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Mike2

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  1. I have a circuit which I want to hold down on a MDF base, I was thinking of using small nails/tacs however I can't find any suitable to fit in the holes on the circuit board, so does anyone have any other suggestions, I don't want to glue it down in case I needed to replace a part etc... Thanks
  2. Does anyone know of any British Standards for producing electrical devices that are used outdoors? I have had a search however it brings up millions of them! :S
  3. So the center pin could be positive? then the barrel is negative, or ground?
  4. What is the center pin? Positve? What is the barrel? And whats the other one?
  5. Could someone tell me what are the 3 connectors on this, http://www.maplin.co.uk/module.aspx?ModuleNo=1416&doy=19m3#overview And how do I tell which is which? Thanks.
  6. Anything simple would be good, I found this: http://www.hackersbench.com/Projects/ding-dong/index.html Modifying a wireless doorbell... not sure how successful I would be at doing it.
  7. Hmm, OK, how easy is it to make a remote? or does anyone know of a simple circuit that can be used, or is used??
  8. Can you not tell from page 4 on the spec sheet? Where it tells you the connectors. Theres also this one: http://www.maplin.co.uk/module.aspx?ITAG=SPEC&ModuleNo=35628&doy=12m3#spec Thanks.
  9. Hello, again. Could you tell me how easy it is to add this http://www.maplin.co.uk/module.aspx?ITAG=SPEC&ModuleNo=22965&doy=12m3#spec to a circuit, and use it as a On/Off switch via the remote/Transmitter. There seem to be quite a few connectors but surely they don't all need to be used for what I want. Thanks.
  10. O, well if you know anything about relays, or latching relays, please help me out in this thread http://www.electronics-lab.com/forum/index.php?topic=10551.msg57939;boardseen#new Thanks.
  11. I am still unsure at weather using two motors is the best option. If you were going to build a skylight roof roller blind how would you do it?
  12. Ok, I have worked out how it will work and the simple circuit it will run off, will the Micro Switch be used as the push to break trigger for when the shade has been pulled out? I have sourced them here, though am unsure if they are the correct ones from the choice, which ones should I have picked? Latching Relay: http://www.maplin.co.uk/module.aspx?ModuleNo=37529&doy=5m3#overview Micro Switch: http://www.maplin.co.uk/Module.aspx?TabID=1&ModuleNo=6452&doy=5m3 I am looking at running the circuit off 3V, and may incorporate an IR remote. (Ambitious I know)
  13. Hmmm Ok, the problem is when the shade is pulled out, a pulley on the motor will be wound up with fishing wire, now then when I want to roll the shade up, the motor will have to pull the shade back, as well as pulling against the force of the other motor to unwind it? Is there another way to do it? Also whats the best way to shut off power to the motors once the shade has been pulled out as far as needed, or rolled up? I was thinking something like a push to break switch, however once the shade goes back and releases the push to break switch it may cause some problems...? Sorry for all the questions, but I'm a bit of a novice with electronics and having problems imagining how it would work.
  14. Thanks for your responses. I will be using a roller shade / blind type device pulling it out horizontally. I want to use a motor to pull the shade out, once pulled out I want the motor to stop, and the shade is held in place. This is done by turning it on. Turning it off, or the switch the other way, the shade is pulled back and rolled up using a or the same motor. This is an image to show what I mean: I want it to be all automatic, all the users does is flick a switch. I was going to use fishing string for it. the motor I am currently using to test is a simple motor which rotates in either direction depending on how the positive and negatives are connected, it doesn't have self-inhibited gear, so it can be rotated with out power manually. Do I need two motors to make it pull out and roll up? How can I make it switch off when the shade is puled out upto the pulley (The shade can be set to work with different lengths, eg how far it comes out)? Thanks
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