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  1. donkey

    Help With Potentiometers

    to use them simply plug them in... where it says v in + and - connect power supply where it says v out +- connect item....... not that hard and easy to use
  2. donkey

    Help With Potentiometers

    Pwm works very well with leds too
  3. donkey

    Grandsons Project

    so did this work?
  4. donkey

    Help With Potentiometers

    ok if you are controlling a motor the ONLY option I would recommend is a PWM module... it looks like a potentiometer(it has one as a part of the circuit) but what it does is vastly different. a resistor (potentiometers included) act like a converter.... (really bad analogy here but gives best...
  5. donkey

    We Live In A Wonderful World

    so with everything that is coming out lately I thought I would put up a post asking people to contribute the nice things around.... things you thought would never see.. I will start the ball rolling with 3d printers... dang things are impressive on many levels and I never thought we would be...
  6. donkey

    wifi speakers (arduino and esp12e)

    https://www.arduino.cc/en/Tutorial/SimpleAudioPlayer something like that for the amplifier circuit, then get any of the wifi shields and plug it up. I am unsure about this as I am going to say you need a wifi router if you want to connect to more than 1 device at a time... you could try NRF24l01...
  7. donkey

    Grandsons Project

    welcome ro4ie just so I don't get you the wrong advice could you send me a link to the items you are talking about... of the top of my head I would say that you take the + and- wires and goto radio shack or equivalent and ask for a mono 3.5mm plug then wire it up also the 2 devices technically...
  8. donkey

    Motor Discussion

    ok the reason I am asking is the application requires accuracy, speed is good also but not necessary, but it really needs to hold about 2kg weight on the end of a pole (about a metre long). oh and the pole twists and turns lol I know I am going to be told this is hard and I agree whole heartedly...
  9. donkey

    Peltier

    1 http://www.marlow.com/resources/general-faq/6-how-do-thermoelectric-coolers-tecs-work.html very simply a peltier moves heat from one place to another using semiconductors 2 uses are for cooling and heating (its odd but yes heating) and if you make one side hot and other cold it could...
  10. donkey

    could I ask for a new members area or thread please?

    I was thinking of all the cad and design and programming stuff we have found over the years. while the idea of maintaining such a thread would be a task within itself could I ask for a thread to be stickied somewhere that a moderator could delete posts if needed (virus links etc) to show the...
  11. donkey

    Motor Discussion

    just an add-on to this I will code this sucker up and do a short video if it works to show part 1 of a grand scheme
  12. donkey

    Motor Discussion

    thanks minder. the idea is for something like a CNC but it needs continuous rotations which servo's don't do, and I wanted to be able to detect 1 degree of rotation which I don't think steppers do. the only issue with the setup is I have to upgrade the encoder as the one I have only detects 15...
  13. donkey

    Trying to connect old computer suround sound speakers to a modern LCD T.V

    unless the circuit allows for spike jumping and the transformer is broken it to allow a signifigant amount of surge then you should be fine. there is very much unlikely this will happen ever though. usually an amp just stops working, the board fries, parts get old.... very rarely does a...
  14. donkey

    Motor Discussion

    yup thats fine, which will provide more torque though?
  15. donkey

    Trying to connect old computer suround sound speakers to a modern LCD T.V

    hi and welcome to the forums, I don't have your tv model BUT very simply this would work. the speaker jack is audio out, the speakers will have an inbuilt amplifier to take that audio and boost it to make a signal that the speakers can use. now the issue is you have a audio jack that at best...
  16. donkey

    Motor Discussion

    Hey all, just a quicken, lets say I have designed a method of accuratel positioning a dc motor (well its geared and has an encoder on it) would thaat be a better method than using a stepper motor? I am after something that has a lot of torque and is very precise, preferably fast too but the...
  17. donkey

    anyone to help me out?

    yeah might search around for what i want..... I was using office as an example but lets look at cads there are a myriad of alternatives, this goes for writing programs, drawing program, calculators etc. want a program like steam that incorporates both paid versions and free versions with both...
  18. donkey

    Voltage regulation

    ok to better understand this I will need detail about your project. to get 12volt from 28v you need a dc-dc converter, nothing else... but how much current you looking at? for 5volts output, what input do you use and what current do you need?
  19. donkey

    anyone to help me out?

    so I was wondering if anyone can help me out we got the infamous appstore for apple and playstore for google.... anyone know of a store like steam etc where you can browse and get full programs (Not that windows store, its just not right putting "apps" on windows) so for example I want an...
  20. donkey

    Wanted: Circuit wizard (standard/ professional or hobby version

    ok so I got an idea, you could get the above program and burn it to a cd/dvd the obvious thing is there are piracy and copyright laws and if the above company is not wanting to sell outside the UK they probably have a reason
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