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  1. darren adcock

    Wiper Motor Wiring

    Mangaged to get the wiper motor working today, thanks all. It didn't cope to well with lifting what I needed and I think I over loaded the variable motor controller circuit, it got very hot. But it'll be a great motor for another mechanism. Now I bought another motor which I'm sure can handle...
  2. darren adcock

    Need help getting guitar volume pedal to work with tattoo power supply

    Dave Lowe. What is the model of the Tattoo machine please? From what I can see the Maxon motor is 2.5watts. I think I'm correct in: If it runs at 8v it would therefore need 0.3 amps. Do you want a circuit that goes straight to the motor? That's not too difficult to do, the difficult bit would...
  3. darren adcock

    Wiper Motor Wiring

    HAAAAAAA yes I comply Sorry Hevans, I wrote the radius of the cam incorrectly it should be 2cm. Hmmmm, incorrect calculations, more learning to do.
  4. darren adcock

    Wiper Motor Wiring

    Ok so time to see if I've learned correctly, and see if I can work out how to calculate all of this. First equation I think need to be the lever, to calculate force needed to lift 1.5g weight. Fe = (1.5kg) (9.81 m/s2) (0.3m) / (0.02m) = 22.07... N In weight this will be (I hope): fe =...
  5. darren adcock

    Modulating Hydraulics

    Actuator/attenuator... oops... there's my dyslexia....cheers for correction.
  6. darren adcock

    Book Reviews

    Nicholas Collins: Handmade Electronic Music. It was my first book, I knew nothing. It gets you started very quickly, has good descriptions of parts, skills etc. Then gets you quickly making projects. I raced through this book, learned a lot very quickly then jumped on internet forums to learn...
  7. darren adcock

    Modulating Hydraulics

    Hi Bob. Try typing linear attenuator into google instead, there are lot's of window/door type openers and they often come with the drivers etc. I've seen one today that was rated 60n but couldn't find it again. If you need anything more specific, someone else will help. Best D
  8. darren adcock

    Sound level meter up to 165dB

    might not fit your budget, but these are great. Used them when field recording thunder storms. https://www.noisemeters.co.uk/accessories/high-level/
  9. darren adcock

    Wiper Motor Wiring

    In fact, I hadn't considered that the solenoid would be on/off... bit to sudden to imitate human arm lifting motion.
  10. darren adcock

    Wiper Motor Wiring

    Sorry Hevans. I did look at solenoid's but I Ideally wanted to imitate a human arm, I didn't realise they could have an inbuilt spring... that's very interesting... a pusher wither a spring would be ideal...and potentially much simpler. I was also thinking about the spring rebound mechanism...
  11. darren adcock

    Wiper Motor Wiring

    Hi Hevans, that is a great reply thanks. I need to do some homework here. I have ordered a power supply to be able to test this and intend on buying a bench supply with 5amp capacity so I can manage this better in the future. In the mean time whilst I'm learning here is the requested diagram. A...
  12. darren adcock

    Wiper Motor Wiring

    And it's good because this thread has lead me to an online electrical calculator site so I can see how amps, watts and voltage convert. http://www.rapidtables.com/calc/electric/Watt_to_Amp_Calculator.htm
  13. darren adcock

    Wiper Motor Wiring

    Thanks Constantine, it's seeming pretty obvious I didn't factor in what power I would need here. Luckily I bench tested it with a bench supply that has current limiting otherwise things would have got very hot very quicly I fear.
  14. darren adcock

    Wiper Motor Wiring

    Thanks M, I've bought some of these before. I shall do so again. Thanks.
  15. darren adcock

    Wiper Motor Wiring

    Hi Edd. That circuit is a bit beyond me to be honest, also it's 220v supply and I'm not that confident with that. Maybe I can buy a power supply ready made, I'm looking at this http://www.maplin.co.uk/p/switched-mode-12v-dc-5a-regulated-cctv-power-supply-n63jn there's a 10amp version also. But...
  16. darren adcock

    Wiper Motor Wiring

    Thanks Edd. I did spend £25 on motor. That website has given me some ideas. I initially thought about using a car window motor but couldn't find one I could afford, seems they are double the price over here in UK. As I'm relatively new to motors I've been buying quite blindly to be honest, then...
  17. darren adcock

    Wiper Motor Wiring

    Yes there is continuity from both to the frame. So When I get an appropriate power supply, I apply - (return) to the frame and then + to either lead? Probably another gasp is going to appear here, I was going to see about controlling the speed via voltage control, by using LM317 variable...
  18. darren adcock

    Wiper Motor Wiring

    Thanks Edd, Looks Like I got some learning to do here ie power requirements for this unit. It was the first time I'd opened one of these up and wasn't sure if the back forth mechanism of wipers was internal to the gearbox, fortunately in this case it was not. It's a worm gear to a large gear...
  19. darren adcock

    Wiper Motor Wiring

    Hi Hevans, thanks for your reply. I was going to ask about amp requirements for this motor. I am not well versed in amp/current draw to be honest and yes your gasp is valid as I was going to run it off a wallwart, I'm glad your gasp appeared here. I've just checked my bench supplies data and...
  20. darren adcock

    Wiper Motor Wiring

    Thanks M, that's useful. I'll re open motor on Wednesday when I'm back in my workshop and report back. Edit* In fact, let's see if I get this correct. As long as blue (common) is connected to - and red or yellow to + the motor should turn? And I figure I'll have to isolate the ground from the...
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