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  1. Minder

    motor advice

    The initial break-away torque you need can be measured uding a spring scale and a defined length of an arm of some sort arm attached radially to the arm. That motor looks a little on the weak level for what your app seems to need?
  2. Minder

    motor advice

    Is that 1-3/4" dia? If so, quite a small motor.! You may need a high gear reduction to accomodate that size, an automotive wreckers may supply an answer e.g wiper or seat moving mechanism. You may be hard pressed to find the right size for the load though?
  3. Minder

    Not Understanding Arduino useage versus traditional Electronics useage in Devices.

    An indicator is the inability to repair and maintain many electronics devices now, due to the proprietary nature of the type of control, i.e. not only processor centred but modular electronics in general. As I mentioned, I was fortunate in a way, to progress through the era's, from early...
  4. Minder

    Stepper Motor Locks Up at Speeds Above 8mm/s

    The higher the resolution (1/16) the lower the torque.
  5. Minder

    Speed controller on washing machine motor

    Most likely blew the Triac in the controller! I assume you are using a Universal motor, these have very high inrush current if you tried to start with it flat open.
  6. Minder

    Not Understanding Arduino useage versus traditional Electronics useage in Devices.

    Yes.
  7. Minder

    Not Understanding Arduino useage versus traditional Electronics useage in Devices.

    An example, When I started out in the tube era, projects were Rather bulky ! To say the least. Transisters came along and reduced the size drastically, then IC's replaced a bunch of transistors, even more compact. ! Subsequent to that along came the micr-processor, now I can find a whole load...
  8. Minder

    Motor is too fast

    I would tend to look to a 5:1 planetary gear box, with it also comes an increae in torque! There are several reasonably priced out there. !
  9. Minder

    Motor is too fast

    Many pieces of domestic equipment still using Universal motors. BTW, Groschopp, ElectroCraft, Dumore Motors, and Universal Electric Motors are still producing them.. .
  10. Minder

    Motor is too fast

    The exceptions are motors designed for Universal use, AC/DC brushed, series field motors as used in Vacuum systems etc. These easily reach 8 krpm, and can go above this if you block the intacke end. !
  11. Minder

    Motor is too fast

    Reding the specs of many of these cordless trimmers, they mainly posses brushless (BLDC) motors, as I suspected in your case. That degree of RPM would exceed what a normally brushed motor of that size could achieve !!
  12. Minder

    Motor is too fast

    At that RPM, is the motor BLDC by any chance?
  13. Minder

    Trace Repair Wire?

    For traces that carry heavier currents I have used the copper braid, IOW, solder wick .
  14. Minder

    Speed controller on washing machine motor

    You could also try it out on the Universal motor in the OP!
  15. Minder

    Speed controller on washing machine motor

    If you just need a high speed polisher, then RPM control may not be needed??
  16. Minder

    Speed controller on washing machine motor

    Yes that is the IC TDA1085
  17. Minder

    Speed controller on washing machine motor

    It says Universal motor on the label, if it is so, then it will have brushes and run on AC or DC, but being a series motor , it rpm is governed by load. There is an IC out there originally developed by Motorola for these washing M/C motors that required control. It is a TDA1085. If it was built...
  18. Minder

    Deadly repair.. hamon crodan

    Deadly repair.. hamon crodan Is that a Harmon-Kardon knock-off
  19. Minder

    How to de-solder?

    I agree, I prefer to clean a connection up by removing all the evident oxidization first!
  20. Minder

    How to de-solder?

    I also made some similar copper bar/plate styles of various lengths with the edge filed down to a Vee along its length in order to de-solder IC's one side at a time in just two applications for each side/row. .
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