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Slow high torque electric motors for stirrer?
Yes, pots can and do go down to zero (or at least into the single ohms or even less), which is why I ... |
3-12-2014 at 05:00
by: Varmint |
Slow high torque electric motors for stirrer?
Try this:
Capacitor 0.033uF from pins 6+2 to Gnd. (Pin 1)
Fixed resistor 1K from 6+2 to pin 7. ... |
2-12-2014 at 17:19
by: Varmint |
Slow high torque electric motors for stirrer?
Non-polar is perfect. Only reason electrolytics are polarized is the correct polarity creates an ul ... |
2-12-2014 at 15:38
by: Varmint |
Slow high torque electric motors for stirrer?
Simply reduce the cap again! You probably needn't concern yourself with duty cycle, I expect the dr ... |
1-12-2014 at 20:14
by: Varmint |
Slow high torque electric motors for stirrer?
Usually the cap goes from pin 6 (threshold) + 2 (trigger) to ground (pin 1), using it tied to VCC (p ... |
30-11-2014 at 19:53
by: Varmint |
Slow high torque electric motors for stirrer?
Yes, but I'm used to seeing different wiring for astable 555's.
http://home.cogeco.ca/~rpaisley4/ ... |
30-11-2014 at 16:58
by: Varmint |
Slow high torque electric motors for stirrer?
Now keep in mind you said the highest speed it attained was near the limit of the pot, meaning the 5 ... |
30-11-2014 at 15:58
by: Varmint |
Slow high torque electric motors for stirrer?
OK, you should have a power supply providing juice for the 555 and the driver board.
Thje drive ... |
30-11-2014 at 13:30
by: Varmint |
Slow high torque electric motors for stirrer?
OK, forget the sparkfun driver, you have an equivalent.
The thing to do is to raise the voltage i ... |
30-11-2014 at 12:31
by: Varmint |
Slow high torque electric motors for stirrer?
Hold the presses, describe the driver chip you have, I think you can improve it with a little bit of ... |
29-11-2014 at 15:38
by: Varmint |
Slow high torque electric motors for stirrer?
Frankly I'm surprised it's driving all that mass as well as it is.
I don't really know much abo ... |
29-11-2014 at 13:17
by: Varmint |
Slow high torque electric motors for stirrer?
The cheapo $19.95 driver is from Sparkfun. Yes, it should work fine, the clock pulses from the 555 ... |
29-11-2014 at 11:17
by: Varmint |
Slow high torque electric motors for stirrer?
https://www.sparkfun.com/products/11876
This is what I would consider the absolute minimum driver ... |
28-11-2014 at 21:18
by: Varmint |
Slow high torque electric motors for stirrer?
http://www.geckodrive.com/step-motor-basics
Link to Gecko's stepper motor basics.
DAS |
28-11-2014 at 21:06
by: Varmint |
Slow high torque electric motors for stirrer?
OK, that was a textbook demonstration of the symptoms I tried to describe regarding driver issues. ... |
28-11-2014 at 20:39
by: Varmint |
Slow high torque electric motors for stirrer?
Magpie:
At the upper speed limit, does the motor continue to whine with pulses, or is this the 55 ... |
27-11-2014 at 09:27
by: Varmint |
Which element is more energetic: Aluminium or Potassium?
First, if you are going to try and re-write electrochemical science all by yourself, you ought to co ... |
18-11-2014 at 03:51
by: Varmint |
Centrifuge
Ah, I see. You want a uranium separation grade centrifuge to get your everyday chemistry to layer o ... |
11-11-2014 at 03:19
by: Varmint |
Centrifuge
A centrifuge should be balanced to a very high degree, so the only losses to be dealth with are roll ... |
10-11-2014 at 04:02
by: Varmint |
Slow high torque electric motors for stirrer?
Didi:
My objection to running full step at all times is the resonances that cause the whole syste ... |
7-11-2014 at 04:34
by: Varmint |
Recommendations for a hotplate?
I have the Corning 420D, spent $410 to get it.
There are better, but at much higher price. There ... |
6-11-2014 at 18:58
by: Varmint |
Slow high torque electric motors for stirrer?
A stepper is a good solution when precision positioning is required, but it's loss of torque with in ... |
6-11-2014 at 05:19
by: Varmint |
Alternative to dessicators
My main objection to a food dehydrator is the open nature of the incoming air.
They operate by pr ... |
9-9-2014 at 03:57
by: Varmint |
Cyklonan
With the outline of the cube clearly delineated on the target workpiece, it is clear to me the deton ... |
9-9-2014 at 03:46
by: Varmint |
Food for thought
America has had a weight problem for decades. I grant the whole world that straight out, with no ap ... |
28-8-2014 at 08:40
by: Varmint |
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