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Topic: Trimpod with step motor A4988  (Read 5730 times) previous topic - next topic

raschemmel

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it probably turns no more than 300 degree
No. We said 270 degrees.

batata004

@raschemmel I am checking and mine is turnin around 300 degree not 270. Maybe it's indeed broken, but I will have a try with it when I get to my shop and get the motor to test.

jremington

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I am creative but I dont know everything, even with my whole creativity sometimes I need to ask to less creative people (but more inteligent at certain subjects) some advice.
Isn't it amazing  that a simple trimpot can be such a major stumbling block?

raschemmel

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Isn't it amazing  that a simple trimpot can be such a major stumbling block?
I believe if you use a meter to monitor the voltage the calibration can be done in under a minute.

allanhurst

Hi batata004

Just because people have specialist knowledge doesn't mean they're not very creative ( whatever that means)...

I hope we've been able to help.

regards

Allan.

jremington

#35
Aug 31, 2016, 09:52 pm Last Edit: Aug 31, 2016, 09:53 pm by jremington
A creative person could probably change an automobile tire using a screwdriver, but I suspect that use of the right tool can make most jobs a bit easier.

batata004

Yes, a creative person can do A LOT of things while inteligent people can do only a few things well done. You dont need an astronaut or a PHD in mechanics to change an automobile tire, you can get your screwdriver and solve the problem by yourself.

raschemmel

#37
Aug 31, 2016, 11:07 pm Last Edit: Aug 31, 2016, 11:12 pm by raschemmel
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A creative person could probably change an automobile tire using a screwdriver, but I suspect that use of the right tool can make most jobs a bit easier.
When I was canyon racing in Southern California I got a flat on my Yamaha FJ-1100 and had to repair the tire (with a Vulcan tube repair kit) and I was wearing full leathers on a hot summer day. I took off my jacket and was trying to get the tire back on the rim after repairing the tube and I was having trouble getting the tire onto the rim. Just then some other canyon racers came around the corner and stopped to help. One of them suggested I use suntan lotion to lube the rim and that made all the difference in the world. I was back on the road in 10 minutes.


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You dont need an astronaut or a PHD in mechanics to change an automobile tire, you can get your screwdriver and solve the problem by yourself.
FYI,
This is the tool I needed . (I didn't have a screwdriver)

jremington

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Yes, a creative person can do A LOT of things while inteligent people can do only a few things well done.
Are you still having trouble with that trimpot?

batata004

@jremington probably not, in the weekend I will check it out and see if it works. If not, I will come back here to ask suggestion from not creative but inteligent people of this forum who always try to help; sometimes in a inteligent way and other times in a creative way - which I prefer more.

raschemmel

#40
Sep 01, 2016, 12:57 am Last Edit: Sep 01, 2016, 02:13 am by raschemmel
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from not creative but inteligent people of this forum  
If you are so creative , how many patents do you have ?


US PATENT 4088315

rpt007

Being creative AND intelligent must not be a contradiction.
I like this combination most, because it is way better than being stupid AND creative
Before you ask:
Did you really read and understand How to use this forum ?
AND:
Do you have already some solution or is a part of the problem sitting in front of the screen?  :)

ChrisTenone

What, I need to say something else too?

batata004

I prefer being stupid and creative than inteliggent cause inteligent people does exactly what @raschemmel just did, so they become an idiot in a blink of eye.

ChrisTenone

... So my idea is this: could you please tell me which wise (clockwise or anticlockwise) the trimpod reduce and increase current?
...
It depends on how you have it wired up! A trim pot works like this: A resistor film is attached to the two outer pins. The center pin is free to connect to the resistor at any point along the resistive field. The resistance between the center tap (aka the wiper) and each of the end pins will add up to the total resistance of the end-to-end value.


                               |
                               V
          ---------/\/\/\/\/\/\/\/\/\/\---------


So if you hook up the center and left pin, it will increase the resistance as you move it to the right. If you hook up the center and right pins, it will behave in the opposite way.





ps, I would rather be an idiot savant than a genius savant.
What, I need to say something else too?

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