Spinning/rolls count device

[Tttsss7]

hi everybody
i want to create a small device that count rolls for example i put it on a small wheel and when i spin it i want it to count how many Rotations.. and show it on LCD
i want it to work with some gyro on the center of the wheel .

any idea where can i get such thing? ready or to build one
what parts do i need?

thank you for any help.

 

[KMoffett]

Can you show the "gyro"?

Ken

 

[Braeden Hamson]

Do you want to know how many times its rotated or do you want finer measures like half a turn quarter turn 1/30th of a roll?

If you want one count per turn you could use a hall sensor and a magnet. You could set it up such that as the magnet passes the sensor it will pulse. This pulse can be counted by an arduino. You can also set used the hall sensor to measure the exact angle of the rotating body.

On to the display, you can use two 7 segment displays that will let you display 99 to 0 rotations. You could add a third for 999 to 0. You could also use a dot matrix display which are nice and easy to use but are a bit larger than the 7 segment. But they can display like 9999999999999999. This would all be run off an arduino with a simple bit of code.

Sound like what you're after?

 

[AnalogKid]

Something like this?

Magnet
Reed switch
CD4553 3-digit counter
Display drivers
Displays
Reset button

OR - get a 3- or 4-digit counter on ebay for next to nothing. Or a kit.

ak

 

[KMoffett]

Adding a magnet to a balanced gyroscope wheel or axle would not be a good idea. That's why I asked about to see what type of "gyro" (s)he was using. Reflective ot transmissive optical would be less destabilizing.

Ken

 

[Braeden Hamson]

Yeah that is a good point, an optical system would be better.
Tttsss are you wanting total turns or turns per unit time? Like RPM or something.

 

[BobK]

The gyro is a sensor to count the rotations, not the thing he is measuring.

Bob

 

[Tttsss7]

hi everybody thank's for all the answers
I'll try to be more precise
yes i need it to count only rotation mean (360 spin) and show it on screen
the sensor need to be mounted on the center .
for example somthing you can put on a spinning top
and it count how many times he complete - 360 degrees

hope i explaied it better now

 

[Braeden Hamson]

Yes that is more helpful, I like Analog Kid's idea. It doesn't require coding and is straightforward. But the arduino might be easier to set up electrically and there's the potential that you can do some basic data processing to get RPM and total turns. Just out of curiosity what's the project? It sounds interesting, but if it's confidential I get that

 

[Tttsss7]

Yes that is more helpful, I like Analog Kid's idea. It doesn't require coding and is straightforward. But the arduino might be easier to set up electrically and there's the potential that you can do some basic data processing to get RPM and total turns. Just out of curiosity what's the project? It sounds interesting, but if it's confidential I get that

hi yes i am sorry i can't say thanks for understanding..

 

[Tttsss7]

ok i found somthing
how do i connect this to a LCD screen that count the rolls ? can i skip the arduino borad
and connect it directly to lcd ?

 

[BobK]

You need a microcontroller to interpret the info coming out of the sensor and format and write this info to the LCD.

This also requires programming.

Bob

 

[Irv]

If this *must* be mounted on the spinning top, then something like BobK discusses might be appropriate - provided the top is big enough to hold the gyro board, microprocessor board, display, and a battery - and you can get all that in perfect balance.
Could you just paint a white line down one side of the top (or stick some reflective tape there) and use a laser and detector to "watch" this top-secret top from a distance? A microprocessor to count and display the results would still be needed, but very inexpensive (maybe $15).

 

[BobK]

Who said anything about a spinning top? In the OP he is talking about a wheel.

He mentioned a gyro, as a sensor, and everyone seems to think he is talking about measuring the rotation of a spinning gyroscope. The gyro he refers to is a chip that senses angular rotation speed, not a spinning top.

Mysterious what this wheel is attached to.

Bob

 

[Irv]

To quote the OP:
"for example somthing you can put on a spinning top
and it count how many times he complete - 360 degrees"

 

[KMoffett]

It's sort of a whack-a-mole information request...20-questions may not get us there.

Ken

 

[BobK]

But he also said:

"i want it to work with some gyro on the center of the wheel "

Which I interpreted as using a gyro sensor, which he confirmed later when he linked to exactly that.

Bob