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What sensor (encoder) to use for shooter?
1 Attachment(s)
Our shooter is built of 2 small wheels connected together with a timing belt, and a CIM motor is mounted directly on the first wheel.
What kind of encoder can I use to get the RPM of the wheels? A photo of the shooter is attached. |
Re: What sensor (encoder) to use for shooter?
Consider using a one-per-rev optical or magnetic proximity sensor. What is the operating RPM range of the wheels? |
Re: What sensor (encoder) to use for shooter?
Quote:
I guess the RPM is between 4000 to 4500. Can u add a link to show me how does the proximity sensor looks like? |
Re: What sensor (encoder) to use for shooter?
We used an allen-bradley photosensor and put a piece of retroreflective tape on the perimeter of our wheel. Although we didn't have the time to actually use it in our code, we proved that it works to a reasonable accuracy at 5000rpm (there isn't any empirical data on how accurate that I remember, but for this application you can get a pretty big error without problems). I'd like to hear from a team that actually got to use one of these sensors in their code.
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