Good day. I am trying to find out if this motor (https://www.robotshop.com/en/24v-5700rpm-high-performance-economy-motor.html) can work with this encoder (https://www.robotshop.com/en/hkt22-optical-rotary-encoder.html). Thank you for your help.
Hi @Chris_4 and welcome to the forum
the shaft diameter of the motor is so huge, you can only add the encoder remotely with a transmission between. also the encoder does 300 counts/rev. That’s 1.7 million counts at full throttle!
Thank you for your response. So what I’m getting is that the shaft is too big for the encoder. I don’t understand what you mean by adding the encoder remotely. I’m really sorry I’m new to this. Also is the 300 counts per revolution too high for the motor?
A remote placement could be a belt drive or gears. Too many counts don’t bother the motor, but the controller which has to keep up with such useless amount of pulses.
Ok thank you. I wouldn’t have access to the motor gears and I’m not planning on using a belt drive. Is there any other encoder you would recommend. I was thinking of putting this encoder (https://www.superdroidrobots.com/shop/item.aspx/trekker-wheel-encoder-package-4-sensors/255/) on the wheels. Would this work?
I have no idea what you want to do. The encoder-disks look fairly small, like 2" diameter. The wheels they are made for aren’t much bigger.
Do you have plans on using the big motor with such a small wheel?
Or do you want to put the encoder-disk on the motorshaft?
The motor has 3.1" diameter. The disks are probably smaller than the motor, which makes it difficult to mount the IR sensors.
Ohhh ok thanks so much for the advice. I am planning on using 6" wheel so that encoder would be too small. I am having trouble finding an encoder that would fit on a 1/2" shaft unfortunately hence why I was thinking of using a wheel encoder. Do you know where I can find an encoder that I can mount on the shaft of the motor?
I’m a big fan of DIY.
Cut out a (matt black) disk that fits the motor with 4 or more gaps around the circumfence. Then use the IR sensors from your last linked encoder or a forked photosensor ( U-shaped) and make a bracket.
Thanks so much for your responses. I don’t think DIY would be best for me this time as it would be used in a professional application. I know it would work but I’m not sure how the team would feel about using something DIY. Is there any online store that you would recommend me looking to find an encoder that would match the motor. Robotshop doesn’t seem to have a 1/2 inch shaft encoder unfortunately.