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« on: September 19, 2013, 01:02:47 AM »
hi
16 lines for 1717 is terribly low to keep track of the speed unless you use accelerometer to monitor the velocity and use low resolution to count distance only.
1.5 is better, not too much big difference with 2mm. It's better if you can make the mouse MUCH lighter instead.
I never seen 17mm wheel. You will have to make you own wheel either by lathe/CNC from a POM/acetal or high resolution 3D printing.
what does 0.3mm resolution mean?
gyro is required for a 4 wheel mouse otherwise the mouse won't be able to turn with only encoder.
Accelerometer is needed if you stick on low resolution encoder. The winner of half size micromouse, Kojima, use low resolution encoder accelerometer combo for his mouse, although it is not as comfortable as high resolution encoder to use.
Now 4 sensors and 6 sensors worked same for me. side sensor isn't that useful if you can tune your mouse well. Besides, less sensor equals less sensor pulsing time.
As of the gear ratio. I was just trying to get a little bit higher torque than my old mouse with 12:40 gear ratio, kinda came out of random, haha. It also helped me to lower the CG without making 2 wheels too close. The gear ratio won't really get involve into computation when mouse is build. I only use encoder counts per cell instead of caring the gear ratio and wheel size.