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do you think an H-bridge could be as efficient, its kinda cheaper (like 30 dolla)
Heres a question:Why bother using an MCU and servo at all?Why not just have a switch directly connected to the motor(s) and just set it up so that the ball rolls itself into the spinning wheels since theyre constantly spinning anyway? Youll save yourself lots of time and money.BTW, an encoder is used to help a microcontroller to figure out the RPM and/or distance of travel for a wheel/robot-EDIT-Also, if you still want to use your servo idea, you can just use a pair of 555 timers(or one 556 timer) to generate the frequency needed to tell the servo to move forward and back since it will be following the same path every single time.
I understand that, however, what is the use of one where the motor spins for a couple of seconds? Encoders are usually used on drive motors, not something like this
thanks guysit is supposed to be automatic, so it can't spin constantly (for power consumption and dog safety reasons)i would like it to spin only for a set time after the ball hits the touch sensor so that if for some reason the dumb dog puts sumtin else in it, it won't break anythingsorry i put the wrong motor in last time:http://www.trossenrobotics.com/store/p/5142-FIRST-CIM-Motor.aspxthis one has the highest rpm to torgue ratio i could find for 30.00 ( by my calcs- it should be able to throw the ball over my expected 11ft)it has ~88r/s
These motors are AWESOME! Ive been looking for these very motors for like 3 years now....... we used them as the drive motors for our robot in the FIRST robotics competition at my old high school. Very powerful especially with the right gear box