I will be using 300 rpm DC motor to drive a shaft at 60 rpm. For this I will use a pair of spur gears with ratio 1:5 i.e. smaller one will be attached to motor and larger one will be attached to shaft (for speed reduction).
The electro-mechanical arrangement I am looking for will have following requirements:
1. There will be a push button, when pressed will rotate shaft clock-wise (actually motor will rotate anti-clock-wise; pair of spur gears will change the direction of shaft).
2. After four clock-wise rotations of shaft, motor should reverse the direction and shaft should rotate anti-clock-wise.
3. After four anti-clock-wise rotations of shaft, motor should stop.
As per my understanding, for counting purpose, we can use IC 4017 decade counter. The input pulse to trigger the decade counter will come from slot-type opto-interrupter (opto-sensor). For reversing the direction, we can use H-bridge or relay.
An opaque disk will be attached to shaft and will have small hole at one place; during rotation when hole will come between opto-interrupter slot, the infra-red light sent from infrared LED will be sensed by phototransistor and we can use this signal to trigger decade counter (to increment it or to reset it). After four clock-wise rotations, we can reset the decade counter and can use it again for counting anti-clock-wise rotations, and will also reverse the direction of motor too.
I am not from electronics background and looking for circuit design to achieve above mentioned requirement. I will be really thankful to any help you experts can extend. Thanking you all in advance.
The electro-mechanical arrangement I am looking for will have following requirements:
1. There will be a push button, when pressed will rotate shaft clock-wise (actually motor will rotate anti-clock-wise; pair of spur gears will change the direction of shaft).
2. After four clock-wise rotations of shaft, motor should reverse the direction and shaft should rotate anti-clock-wise.
3. After four anti-clock-wise rotations of shaft, motor should stop.
As per my understanding, for counting purpose, we can use IC 4017 decade counter. The input pulse to trigger the decade counter will come from slot-type opto-interrupter (opto-sensor). For reversing the direction, we can use H-bridge or relay.
An opaque disk will be attached to shaft and will have small hole at one place; during rotation when hole will come between opto-interrupter slot, the infra-red light sent from infrared LED will be sensed by phototransistor and we can use this signal to trigger decade counter (to increment it or to reset it). After four clock-wise rotations, we can reset the decade counter and can use it again for counting anti-clock-wise rotations, and will also reverse the direction of motor too.
I am not from electronics background and looking for circuit design to achieve above mentioned requirement. I will be really thankful to any help you experts can extend. Thanking you all in advance.