WEEK 11

14/12/2016

Activity: Research about the circuit diagram used to developed my project

Objective:To find the suitable circuit diagram that can be used for my project

Content/procedure:

• A lot of circuit diagram based on 8051 microcontroller project. I choose circuit diagram stepper motor interfacing with 8051. it is the simple circuit but I will add one more stepper motor

Result/analysis:

Stepper motor is made up of a stator and a rotator. Stator represents the four electromagnet coils which remain stationary around the rotator, and rotator represents permanent magnet which rotates. Whenever the coils energised by applying the current, the electromagnetic field is created, resulting the rotation of rotator (permanent magnet). Coils should be energised in a particular sequence to make the rotator rotate. On the basis of this “sequence” we can divide the working method of Unipolar stepper motor in three modes: Wave drive mode, full step drive mode and half step drive mode.

In this project, full drive step will use. full step drive is when  two coil are energised at the same time producing high torque. Power consumption is higher.

Figure 1: The stepper motor circuit interfacing with 8051 microcontroller

Conclusion

 I choose the above circuit to make the revision on designing my project. The all component are available at the market and internet..