Week1-Stepper Motor Connections ( Making up the Circuit)

A meeting was arranged with the group supervisor. We discussed all of the necessary steps. The Supervisor clarified some important aspects regarding the circuit design. He also suggested to choose the Bipolar Parallel Connection for the Stepper Motor.
Following that, a combination of the wires were made for the circuit.

• RED(A)--  RED+BLK/WHT
• BLK(A\)-  BLK+RED/WHT
• GRN(B)-- GRN+YEL/WHT
• YEL(B\)-- YEL+GRN/WHT

New wire connection for stepper motor

A prototype circuit was made to check the amplifier. The output we got was perfectly right. The Amplifier we used was the L298N. Following is the overview of the ratings of the amplifier.

1. OPERATING SUPPLY VOLTAGE UP TO 46 V 
2. TOTAL DC CURRENT UP TO 4 A 
3. LOW SATURATION VOLTAGE 
4. OVER TEMPERATURE PROTECTION LOGICAL ”0” INPUT VOLTAGE UP TO 1.5V (HIGHNOISE IMMUNITY)

All of the other components were checked. No surface mount devices are being used in the project. A limit switch was obtained from the laboratory technicians which is used to cut the supply current from a circuit acting as a safety switch.

Week 1-Time to get started

During the first week, we arranged several meetings in order to divide the tasks needed to complete the project. Furthermore we made a detailed list of every component we needed. We ordered those items.
We received the items in a short time. Following are the pictures for the main components needed for the project.

Unboxing

Detailed list of components:

• Amplifier--L298N x2
• Vero-board
• Limit switch
• mbed NXP LPC1768
• Stepper motor (Provided by the Supervisor)
• Resistors- Different Values
• Capacitors- Different values
• Diodes
• Connectors

L298N DUAL FULL-BRIDGE DRIVER (x2)

Vero-board

Limit switch

mbed

Stepper motor

Here we go!

Hello everyone, Welcome to our project which is Stepper Motor Control. 

I am Yawar Bashir, and I am responsible for writing the blog for our project. Other members will also be contributing to the blog.

We are a team of four members. Other three members are

Lei Ba 

Jiaxin Fei

Bader Bawazir 

Our project is being supervised by Prof Jeremy Smith.

This project aims to interface an mbed device with a computer in order to program it to take control of the speed and direction of a stepper motor. The mbed is required to show the speed and direction of the motor on the LCD screen at all times while operating.  

I will be posting our project's progress every week.