Week 1: Preliminary

Group Meeting

In week 1 group meeting, the following points were discussed:

• The method to drive the motor and how to construct the whole IR system.

• After that, the group were divided into two part which will work on IR and motor respectively.

• Then the job was to distribute to each member in detail, three things need to be finished in the project for this stepper motor drive and IR transmission group:

1. Label the location of spokes

2. Locate the original point

3. Rotate the wheel.

Supervisor meeting

• Professor Smith showed the outline for a whole project.

• Give the KL46Z microcontroller to the group and give a brief introduction about it.

Lab Day

IR system

IR system group complete the following job in week 1:

• Get all the order component in week 1 (KL46Z, bread broad, resistor, infrared LED and an infrared receiver.)

• Check all the datasheet of the component above with the help of professor Smith, the photo-transistor replaced the infrared receiver and the circuit diagram of the IR system was figured out and constructed.

• Then we find the online compiler of the KL46Z, and try to do some coding in the compiler.

Stepper motor drive

• Learn some basic knowledge of Raspberry Pi and check the datasheet of the Raspberry Pi microcontroller, A4988 drive broad and NEMA 17 stepper motor.

• Connect a power supply to the motor. Do some research on the stepper motor by the datasheet and try to work out the construct circuit diagram.

Problems, Issues and Concerns

• Still unfamiliar with the KL46Z microcontroller.

• IR receiver was not able to receive the signal from the IR LED.

Plan for next week

• Construct the IR circuit base on the circuit diagram.

• Do some coding for the IR and Motor, and try to drive the stepper motor and the IR system.