WEEK 4-FYP2

15/3/2017


Activity:  Find the component and mechanical items that will use to develop the project

Objective:  To make sure the components and mechanical items that has chosen is suitable for this project

Content/procedure:

    1. Search information's on the internet about the component such as stepper motor, LCD 20x4, microcontroller unit, push button, silicon tube and small others part.
   
STEPPER MOTOR (HYBRID SERIES)

Figure 1: L shape motor bracket

Figure 2: Hybrid stepper series

Features

• Two phase 4 lead wires bipolar stepper
• Hybrid stepper series
• High torque
• 1.8 degrees-per-step
• single shaft
• wire with XH 4 pin connector

Specifications

• Model: 23HD5625-P4-8D
• No. of Phase: 2
• Lead Wires: 4
• Step Angle Accuracy: ±5%(Full step, no load)
• Speed: Various Speed (Low speed)
• Motor Depth: 56mm
• Step Angle: 1.8 Degree
• Rated Current 2.8A
• Rated Voltage: 12V - 24V DC
• Holding Torque: 1.26N.m
• Shaft Radial force: 10Kg/cm
• Shaft: 8mm round shaft
• Wire length: 30cm
• Frame size: 56mm x 56mm 

Graphic LCD 128x64 Pixel Yellow Backlight Parallel Interface Display Module 12864B V2.0

Figure 3: LCD display 20 x 4

Features:

• LCD display module with yellow blacklight
• Wide viewing angle and high contrast
• Display construction:128 x 64 DOTS (128x64 = 1024) pixels.
• Easily interfaced with a MCU
• Low-power consumption

Specification:

• Number of Characters: 20 characters x 4 line
• Input Voltage Range: DC 4.5V to 5.5V
• Operation Voltage for LCD: 5V DC
• Interface: 6800 8-bit Parallel
• Display type:Positive Tranflective
• Backlight:LED Yellow / 5.0V
• Driving method:1/64 duty, 1/9 bias
• Viewable area: 55 x 27.5mm
• Module Size: 93 x 70mm
• Weight: 70g

A minimum system board ATMEL with USB ISP

Figure 4: Minimum system board Atmel

Figure 5: Pin descriptions of AT89S52 

The AT89S52 is a low-power, high-performance CMOS 8-bit microcontroller with 8K bytes of in-system programmable Flash memory. The device is manufactured using Atmel’s high-density non-volatile memory technology and is compatible with the industry-standard 80C51 instruction set and pinout. The on-chip Flash allows the program memory to be reprogrammed in-system or by a conventional non-volatile memory programmer. By combining a versatile 8-bit CPU with in-system programmable Flash on a monolithic chip, the Atmel AT89S52 is a powerful microcontroller which provides a highly-flexible and cost effective solution to many embedded control applications.

Results/analysis

To develop this project, I decided to use LCD display 20 x 4 because it will be easy to interface with the microcontroller instead of using 2 LCD 16 x 4 . Moreover, if I use 2 LCD  16 x 2 display, it will be like complicated and the i/o AT8S52 is not enough . for the microcontroller, I choose to use AT89S52.

Conclusion

For this project, the input will be the fluid with waste product that will flow along the silicone tube that will control by the peristaltic pump 1 (stepper motor 1). The LCD display will display each process during the treatment. The fluid with waste product will flow into the water filter and the water filter will trapped the waste product (microbeads). After filtration process, the clean fluid (output) will return to the bag/beaker.