1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] April 25, 2012
Name-Surname KritsakornWeekana
Student ID. 54261502
Group Name Id(instinct design)
Engineering Team Kung 2b
Members Mic 2b
Product Design P’ploy
Team Members P’jub
Weekly Progress
Today I design PCB two layers by used surface device and I plumbed circuit, then testing this circuit
by used micro, sound IC and sensor CO2 to connect all. I used Mega8 type QPF. It has 32 pins and I
use resister-chip, capacitor-chip and Opamp-chip. All of device are surface mouse.
Output form CO2 sensor send to Zero-span circuit for expand voltage because output from
CO2 sensor is low voltage, it not use with ADC Micro.
Conclusion. When sum all of circuit together, it can working correctly.
Figure Finished PCB with surface device.
Engineering Analysis
Strong Point
-Save area because I used surface device.
Week Point
-Surface is very small, it made me hard to plumb.
-Sensor use 20 minutes to warming.
Next Week Job
-Setting circuit and device to structure of product.
Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI