This weekly report discusses progress made on a product design project. The report indicates that the student made changes to the circuit board layout, switching from a PCB to a more versatile board for the temperature comparator circuit. The student created new PCBs using an Altium design program. Circuit components including the LM35 temperature sensor were installed in a kettle. The transformer was replaced with a higher current model. Strengths included use of electronics and digital circuits without a microcontroller. Weaknesses were limited space inside the kettle and potential water leaks around the pump. Plans for next week were not specified.

1. [INC 281 MULTIDISCIPLINARY WORKSHOP WEEKLY REPORT] May 9, 2012
Name-Surname Chatchawan Moonta
Student ID. 54261505
Group Name Fueng
Engineering Arm , Por , Fam , Sanook , Kwang , Will , Mart ,
Team Members Neung , Peak , Art
Product Design
P’Mhor, P’Pum , P’Mint , P’Pin
Team Members
Weekly Progress
This week I make pcb and change some circuit from on PCB to versatile bord. That is
comparator temperature circuit because it fails both performance and size. In part make pcb I
use altium program make pcb 2 two face so I used dryfilm and caustic by myself. I and
members in group cooperate install all circuit and lm35 in kettle involve change transformer is
center tap 9v 0 9v 800 mA which transformer older current not enough and calculate some
values success
Figure.1 comparator temperature circuit Figure.2 install lm35
Engineering Analysis
Strong Point
-Used electronics and digital circuit.
-Don’t used microcontroller
Weak Point
-Space of kettle not enough install
-water leak about pump
Next Week Job
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Department of Control System and Instrumentation Engineering
KING MONGKUT’s UNIVERSITY OF TECHNOLOGY THONBURI