Problems Encountered.

After some serious considerations regarding the current design proposal for the circuit, the team members has decided to drop the design and will soon propose for a Design Change Request. Reasons for the changes are due to the complexity of the circuit and the time contraint faced. This will be explained in detail more in the DCR that will be produced and handed in very soon. Meanwhile, the new product that is to replace the old design has already gone through IC Testing and it has been tested to work already. It uses a NAND Logic Gate to function as a water level detected that will beeep whenever the water level in any compartment reaches a level determined by the user. This is thus trigger an alarm to warn te user that the water level has reached the limit so that the user is able to take immediate action.

NAND Gates basically consist of the combination of AND and NOT Gates which are combined to form a NAND Gate. In lay man terms, It's the opposite result that a user would get operating the AND Gate.

INPUT		OUTPUT
A	B	A NAND B
0	0	1
1	0	1
0	1	1
1	1	0

Source : Wikipedia


Other Pictures

A Trip to Farnell which the group members took.


The list of things that are sold in Farnell. A very thick datasheet book.


Items bought in Ang Electronics Sdn Bhd at Jln Meru, Klang


Tong Jiun and Jin Yang working on our new design product. Soldering.