On Tuesday (Nov 4, 2014) the team had a meeting with TA and we reviewed the progress from the previous week. After the meeting we set the following tasks for this week:
1. M.S – send NDA/IP forms to the client;
2. M.M, M.L, W.Y – to implement the amplifier using the newly purchased INA125, test the load cell and acquire an equation;
3. M.S and O.Y – to have a separate working code for the microcontroller and LCD;
All tasks for this week were completed
1. M.S sent the NDA/IP forms signed by the professor and the group members to the client;
2. M.M, M.L and W.Y used INA125 to implement an amplifier (pic 1) that gives a theoretical amplification of 5000 times. In practice, we acquired an amplification of 4 times that was sufficient for the first prototype. The load cell was tested using different weights and an equation was determined that can be used to obtain voltages for a range of weights (pic 2).
3. M.S and O.Y implemented a working code that displays a dummy voltage on the LCD.
Abbreviations: M.S – Maria Serbanescu, O.Y – Oscar Yang, M.L – Michael Li, W.Y – Weng Fey Yu, M.M – Mustafa Mussayev.