(by Minhquan Tran, Engineering Team)
This week, our team has been working on calibrating our temperature sensor and establishing a linear coefficient between temperature and resistance. To do so, we experimented with different ways to change the environment’s temperature slowly; ultimately, we settled with using a hotplate to gradually increase temperature of a beaker filled with water.
The temperature sensor is submerged inside the water, and the experiment begins: resistance is measured from the live circuit and compared with a temperature read-out from a thermometer. The results are incomplete this week, though we are observing strong linearity with an R^2 value of 0.9991.
We are hoping to complete our experiment and establish an accurate linear coefficient next week, with goals of integrating these techniques into a smaller-scale sensor that we will be fabricating in the near future. We are also starting to look into programming our microcontroller for wireless data transmissions; we expect to be able to make primitive use of this by the end of next week.
