Today we (me, Zach, and Sam) finished part 1 of the calorimetry project, which was to set up a mechanical relay with a LED. The goal of the project is to measure the heat capacity of a liquid, using a 300w heating element to heat the liquid, a morot to mix it, and a temperature probe to collect data. Here is a video of it in action:
It is wired with a push button so that the button must be pressed for the LED to turn on, but the mechanical relay will keep swapping even if the button isn't pressed.