Initial Design Specs
1.
Current > 1 Amp
2.
Take live data readings of voltage and current in circuit
3.
Develop LabVIEW code to control voltage
Original Circuit
Our original circuit was quite simple. We used two operational amplifiers, and a couple of resistors in conjunction with a power source. The original goal was to build something that operated at our desired current range over 1 amp, which it did.
Original GUI
The user interface in our original design was programmed and ran with LabVIEW. It required a connection to a personal computer. The user could assign voltage values in the menu, stop the experiment, and watch live graphs of the voltage and current in the circuit. However, the program had difficulties interfacing with the DC Voltage signal (PWM) that we supplied the circuit, creating a lot of hassle.
Original Code
The logic code was also coded in LabVIEW. While it looks complicated, in principle, the logic just took the voltage from the user, applied it to the circuit, and then read the voltage and current at various points. The original LabVIEW code did not have the feedback logic that we do in our current code iterations.
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A code process flow can be seen directly on the right.
