We used an oscilloscope to measure varying signals from three boards.
We started by measuring the Modular Things stepper board we used in our Machine Week group project. The Ground probe was connected to Ground on the board and the other probe was connected to one of the pins for the stepper motor.
The code we used to run the stepper motor had an acceleration parameter, that is why the oscilloscope shows a gradual incline. If the code had a constant speed the oscilloscope would show a straight line.
We also used an oscilloscope to probe an input device, a DHT22 Temperature/Humidity sensor. The Ground probe was connected to the Ground on the board and the other probe was connected to the digital signal pin on the DHT22 sensor.
We also probed a RGB LED strip. The Ground probe was connected to the Ground on the LED strip and the other probe was connected to the digital pin on the LED strip.
