12. Output devices#
measure the power consumption of an output device**
We noticed that the voltage level was not constant during motor operation. A large voltage drop happened occasionally.
With the advise of Kamakura instructor, we measured the non stable voltage level with oscilloscope.
- Connect 0.1Ω cement resistor between the regulator and micro controller.
- Connect CH1 probe to resistor.(Regulator side)
- Connect CH2 probe to resistor. (Micon side)
- Measure the difference between CH1 level and CH2 level using auto calculate function of the oscilloscope.