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Week 10. Group / Output Devices

This is group assignment page for West harima student :

Student

group assignment

  • measure the power consumption of an output device

Machine I used

Stabilized Power Supply : DC310S

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Spec

  • Multi-functional display: 2.8 inch color LCD display
  • display voltage (output voltage setting and actual output value)
  • current (output current setting and actual output value)
  • actual output power
  • cumulative running time
  • channel output status
  • overvoltage/overcurrent protection setting values
  • DISPLAY key allows you to choose to display measurement data in numbers or curves
  • Rated Output Voltage: 0-30V
  • Rated Output Current: 0-10A
  • Setting/Leadback Resolution: Voltage: 10mV, Current: 1mA
  • Setting/Leadback Accuracy: Voltage: ≤0.1%±20mV, Current: ≤0.1%±10mA

DFplayer

I used DFplayer mini

1.test(DFplayer)

DFPlayer (MP3 player) and I built in week8 I measured the power consumption of the XIAO ESP32S3 board.

Please refer to week10 for how to connect to the DFPlayer. After that, connect the board to the Stabilized Power Supply.”

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result

You can see that the value you are measuring is changing after the mp3 is played. Also, while the audio is playing, the DFplayer LED is glowing.

The power consumption of DFplayer mini ,Xiao ESP32S3 board I made for week8 and the Speaker is

r

  • E=V×I

When power is On

  • 1.57W (1.56736(E) = 4.96(V) x 0.316(I))

standby power

  • 0.24W (0.24304(E) = 4.96(V) x 0.049(I))

2.OLED display

I measured the power consumption of the OLED display and the XIAO ESP32S3 board I built for week8.

Please refer to week10 for how to connect to the OLED display. After that, connect the board to the Stabilized Power Supply.

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It was successfully displayed.

result

The standby power consumption of OLED display,Board is

  • 0.25W (0.2475(E) = 4.95(V) x 0.05(I))

Impressions

  • The power consumption of DFplayer appears to be considerably higher than that of OLED displays.