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Case 11: Feed at Fixed Time

Introduction​

  • Feeding animals in manual is not convenient, we can make a device that could feed them at fixed time.

Function​

  • Make the timing with RTC module and program to drive the servo for feeding at the fixed time.

Picture​

Hardware Connection​

Connect the servo to P1, and the OLED to IIC on IoT:bit.

Software Programming​

Click "Advanced" in the MakeCode to see more choices.

For programming, we need to add a package: click "Extensions" at the bottom of the MakeCode drawer and search with "iot-environment-kit" in the dialogue box to download it.

For programming, we need to add a package: click "Extensions" at the bottom of the MakeCode drawer and search with "neopixel" in the dialogue box to download it.

Notice: If you met a tip indicating that some codebases would be deleted due to incompatibility, you may continue as the tips say or create a new project in the menu.

Program​

Initialize the OLED display as 128×64m and the time settings of RTC module, set the sevo to drive to 0°.

Display the current seconds on OLED screen.

If the second is 1, set the servo to drive to 90°, pause 5000ms and then set the servo to drive to 0°.

Link: https://makecode.microbit.org/_T8z5tm3T2CfA

Result​

  • The device makes the feeding every 1 minute.