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  • home automation
  • dyi
  • home-automation
  • cabinet
Related

DIY Smart Cabinet

ashurino
ashurino over 8 years ago

Hey there. I want to build a smart cabinet.

In my cabinet, I have several consoles and a HTPC/Steam Machine.
I want to equip that cabinet with some TMP36 sensors, a fan and maybe motors.

I am not sure what MCU or makerboard I should use.

Programming in Python, JavaScript, C, C++ are no problem to me.

In the end I will make a custom component for home-assistant (home-assistant.io), where I can see the temperature of the cabinet.

 

Here is the logic:
- There are around 2 to 4 tmp36-sensors build into the cabinet. (Inside bottom, Inside top left, Inside top right and one outside)
- Based on the temperature difference, a 4pin fan should be controlled with PWM.
- If the fan is not doing enough of a temperature difference, the cabinet-door should open automatically.

 

Here is the hardware I currently have:
- 4-5 Arduinos
- 1 Arduino Ethernet-Shield with PoE
- 1 Arduino Yûn with PoE
- 2-3 Raspberry Pi 3B
- ~8 TMP36 sensors
- 12V PSU
- Voltage divider 12V for the fan and 5 for the MCU
- The 4pin fan.
- Cables
- 4 pin male connector for the fan
- Barrel connnector

 

Things that are unclear:
- There has to be a case, where the MCU/Makerboard is in, including the custom hardware.
- It needs network access. Preferable wired.

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  • ashurino
    ashurino over 8 years ago in reply to DAB +1 suggested
    I want it to have 2 modes. Mode 1 autonomous: - The MCU/PC detects the temperature in multiple places inside the cabinet and decides how fast a fan should run inside it. - I am also thinking about a motor…
  • ashurino
    ashurino over 8 years ago in reply to DAB +1
    Do you have any idea for a mechanism to open and close the doors, and still allow human interactions with the door?
  • DAB
    DAB over 8 years ago in reply to ashurino +1 suggested
    You have a lot of options. I would go with motors, cables and pulleys. Lever arms enable you to keep the motors small and a few well placed springs will help open and close them. A good PIR or Ultrasonic…
Parents
  • DAB
    0 DAB over 8 years ago

    Interesting idea.

     

    What is your end goal for the cabinet?

     

    DAB

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  • ashurino
    0 ashurino over 8 years ago in reply to DAB

    I want it to have 2 modes.

     

    Mode 1 autonomous:

    - The MCU/PC detects the temperature in multiple places inside the cabinet and decides how fast a fan should run inside it.

    - I am also thinking about a motor that openes the door slightly on heavy load.

     

    Mode 2 controlled:

    - I can controlll the speed of the fan on my Home-Automation hub (Home-Assistant).

    - Maybe even opening the door.

     

    When Mode 2 is active AND the temperatures raises. Switch automatically to Mode 1.

     

    The Goal is:

    - Being a lazy gamer and also tinkering around with Home-Automation.

    - Playing games without have to open the door of the cabinet in order to stop it from overheating.

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  • ashurino
    0 ashurino over 8 years ago in reply to DAB

    I want it to have 2 modes.

     

    Mode 1 autonomous:

    - The MCU/PC detects the temperature in multiple places inside the cabinet and decides how fast a fan should run inside it.

    - I am also thinking about a motor that openes the door slightly on heavy load.

     

    Mode 2 controlled:

    - I can controlll the speed of the fan on my Home-Automation hub (Home-Assistant).

    - Maybe even opening the door.

     

    When Mode 2 is active AND the temperatures raises. Switch automatically to Mode 1.

     

    The Goal is:

    - Being a lazy gamer and also tinkering around with Home-Automation.

    - Playing games without have to open the door of the cabinet in order to stop it from overheating.

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