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    ysinh

    @ysinh

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    Best posts made by ysinh

    • RE: 💬 Building a Raspberry Pi Gateway

      A tiny hint for the users of domoticz :
      ./configure --my-gateway=serial --my-serial-is-pty --my-serial-pty=/dev/ttyUSB20
      make
      sudo ./examples_linux/mysGateway -d

      🙂 i hope this helps
      then in the hardware setup
      MySensors Gateway USB
      serial port: /dev/ttyUSB20

      posted in Announcements
      ysinh
      ysinh
    • RE: Air Quality Sensor

      @tuimanso
      There seems a general misunderstanding about how those gas sensors really work: the "heater" must be switched on (5v) and "off"(1.4v) for the air sample going in and out of the sensor, when heating the air sample expands and goes out of the sensor, then in the cool down period the remaining air contracts and sucks in a new sample.
      Those boards with mq... sensors only provide fixed 5v heating, so this can never work reliable
      the 1.4v is needed to keep the sensor on a minimum temperature,example 40'c for the catalyst to react, the 5v will heat it up to example 80'c, to clean the catalyst and air flows out of the sensor
      http://i49.tinypic.com/2rzdqgn.png something like this will work
      Soon I will report my results together with a modified sketch for mysensors 2.0

      posted in Hardware
      ysinh
      ysinh

    Latest posts made by ysinh

    • RE: 💬 Building a Raspberry Pi Gateway

      A tiny hint for the users of domoticz :
      ./configure --my-gateway=serial --my-serial-is-pty --my-serial-pty=/dev/ttyUSB20
      make
      sudo ./examples_linux/mysGateway -d

      🙂 i hope this helps
      then in the hardware setup
      MySensors Gateway USB
      serial port: /dev/ttyUSB20

      posted in Announcements
      ysinh
      ysinh
    • RE: Air Quality Sensor

      @tuimanso
      There seems a general misunderstanding about how those gas sensors really work: the "heater" must be switched on (5v) and "off"(1.4v) for the air sample going in and out of the sensor, when heating the air sample expands and goes out of the sensor, then in the cool down period the remaining air contracts and sucks in a new sample.
      Those boards with mq... sensors only provide fixed 5v heating, so this can never work reliable
      the 1.4v is needed to keep the sensor on a minimum temperature,example 40'c for the catalyst to react, the 5v will heat it up to example 80'c, to clean the catalyst and air flows out of the sensor
      http://i49.tinypic.com/2rzdqgn.png something like this will work
      Soon I will report my results together with a modified sketch for mysensors 2.0

      posted in Hardware
      ysinh
      ysinh