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    djdworks

    @djdworks

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    Best posts made by djdworks

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    Latest posts made by djdworks

    • RE: Powering sensors through the digital pins?

      I'm usually doing this test for each and every sensor i bought and I can confirm that many of them can work without problems.
      Sensors like DHT seems to need a delay(500), before call the sensor read function, in order to let him "boot-up" otherwise you will experience communication errors.
      Sensors connected to analog input, like soil humidity, will not give correct measurement, if the precision is not your must is possible to use pin powering,

      Pay attention on the max current required for the sensor, if you exceed that the Arduino will be damaged. Measure it before to connect!

      Radio cannot be powered by digital pin (too much current during transmission).

      Arduino has also a maximum total current that normally can never be exceeded, special attention to be given if you use radio with PA antenna!

      posted in Hardware
      djdworks
      djdworks
    • RE: My sensorboard MYS 1.0beta

      the CE and CS pin shall be different for each SPI you have connected on SPI bus.

      The pins will act as follows

      CE (chip enable) = with this pin, LOW or HIGH depending on the manufacturer, the SPI bus is connected like a switch to the device, when the device is not "connected to the bus" the pins will be in "high impedance" state. Sometimes CE is already connected with CS and is not available on device pinout.

      CS (chip select) = this pin will enable the communication with the device.

      I hope to have clarified the matter.

      Some devices (like arduino TFT) have the possibility to have a dedicated SPI bus (MOSI MISO SCK CS RST) on any pin.

      posted in Hardware
      djdworks
      djdworks
    • RE: My sensorboard MYS 1.0beta

      Well done I'm very happy for SDA and SCL added on the board thanks a lot.

      Yesterday night I had a deeper look into the PCB and i was thinking that if you add 3 pins with MISO, MOSI and SCK your board will be good also to build ethernet gateway or connect additional SPI device.

      posted in Hardware
      djdworks
      djdworks
    • RE: My sensorboard MYS 1.0beta

      I had a look to PDF schematics and i have a request to include SDA and SCL pins since many sensors uses such pins if possibile. Thanks a lot.

      posted in Hardware
      djdworks
      djdworks
    • RE: My sensorboard MYS 1.0beta

      @Mrlynx i'll be very happy to buy 10 of them

      posted in Hardware
      djdworks
      djdworks