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    Martin Tellblom

    @Martin Tellblom

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    Best posts made by Martin Tellblom

    • RE: Clean looking sensor node

      @Nca78 said:

      such a polished look

      Actually it can have that look if you print with ABS and treat it with acetone vapor afterwards.
      For example look at these pictures

      Have treated my prints that way many times and the result is very good.

      posted in Enclosures / 3D Printing
      Martin Tellblom
      Martin Tellblom
    • RE: Read LED full size works, smd does not

      Found the problem myself 🙂
      There was another resistor on the other side of the PCB. If I connect the cable there instead it works

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Clean looking sensor node

      Oh no not good.

      Had to buy some new cases ....... darn 🙂

      They are so Wife friendly...

      posted in Enclosures / 3D Printing
      Martin Tellblom
      Martin Tellblom
    • Nice power regulator for testing

      I bought a couple of these to test and they are working great.
      If supplied with 12V you will have 3.3V, 5V and 12V

      They are limited to 800mA

      http://www.ebay.co.uk/itm/322204325197?_trksid=p2057872.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Office plant monitoring

      @mfalkvidd

      I at the office right now, measure them when I home

      posted in My Project
      Martin Tellblom
      Martin Tellblom
    • RE: Getting started

      @vizonyc
      I think I have the setup you like to have.

      Running Openhab with mosquitto on a virtual server.The openhab uses KNX, 1Wire, sonos and MQTT bindings.

      My Z-Wave devices is connected to a Raspberry with the Z-Wave board Razberry that uses MQTT to communicate with openhab.

      Finally the connection to Mysensors is done with the GatewayW5100MQTTClient and is user for example like "Temp Gäststugan" that shows the temperature in the guesthouse.

      I do not have any relays in the mysensors network yet, but I have them in my Z-wave network and communicate thru MQTT to the Razberry

      On top of that Im running Dashing Dashing

      So we have dashing on a tablet inside the door that displays all info and we can interact with all systems(KNX, Z-Wave, 1-Wire, Mysensors) from one place. We have also added things like when the next bus is leaving and so on.
      dashing

      And it's working great. So if you have any questians please let me now so can we see if I can help you set it up

      posted in General Discussion
      Martin Tellblom
      Martin Tellblom
    • RE: Easy/Newbie PCB for MySensors

      Recived my boards today and I love them, I ordered the white ones and they are looking really great

      Thanks @sundberg84 !

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Office plant monitoring

      It seems like @sundberg84 nailed it 🙂
      The battey metering I use with his PCB is this:

      #if defined(__AVR_ATmega2560__)
        analogReference(INTERNAL1V1);
      #else
        analogReference(INTERNAL);
      #endif
      

      And that reflect on all analog channels and break the function..
      After I removed the battery sensing code it work great

      posted in My Project
      Martin Tellblom
      Martin Tellblom
    • Add a structure level under My Project?

      Not so much a request as wishing.

      Would it be possible to add a structure under My Project to collect all the SenseBender, Slim Node projects, Easy/Newbie PCB and so on so it would be simpler to find?

      A structure like this for example:
      My Project
          SenseBender
          Slim Node
          Easy/Newbie PCB

      Or to pin a topic for containing links to all projects

      This maybe already been up for discussion ?

      posted in Feature Requests
      Martin Tellblom
      Martin Tellblom
    • RE: PowerSaving cutting

      Thank you, I try that first.
      I cut the red LED and let the blue one be (since it just blinks a couple of times when starting up)

      posted in Hardware
      Martin Tellblom
      Martin Tellblom

    Latest posts made by Martin Tellblom

    • RE: Rebuild NETATMO Wind Sensor

      Here is a very good page explaining the two methods of ultrasonic anemometers.
      http://www.dl1glh.de/ultrasonic-anemometer.html

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      @gohan Where I live we can't have one with moving parts, There is often over 35m/s in the winter storms.
      Thats why I bought the Netatmo in the first place. But It's maybe better to build an own, I have a lot of the parts

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      There is a good one here
      https://soldernerd.com/category/arduino-ultrasonic-anemometer/
      And another one for a selfbuild like the Netatmo uses with bouncing

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      @gohan Its static

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      the top above the transducers are plat and it says in the isntruction that you should avoid touching the area.

      I have a broken outdoor sensor with temp, humid, Co2 and so on but there a very small ship on that one

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      It measure it with four ultrasonic transducers that bounces their beam as you can see in this picture:
      alt text

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Rebuild NETATMO Wind Sensor

      Yes you are right, it is costly, but if I with a handheld anemometer and another with "spoons" at the same place can read a windspeed of 18m/s and Netatmo says 7 m/s (and there is nothing to configure regarding to Netatmos support) I would like to be able to do my own calibration.

      What Ultrasonic sensor or what did you mean?

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • Rebuild NETATMO Wind Sensor

      Hi,
      Anyone rebuilt NETATMO wind sensor to work with mysensors? Or some other system.

      I have used Netatmo for about three years now and I am quite disappointed over what I can do with it.

      So has anyone rebuild the windsensor to report to another system like mysensors or so.

      What I'm after is to use the ultrasonicpart of the sensor and report to my inhouse mysensors gateway.

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Reflow Oven

      @bjornhallberg Did you find a good oven to use in Sweden? I'm looking in to building one myself now

      posted in Hardware
      Martin Tellblom
      Martin Tellblom
    • RE: Sun / cloud sensor?

      Sounds very interesting 🙂

      posted in Hardware
      Martin Tellblom
      Martin Tellblom