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Newb making first sensor

Scheduled Pinned Locked Moved Vera
newbwireless and se
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  • J Offline
    J Offline
    jjwalker
    wrote on last edited by
    #1

    I finally got my serial gateway working and now I'm onto making my first sensor. I have a nano hooked up to a NRF24L01 and a DHT22. I'm confused about how to hook up vcc and ground to both. There are 2 ground pins on the nano but only one 3v3. Do splice the necessary jump wires to together? Are both the ground pins on the nano the same thing?

    Thanks

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    • J Offline
      J Offline
      jjwalker
      wrote on last edited by
      #2

      I think I figured it out. I looked at the data sheet for the dht22 and it takes 3 -6v so I just powered the sensor with 5v from the nano. I guess both grounds are the same? The sketch uploaded and Serial Monitor shows humidity and temp.

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      • petewillP Offline
        petewillP Offline
        petewill
        Admin
        wrote on last edited by
        #3

        Yes, the grounds are the same. You can also splice the wires. Just make sure if you're doing power you don't exceed the mA.

        My "How To" home automation video channel: https://www.youtube.com/channel/UCq_Evyh5PQALx4m4CQuxqkA

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        • petewillP petewill

          Yes, the grounds are the same. You can also splice the wires. Just make sure if you're doing power you don't exceed the mA.

          J Offline
          J Offline
          jjwalker
          wrote on last edited by
          #4

          @petewill said:

          Yes, the grounds are the same. You can also splice the wires. Just make sure if you're doing power you don't exceed the mA.

          Right on, thanks for the response. Now I'm trying to figure out including this bad boy. I noticed that if I start serial monitor the MySensors plugin will find the device, but after that I'm stumped. In the middle of cooking dinner for the wife so I'm kinda jumping back and forth.

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          • J Offline
            J Offline
            jjwalker
            wrote on last edited by
            #5

            Oh nice! They're showing up in Vera. Gonna play with this some more later.

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            • J Offline
              J Offline
              jjwalker
              wrote on last edited by
              #6

              Oh man this is so dope! Can't believe I didn't start this sooner. Got a motion and a humidity sensor going now. Gonna have to search the forums on how to calculate for battery usage.

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              • SalmoidesS Offline
                SalmoidesS Offline
                Salmoides
                wrote on last edited by
                #7

                Be very careful. You'll get hooked on this stuff like we are and you'll have sensors and controllers all over the place. It never ends. We can't stop ourselves. You will dream up new circuits in your sleep. Ouch, that soldering iron is hot! There's always something being shipped from China. What am I going to do with the other 99 diodes in that little bag? That rosin smells different than the last roll of solder. Gee, I need one of those fancy bench multi-meters. Aww smack, I dropped that screw again! Yes dear, I'll have dinner ready once I finish this sketch. You'll go to bed and then ask yourself if you turned the soldering iron off. Be careful. You've been warned.

                --
                Sal

                J 1 Reply Last reply
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                • SalmoidesS Salmoides

                  Be very careful. You'll get hooked on this stuff like we are and you'll have sensors and controllers all over the place. It never ends. We can't stop ourselves. You will dream up new circuits in your sleep. Ouch, that soldering iron is hot! There's always something being shipped from China. What am I going to do with the other 99 diodes in that little bag? That rosin smells different than the last roll of solder. Gee, I need one of those fancy bench multi-meters. Aww smack, I dropped that screw again! Yes dear, I'll have dinner ready once I finish this sketch. You'll go to bed and then ask yourself if you turned the soldering iron off. Be careful. You've been warned.

                  J Offline
                  J Offline
                  jjwalker
                  wrote on last edited by
                  #8

                  @Salmoides said:

                  Be very careful. You'll get hooked on this stuff like we are and you'll have sensors and controllers all over the place. It never ends. We can't stop ourselves. You will dream up new circuits in your sleep. Ouch, that soldering iron is hot! There's always something being shipped from China. What am I going to do with the other 99 diodes in that little bag? That rosin smells different than the last roll of solder. Gee, I need one of those fancy bench multi-meters. Aww smack, I dropped that screw again! Yes dear, I'll have dinner ready once I finish this sketch. You'll go to bed and then ask yourself if you turned the soldering iron off. Be careful. You've been warned.

                  Haha, yeah I'm already there with my home automation stuff, plus all the equipment from my audio production stuff.. I have too many hobbies. The wife's pet peeve is that there's constantly crap on the dining table.

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