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  3. Sensebender Micro

Sensebender Micro

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  • G Offline
    G Offline
    gloob
    wrote on last edited by
    #158

    Received my Micros today. Luckily there was no custom and a lot of pins to solder. Can't wait to solder them on wednesday on work and test them.

    Is there any instruction how to solder everything? On which side the radio module needs to be soldered.

    tbowmoT 1 Reply Last reply
    0
    • G gloob

      Received my Micros today. Luckily there was no custom and a lot of pins to solder. Can't wait to solder them on wednesday on work and test them.

      Is there any instruction how to solder everything? On which side the radio module needs to be soldered.

      tbowmoT Offline
      tbowmoT Offline
      tbowmo
      Admin
      wrote on last edited by tbowmo
      #159

      @gloob

      This might help you out :)

      1 Reply Last reply
      0
      • G Offline
        G Offline
        gbfromhb
        wrote on last edited by
        #160

        I hope this question has not been answered already and I did not miss the answer. I was thinking about connecting a motion sensor to this and was hoping that one of the digital pins supports an interrupt. Is there an interrupt available?

        M 1 Reply Last reply
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        • hekH Offline
          hekH Offline
          hek
          Admin
          wrote on last edited by
          #161

          @gbfromhb

          D3 is available on the side-pins. D2 is routed to the radio but can be used with some hacking.

          M 1 Reply Last reply
          0
          • G gbfromhb

            I hope this question has not been answered already and I did not miss the answer. I was thinking about connecting a motion sensor to this and was hoping that one of the digital pins supports an interrupt. Is there an interrupt available?

            M Offline
            M Offline
            mvader
            wrote on last edited by
            #162

            @gbfromhb said:

            I hope this question has not been answered already and I did not miss the answer. I was thinking about connecting a motion sensor to this and was hoping that one of the digital pins supports an interrupt. Is there an interrupt available?

            I'm planning to do the same thing.
            i ordered my 5v step up regulators to support the PIR sensor.
            although I hope adding the motion isnt going to kill the batteries.

            1 Reply Last reply
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            • G Offline
              G Offline
              gbfromhb
              wrote on last edited by gbfromhb
              #163

              @mvader
              I have so far had no problems running my PIR sensors at 3.3v with the following hack.

              http://techgurka.blogspot.com/2013/05/cheap-pyroelectric-infrared-pir-motion.html

              You can not do this with all PIR Sensors from what I understand, but one of the ones listed in the MySensors store is what I've been using. Go down to the bottom of the article.

              M 2 Replies Last reply
              0
              • G Offline
                G Offline
                gbfromhb
                wrote on last edited by
                #164

                @Hek
                Thanks, I saw the D3, but I'm new enough to this adventure that I was not sure if I should have assumed that it also had an interrupt like all the other boards.

                1 Reply Last reply
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                • tbowmoT Offline
                  tbowmoT Offline
                  tbowmo
                  Admin
                  wrote on last edited by
                  #165

                  @gbfromhb

                  I tried to keep the naming, and pins on the atmega, the same as an ordinary arduino :)

                  1 Reply Last reply
                  0
                  • G gbfromhb

                    @mvader
                    I have so far had no problems running my PIR sensors at 3.3v with the following hack.

                    http://techgurka.blogspot.com/2013/05/cheap-pyroelectric-infrared-pir-motion.html

                    You can not do this with all PIR Sensors from what I understand, but one of the ones listed in the MySensors store is what I've been using. Go down to the bottom of the article.

                    M Offline
                    M Offline
                    mvader
                    wrote on last edited by
                    #166

                    @gbfromhb said:

                    @mvader
                    I have so far had no problems running my PIR sensors at 3.3v with the following hack.

                    http://techgurka.blogspot.com/2013/05/cheap-pyroelectric-infrared-pir-motion.html

                    You can not do this with all PIR Sensors from what I understand, but one of the ones listed in the MySensors store is what I've been using. Go down to the bottom of the article.

                    wow.. nice.. thanks for the info! I will give this a go asap.

                    1 Reply Last reply
                    0
                    • G Offline
                      G Offline
                      gloob
                      wrote on last edited by
                      #167

                      Hello,

                      I have one more question. Is it possible to power the micro from the ftdi pins? I would like to use jumper wires.

                      1 Reply Last reply
                      0
                      • tbowmoT Offline
                        tbowmoT Offline
                        tbowmo
                        Admin
                        wrote on last edited by
                        #168

                        @gloob

                        Yes it's possible to power it from the FTDI pins, if you want to..

                        1 Reply Last reply
                        0
                        • G Offline
                          G Offline
                          gloob
                          wrote on last edited by
                          #169

                          Are there any recommendations for a low power temperature, humidity sensor regarding the update cycle.

                          Currently I plan to wake up the sensor each 10 minutes instead of each 1 minute to update the values. This should increase the duration of the battery. A complete update of all values if performed each 30 minutes as usual.

                          1 Reply Last reply
                          0
                          • tbowmoT Offline
                            tbowmoT Offline
                            tbowmo
                            Admin
                            wrote on last edited by
                            #170

                            I would probably choose 5 minutes interval instead.. I have updated the sensebendermicro sketch tonight (just waiting for @hek to approve it). so it holds of on the transmissions a bit. Now the temperature needs to change more than 0.5 degrees from the previous transmitted value. OR
                            humidity needs to change more than 0.5, measured with a moving average. OR
                            30 minutes since last transmission.

                            1 Reply Last reply
                            1
                            • G Offline
                              G Offline
                              gloob
                              wrote on last edited by gloob
                              #171

                              I found that when I power the micro from 2 batteries I get the following error:

                              T: 23.21
                              H: 50
                              send: 104-104-0-0 s=1,c=1,t=0,pt=7,l=5,st=fail:23.2
                              send: 104-104-0-0 s=2,c=1,t=1,pt=2,l=2,st=fail:50
                              

                              This does not happen when I power it from the FTDI programmer.
                              Does anybody have any ideas?
                              The batteries have a voltage of 3.25V

                              I did not have this issues with my arduino nano sensors. and i did use the same radio modules.

                              When I check the modules they seem to be real nrf24l01+ modules:

                              
                              STATUS		 = 0x0e RX_DR=0 TX_DS=0 MAX_RT=0 RX_P_NO=7 TX_FULL=0
                              RX_ADDR_P0-1	x00 = 0xe7e7e7e7e7 0xf0f0f0f0d2
                              RX_ADDR_P2-5	x00 = 0xc3 0xc4 0xc5 0xc6
                              TX_ADDR		 = 0xe7e7e7e7e7
                              RX_PW_P0-6	x00 = 0x00 0x20 0x00 0x00 0x00 0x00
                              EN_AA		 = 0x3f
                              EN_RXADDR	x00 = 0x03
                              RF_CH		 = 0x4c
                              RF_SETUP	x00 = 0x07
                              CONFIG		 = 0x0f
                              DYNPD/FEATURE	x00 = 0x00 0x00
                              Data Rate	 = 1MBPS
                              Model		 = nRF24L01+
                              CRC Length	 = 16 bits
                              PA Power	 = PA_HIGH
                              
                              1 Reply Last reply
                              0
                              • F Offline
                                F Offline
                                Fabien
                                wrote on last edited by
                                #172

                                I have a batch of 5 sensebender and actually I build 3 and one of them doesn't work properly. Lot of st:fail when I put my finger on the board it works better so I try to make all solder one more time but it's not ok. I try with few radios and same radios work well on the others sensbender.
                                Any idea or way to exchange with Itead ?

                                1 Reply Last reply
                                0
                                • tbowmoT Offline
                                  tbowmoT Offline
                                  tbowmo
                                  Admin
                                  wrote on last edited by
                                  #173

                                  @Fabien

                                  Where exactly do you put your finger on it, in order to get it working?

                                  1 Reply Last reply
                                  0
                                  • tbowmoT Offline
                                    tbowmoT Offline
                                    tbowmo
                                    Admin
                                    wrote on last edited by
                                    #174

                                    @gloob

                                    It's the same power rail (FTDI, and the battery connector). What do you supply the board with, thru the FTDI header?

                                    1 Reply Last reply
                                    0
                                    • F Offline
                                      F Offline
                                      Fabien
                                      wrote on last edited by
                                      #175

                                      @tbowmo difficult to answer this question. It seems to be on Atmega but after trying to resold it's not better. I resol capacitors, resistors ... I don't know what to do now ...

                                      1 Reply Last reply
                                      0
                                      • tbowmoT Offline
                                        tbowmoT Offline
                                        tbowmo
                                        Admin
                                        wrote on last edited by
                                        #176

                                        @Fabien

                                        Did you also resolder the atmega itself?

                                        Could you try and measure supply current it uses?

                                        1 Reply Last reply
                                        0
                                        • F Offline
                                          F Offline
                                          Fabien
                                          wrote on last edited by
                                          #177

                                          current when powering on : 20 mA and during sleeping about 20uA (not very accurate).

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