• Profile picture of Chuah Wei Jie

    Chuah Wei Jie posted an update 5 years, 1 month ago

    I tried to connect the external power source like this, but it seems like the nervo board does not recieve any power…
    • Profile picture of Gael Langevin
      Gael Langevin replied 5 years, 1 month ago

      Hello,

      Only these leds will light up when the Nervo Board is powered but not connected to a PC via the Arduino. Apparently looking at your photo, you do not have these 4 optional leds soldered. (they are not necessary for the board to work, it’s optional.)
      Connect the Arduino to the PC and check with a voltmeter, if you have power to the servos.
      Or use the SERVO_CALIBRATION.bat to test.
      InMoov front soldering

      • Profile picture of Chuah Wei Jie
        Chuah Wei Jie replied 5 years, 1 month ago

        The servo didn’t response when I try to move it using SERVO_CALIBRATION.bat

        • Profile picture of Gael Langevin
          Gael Langevin replied 5 years, 1 month ago

          Did you upload the MRLComm.ino in your Arduino?

          • Profile picture of Chuah Wei Jie
            Chuah Wei Jie replied 5 years, 1 month ago

            Yup, definitely.

            • Profile picture of Gael Langevin
              Gael Langevin replied 5 years, 1 month ago

              Ok, you have selected the correct COM port in SERVO_CALIBRATOR.bat ?
              and the correct pin for your connected servo according to this map:

              http://inmoov.fr/wp-content/uploads/2019/02/default-hardware-map7.jpg

            • Profile picture of Chuah Wei Jie
              Chuah Wei Jie replied 5 years, 1 month ago

              Yes. It’s a COM3 (I had checked in Device Manager). I currently test on the Neck part, which are pin 12 and 13 only, but the servo doesn’t response. I shows that the connection succeed for the Arduino by the way. I wonder, just maybe, is it the problem of the connection/wiring/soldering?

              • Profile picture of Gael Langevin
                Gael Langevin replied 5 years, 1 month ago

                It’s odd, there is not much that can go wrong with the soldering, beside making a bad shortcut.
                Which you would have seen the smoke.

                I suspect the ribbon cables in the male headers. Maybe a ribbon cable inverted between the two end points headers.

                Do you have a voltmeter?
                You can test to see if the power is going to the servo from the XT60 connectors.
                First, without the connected ribbon cable, test directly on the Nervo Board, and then test with the ribbon and the breakout board.
                Nota: Make sure to never connect the ARM breakout board to the HAND on the Nervo board(and vice versa), it would short cut the ribbon cable. (Smoke for sure!)