Activity – Marten de Groot

Marten de Groot posted an update 9 years ago

This is what I’ve printed yesterday, it needs some smalle updates to fit the Arduino better
When this all fits well, I will share this @ ThingiFirse including the new servo pulley !
- Jaideep Joshi replied 8 years, 6 months ago
  
  Hey Marten, that seems like a great modification. I have a question if you have a moment, since you designed the nerv boards. I have one servo (Rt arm omoplate), which when connected to the nervo board, gets hot and eventually burns when connected to the nervo board. The servo works just fine on a tester etc. I have seen in the tutorial, the suggestion to test the “+” and GND connection to see if there is a reading or not. “No reading” is preferred. Can you send me a photo of where the test should happen on the nervo board? I am having a tough time understanding where to get the multimeter reading?
  - Marten de Groot replied 8 years, 6 months ago
    
    Hmm, it sounds there is something else happen with your servo connection.
    If there is a shortcut between the Arduino shield and the small PCB, the flat-cable will start getting hot !
    Please double check if there is no connection between servo outputs 10 and 11.
    
    If possible could you send me some pictures from your boards?
    - Jaideep Joshi replied 8 years, 6 months ago
      
      Thanks for trying to help me. I sent images via pvt email.
      
      Marten de Groot replied 8 years, 6 months ago
      
      Hello Jaideep,
      
      Please read this post from @juerg
      
      An error in a script and an unreachable neck position – just burned another HS805BB so badly, it burned a hole into the case and I can still smell the odor of death when entering the house.I have added now readjustable fuses for all of my large servos (PFRA 160, Reichelt.de).Hope this prevents future smoke!- juerg (@juerg) July 24, 2016
      
      Give it a try and see if this will solve your problem.
      
      @juerg
      Which servo’s are you using in combination together, which gives you this “Jitter” problem ?
      Do you have a oscilloscope ?
      If yes, could you make and share some screenshots, when you measure these connections ?