Welcome to Our Community

Some features disabled for guests. Register Today.

BlackBox: 0-5V analog output

Discussion in 'Controller Boards' started by GS76, Apr 26, 2022.

Tags:
  1. GS76

    GS76 New
    Builder

    Joined:
    Mar 22, 2020
    Messages:
    37
    Likes Received:
    14
    I have read the documentation and see that BlackBox outputs a 0-10V analog signal.

    I have a brushless speed controller that can accept a 0-5V analog signal.

    What is the best way of handling this? Is using a resistor the best option?
     
  2. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Mar 1, 2017
    Messages:
    10,946
    Likes Received:
    3,479
    We do not have a safe and proven method for that. Sure the controller doesn't accept PWM or some other method too? Link to the product please?
     
  3. GS76

    GS76 New
    Builder

    Joined:
    Mar 22, 2020
    Messages:
    37
    Likes Received:
    14
    Thank you for the assistance.

    Specifications - SOLO UNO - Solo Motor Controllers
     
  4. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Mar 1, 2017
    Messages:
    10,946
    Likes Received:
    3,479
    They say:

    So you should be able to directly off the PWM output. Contact About Us for specifics on how to wire it to their controller.

    Section 2g of docs:blackbox:layout [OpenBuilds Documentation] is our side of it
     
  5. GS76

    GS76 New
    Builder

    Joined:
    Mar 22, 2020
    Messages:
    37
    Likes Received:
    14
    Thank you for this information.

    Much appreciated.
     
  6. GS76

    GS76 New
    Builder

    Joined:
    Mar 22, 2020
    Messages:
    37
    Likes Received:
    14
    I received the response from the brushless motor controller's designers (SOLO) once they had read "Section 2g" in the link you had provided.

    Their response was as follows (in italics):

    The highlighted section says the module supports a 5V levelled PWM pulse for the output, so if the desired speed is defined by the duty cycle of that PWM pulse, then it will totally match with SOLO, meaning that if the speed increases we are expecting to see some increase in the PWM duty cycle and vice versa, the frequency of the PWM though can be anything greater than 5kHz, let me know if you need more information.
     
  7. Peter Van Der Walt

    Peter Van Der Walt OpenBuilds Team
    Staff Member Moderator Builder Resident Builder

    Joined:
    Mar 1, 2017
    Messages:
    10,946
    Likes Received:
    3,479
    Yes, Grbl's PWM is duty cycle scaled, so (if you carefully wire it up to prevent damage) it should work
     
  8. GS76

    GS76 New
    Builder

    Joined:
    Mar 22, 2020
    Messages:
    37
    Likes Received:
    14
    Thank you for the information. They are much appreciated.
     

Share This Page

  1. This site uses cookies to help personalise content, tailor your experience and to keep you logged in if you register.
    By continuing to use this site, you are consenting to our use of cookies.
    Dismiss Notice