Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • Users
  • Groups
Collapse
Brand Logo

ModalAI Forum

  1. ModalAI Support Forum
  2. General Questions
  3. PWM Channel Support on VOXL 2 and SDK Version Inquiry

PWM Channel Support on VOXL 2 and SDK Version Inquiry

Scheduled Pinned Locked Moved Unsolved General Questions
2 Posts 2 Posters 456 Views
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • C Offline
    C Offline
    cmall
    wrote on last edited by
    #1

    Dear all,

    We are currently using the VOXL 2 flight controller and noticed in the documentation (SDK v1.1.1) that only four PWM channels (400 Hz) are supported. Our project requires at least five channels, and ideally, we’d like to utilize all eight channels if possible.

    Could you please clarify:

    1. Does the hardware (STM32F103C8T6) support eight PWM outputs, and is this limitation purely firmware/SDK-related?

    2. Is there any change in the latest SDK (or SDK v1.3 if available) regarding PWM channel support?

    3. If expanded PWM support is not yet available, do you recommend any work-arounds (e.g., external PWM expanders) that integrate well with VOXL 2?

    We are approaching a hardware-freeze milestone, so any guidance or roadmap information would be very helpful.

    Thank you in advance for your assistance!
    IMG_6843.jpeg

    ModeratorM 1 Reply Last reply
    0
    • C cmall

      Dear all,

      We are currently using the VOXL 2 flight controller and noticed in the documentation (SDK v1.1.1) that only four PWM channels (400 Hz) are supported. Our project requires at least five channels, and ideally, we’d like to utilize all eight channels if possible.

      Could you please clarify:

      1. Does the hardware (STM32F103C8T6) support eight PWM outputs, and is this limitation purely firmware/SDK-related?

      2. Is there any change in the latest SDK (or SDK v1.3 if available) regarding PWM channel support?

      3. If expanded PWM support is not yet available, do you recommend any work-arounds (e.g., external PWM expanders) that integrate well with VOXL 2?

      We are approaching a hardware-freeze milestone, so any guidance or roadmap information would be very helpful.

      Thank you in advance for your assistance!
      IMG_6843.jpeg

      ModeratorM Offline
      ModeratorM Offline
      Moderator
      ModalAI Team
      wrote on last edited by
      #2

      @cmall the VOXL 2 IO connects via UART. You could use any breakout board, like an Arduino, to generate PWM

      1 Reply Last reply
      0

      Reading along? Create a free ModalAI Forum account to join in.

      With an account you can reply, ask your own question, get an email when a ModalAI engineer answers, and mark the reply that solved it. Your place in each thread is saved between visits.

      Questions about VOXL, Flight Core, ESCs and ModalAI drones are answered here by the engineers who build them.

      Register Login
      Reply
      • Reply as topic
      Log in to reply
      • Oldest to Newest
      • Newest to Oldest
      • Most Votes


      ModalAI
      Categories Recent Tags ModalAI.com Docs
      © 2026 ModalAI® · Accelerating autonomy for smaller, smarter, safer drones · Powered by NodeBB
      • Login

      • Don't have an account? Register

      • Login or register to search.
      • First post
        Last post
      0
      • Categories
      • Recent
      • Tags
      • Popular
      • Users
      • Groups