Mini Control Board X3 Doubts

❔Questions
10
  1. We have two motor control boards:
X3 X4
3.7V battery 11.1V battery
2 servo channels 3 servo channels
Bluetooth Low Energy Bluetooth Low Energy
Wi-Fi
Arduino programmable

  1. It mostly depends on structure that will be holding a phone. All weight should be supported by joints, and servos are used only to hold and change position. In that case they won’t need a lot of power, only precision.
    5 Volt sevos actually works in range between 3 - 6 Volts. Keep in mind that output torque and speed depends on that. Mostly it’s specified by manufacturer.

  2. X3 included battery is LiPo, 3.7V, 250 mAh. If you need more capacity, you can use 18650 batteries. I have seen holders with JST connector, or entire battery with JST connector. Recommended to use protected batteries only. Just make sure connector polarity is correct.
    image
    In case of X4 - it has more powerful battery that will be plenty.

  3. TLDR - no, we don’t have SDK for your own app.
    Long answer: There was and Arduino library to use with ESP32 processors. It allowed to scan and connect X3 boards and control them. This is a bit outdated at the moment - https://docs.totemmaker.net/remote-control/arduino/
    Also there was one topic to get it working with PlatformIO - VScode -> Platformio -> ESP32 -> Build failed : assembly debendencies?
    There definitely is a plan to work on third party integrations (as I see demand is growing), but can’t estimate when it will be available.
    In case of X4 board - with Arduino you can implement your own communication protocol over Bluetooth Classic, Bluetooth Low Energy or Wi-Fi.

Overall - I would suggest to use X4, because it has more power, bigger battery, programmable and has MEMS (Gyro, Acc) sensor in case you need it.

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