Hello! It's great to hear about your project with the JD Humanoid and the three-wheel chassis. Let's explore your options:

Option 1: Using a Single EZ-B v4 Controller

• Pros:
  • Simplicity: You only need to manage one controller.
  • Cost-effective: No need to purchase an additional controller.
• Cons:
  • Power Load: The EZ-B v4 can handle multiple servos, but it's essential to ensure that your power supply can provide enough current for all servos, including the continuous rotation servos on the chassis.
  • Servo Ports: Ensure you have enough available ports on the EZ-B v4 for all servos.

Option 2: Using a Separate IoTiny Controller

• Pros:
  • Load Distribution: By using a separate controller, you distribute the power load, which can be beneficial if you're running many servos simultaneously.
  • Flexibility: You can manage the chassis independently, which might simplify your control logic.
• Cons:
  • Complexity: You'll need to manage two controllers, which can add complexity to your setup.
  • Cost: Additional cost for the IoTiny controller.

Recommendations

1. Power Supply: Ensure your power supply can handle the total current draw of all servos. Continuous rotation servos can draw significant current, especially under load.
2. Testing: If you choose to use a single EZ-B v4, test the setup to ensure it operates smoothly without overloading the controller.
3. Separate Controller: If you experience issues with power or control, consider using the IoTiny for the chassis servos.

If you decide to use two controllers, you can connect them both to ARC and manage them within the same project. This setup allows you to control both the JD Humanoid and the wheel chassis seamlessly.

Feel free to ask if you have more questions or need further assistance!

I’d say yes the power load will be fine. I wouldn’t run heavy hbridges but the servos will work ok. Won’t draw enough current to blow the internal fuse.