Upgrade your older Bittle/Bittle X for the robotics arm gripper

The older Bittle/Bittle X models have different hardware configurations. The following table shows what components need to be upgraded for different models to work with Bittle robotic arm gripper extension kit with alloy servos:

• A red color means the part must be upgraded

• A green color means the part can be reused.

• A blue color indicates that the board's wiring and other configurations must be adjusted.

	Current board	Current servos	You need these for the upgrades
Bittle X+Arm	BiBoard V1	Feedback alloy servos	N/A
Bittle Robotics kit	NyBoard	Alloy servos	BiBoard V1
Bittle STEM kit	NyBoard	Lite(plastic) servos	BiBoard V1 + alloy servos(with or without feedback)
Bittle X V1	BiBoard V0	Lite(plastic) servos	Alloy servos(with or without feedback)

The simplest solution is to buy the newest components to match the Bittle X+Arm configuration. We offer discounted combo kits to help you upgrade.

The following instructions will guide you in reconfiguring the BiBoard V0 for the Arm. You must complete all the following steps.

1. BiBoard V0 Re-configuration

The arm's alloy servos require much more current. To bypass the fuse (marked X30 or X70), you must directly solder its two ends.

2. Firmware

You will need to upgrade the firmware via Firmware Uploader with the following option:

Model: Bittle X+Arm

Board: BiBoard V0_* (Select the corresponding option based on the robot's mainboard model)

Mode: Standard

Or via Arduino IDE with the following macro activated:

#define BITTLE
#define BiBoard_V0_*  // Activate the corresponding macro definition statements in the code based on the actual mainboard model the robot uses.
#define ROBOT_ARM

3. Wiring

Please refer to the wiring diagram to attach the robotic arm。

4. Calibration

The robot arm needs to be calibrated to work correctly. Please refer to the corresponding chapter for details.

5. Controller

We have the Micro:Bit controller to provide an intuitive and prompt control for the robot.