Component List and Assembly Instructions

Before assembling the Rollarm, please first verify that all parts and components have been included. If there are any missing or damaged components, please contact SunFounder immediately at to resolve the issue as soon as possible.

Please follow the steps on the following PDF for assembly instructions:


  • If the Servo is already powered up, do not force the Servo shaft to avoid damaging the Servo.

  • Before assembling, you need to buy 1 9V battery and fully charge them.

  • The Expansion Board cannot charge the battery, so you need to buy a battery charger at the same time.

Self-Provided Components