The Pepper Task Synchroniser Library

SoftBank Robotics Labs is a set of public SBR projects (experimental code snippets, helper libraries, etc.) hosted on GitHub for anybody developing for Pepper and NAO.

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Pepper Task Synchroniser is an Android Library designed to synchronise a task across multiple Pepper robots, or in other words, to execute an action or task simultaneously.

The library relies on a 3rd party solution called Chirp. This product sends encoded ultrasonic sounds from a sender device with a speaker (such as a laptop) and the receiver application (Pepper), which when detected are used to run a task. This solution has several advantages over traditional network based synchronisation methods:

  • The sender and receiver can be both in Airplane mode, the only requirement is a device with a speaker
  • The range of the signal is limited only by the power of the speaker
  • The sound sent is ultrasonic, which means it is undetectable to the human ear
  • The solution is scalable, there is no upper limit to the number of robots that can simultaneously hear the signal
  • Once started, the task can easily be stopped by sending a STOP signal. This is not always the case with network triggered tasks.
Video demo: Pepper Robot - Synchronised Dance - Youtube 1:29

Getting Started

For more details on this project such as prerequisites, usage and testing notes, please go and see the project on Github.