Balance Bot

This is an environment for OpenAI Gym where the goal is to train a controller for a two-wheeled balancing robot. The aim is to stay upright as long as possible, and maintain desired speed (by default zero, ie stationary).

To install this environment:

git clone https://github.com/yconst/balance-bot
cd balance-bot
pip install -e .

A basic script for training a Deep-Q agent:

import gym
from baselines import deepq
import balance_bot

def callback(lcl, glb):
    # stop training if reward exceeds 199
    is_solved = lcl['t'] > 100 and sum(lcl['episode_rewards'][-101:-1]) / 100 >= 199
    return is_solved

def main():
    env = gym.make("balancebot-v0")
    model = deepq.models.mlp([16, 12])
    act = deepq.learn(
        env,
        q_func=model,
        lr=1e-3,
        max_timesteps=100000,
        buffer_size=100000,
        exploration_fraction=0.1,
        exploration_final_eps=0.02,
        print_freq=10,
        callback=callback
    )
    print("Saving model to balance.pkl")
    act.save("balance.pkl")

if __name__ == '__main__':
    main()

For more information on how to setup and train a model take a look at this blog post.

Released under MIT License.