Hello,
The Pololu Zumo chassis is great for any custom sumo robot build.
This one features the chassis, blade, reflectance sensors, 1:75 motors, optical encoders with special signal processing, nRF24L01+, Bluetooth, laser sensors and MP3 sounds under a Darth Vader costume:
![](https://forum.pololu.com/uploads/default/original/2X/8/803488c2285b9d06d9b214e8c23b5d5c23958b67.png)
![](https://forum.pololu.com/uploads/default/original/2X/f/ff92cb539559f30cfd97fa6ba48cf563e774f6ac.png)
![](https://forum.pololu.com/uploads/default/original/2X/2/2d2ecc03c1276cd5faba59624e59d8472eb17d85.png)
More technical details: http://mcuoneclipse.com/2014/12/23/darth-vader-santa-claus-sumo-bot/
Happy Vadering
Erich