- NM10 BLE Module or Clone
- NRF51 Module
- Metr Pro Module
These 3 are different kind of Bluetooth modules, each are different, and could provide different features.
The best one is the metr.pro Bluetooth module check it out here: The Definitive Guide to Metr App / Metr Pro
The other 2 modules are just regular Bluetooth modules, but I believe nrf51 is better (Someone confirms me on this)
- VESC (this one is self-explanatory) (This is the ESC)