BN-880 is suitable for Open source flight controller, not for flight control with SCM | Bn 880 gps module is dual module compass, with and electronic compass IC HMC5883L | Bn 880 gps module has flash to save configuration. So you do not need to reset next time when you use it | DIts data Level is TTL or RS-232, Default TTL level. To make it be RS232 output, you need to use one TTL to RS232 converter cable | When you use it for Raspberry Pi, there is no driver needed but you need to install software