BN180 GPS Module can show your speed. When you use it for , there is no driver needed. Here is connection with RPi, red to 3.3v, black to gnd, green to txd, white to rxdWhen you up bn 180 GPS module the first time in a new location, it always takes longer to find satillites. This is referred to as "cold start". Once you've done it the first time, later when you restart bn180 GPS module, it will get a lock much faster.Data Level : TTL or -232,Default TTL level. To make it be RS232 output, you need to use one TTL to RS232 converter cableColor as shownMaterial: PC+MetalPackage Contents:1 x BN180 GPS Module3 x CableOnly the above package content, other products are not included.Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.