FT205 - Surface Mount / Pole Mount Installation

FT205 lightweight wind sensor for drones, UAV, UASThe FT205 is lightweight and robust making it ideal for integration on drones and UAVs. To provide accurate wind measurements, the wind sensor should be mounted away from the wash of the drone rotors. The sensor can be installed on a flat surface or pole mounted. It can also be mounted upside down.

For surface mounting applications a gasket and fasteners are provided.

For pole mounting applications an adaptor kit is provided for a 20mm diameter pole (the pole is not supplied due to varying customer requirements). The kit includes upper and lower mounting bases, gaskets and fasteners.

The FT205 Lightweight wind sensor uses a Molex CLIK-Mate connector and is supplied with a 600mm cable. It can output data via RS422 (full-duplex), RS485 (half-duplex) or UART (full-duplex, 3V and 5V). The communication interface option is programmed at the factory and can be modified using software commands.

The sensor is aligned to the structure using the ‘N’ reference, alternatively the compass can be enabled to reference magnetic North.


FT205 Lightweight wind sensor installation instructions

Mounting to a flat surface


 - FT205 lightweight wind sensor


 - Gasket


 - M3 fasteners







Mounting to a pole


FT205 Lightweight wind sensor pole-mount installation instructions

 - FT205 lightweight wind sensor


 - Gasket


 - M3 fasteners


 - Pole mount top


 - Pole mount base


 - Ø20mm diameter pole









The sensor requires a supply voltage of 6-30 VDC (24V nominal) at a typical 30mA current. Enabling the compass and certain RS422 communication options can increase power consumption.

The sensor uses a Molex CLIK-Mate PCB connector (part 505405-0860) and is supplied with a 600mm cable (part 15135-0806, alternative lengths are available). The cable is keyed for improved orientation.

Connector diagram for FT205 lightweight wind sensor for drones and UAVs.





Buffered UART

Molex Wire Colour




2 6-30 VDC 
3  RS422_A RX (-)  RS485_A (-)  
4  RS422_B RX (+)  RS485_B (+)  
5  RS422_A TX (-)
6  RS422_B TX (+)
8     UART_TX 



Various configuration settings can be programmed at the factory or through software commands. See the manual for more details.


Always keep the sensor’s internal filter enabled. Where the wind sensor is used for control purposes, always use filtered data. The sensor is dispatched with the internal filter enabled by default and set to a filter length of 1.6 seconds.


PC testing of sensors can be performed in RS485 mode using the Acu-Test Pack (part FT050). This includes an RS485-to-USB adaptor to view wind speed and direction in real-time.

Acu-Test Pack FT050 for the FT205 lightweight wind sensor for drones and UAVsWith the Acu-Test cable it is possible to communicate with a command-line terminal program, for example HyperTerminal or TeraTerm. Please note that FT Technologies is not responsible for external content or terminal programs. 

Further details are available in the product manual. Request a manual.

For details on Acu-Test Packs, cables and connectors please refer to Accessories.