c. FY90Q quadro controller and remzibiOSD

FY90Q is quadrocopter controller very simple to connect and use as "+" or "x" quardocopter set .

FY90Q do not use GPS and not use any additional functionality , it is only quadrocopter controller .

Lastly friend of mine send one FY90Q unit to me to check if is possible to receive any data from it .

Well , however manufacturer do not say a word, about that any data controller send and even have any UART port , few minutes with oscilloscope and terminal showed, that after power on FY90Q send data similar to FY21/31 . The only useful data are pitch and roll what we can use for Artificial Horizon visualization on OSD unit . UART pins are the same as in FY30 .

OSD hardware mod is the same as for MWC or FY30 , so only one small wire between T1 pad and any free I/O pin of OSD to made an software RX line.

So for AH on OSD we need to update OSD using firmware placed below of this web side , then connect one wire between FY90Q TX pin and OSD's software RX pin - that all . If FY90Q and OSD are powered from two separate power sources , so we must be sure that GND of both devices is also connected (or GND of those two battery are connected) .

OSD works as usual with GPS connected to his hardware UART port.

Firmware in OSD have followed changes:

- not show MAXIMUM values

- not detect GPS baudrate speed

- OSD's UART is set for 38400 baud rate, as GPS

- when FY90Q is connected AH will show after "Save Home" is done

This firmware use EEPROM (BIN file) for normal OSD , so nothing must be done except changing firmware only .

For better layout setting you can use new .lay file to see AH moving bars , to download please look at a. Additions