Hubsan Official Forum

I have a H109S Advanced Alpha (compass in right rear). I have updated RX and FC firmware to 1.1.26 (Alpha). TX is new H906A from Hubsan with 1.1.16 firmware. Compass cal. seem finicky as I seem to get TBE ("toilet bowl effect") in GPS hover unless calibrating it again a time or two. I'm looking for a compendium of sorts that details the various calibration procedures. I seem to be having some issues and after scouring the web for info, I have obtained several procedures but some don't seem to work properly. I go through mandatory compass calibration at battery connect and I can complete that fine as heading seems correct within a degree or two. I can enter compass calibration by holding left stick down and flicking GPS switch off and on ~10 times. I can also enter what appears to be the same compass calibration if I hold left stick at lower left and flick right stick L&R rapidly (this is procedure that works best for fixing my TBE). I cannot get to Horiz. calibration by holding left stick at lower right and flicking right stick L&R. Is there a definitive guide to *all* the available calibration procedures somewhere? Thanks.

Hello. We have three main kinds of calibrations besides the compass calibration. Tutorials for them are listed below. If you have attempted the Horizontal calibration and find that you can't seem to get it to "work", please post a short video of what you are doing to get into calibration; show us the transmitter screen and sticks clearly.

Back to Basics #3: What is a transmitter stick calibration? https://www.facebook.com/hubsan001/posts/1772384313066584

Back to Basics #12: The underrated Horizontal (Gyro) calibration https://www.facebook.com/hubsan001/videos/1782375565400792/

Back to Basics #13: The not very well known but useful rotational calibration https://www.facebook.com/hubsan001/posts/1783162075322141