finally I finished my DIY GNSS. I would like use It as lap timer in Motorsports. It works 20Hz and should receiver GPS+GLONAS+BeiDou. I tried It yesterday and look like work fine.
I noticed that travel of narrow turns or in small circuit the performas are less stable that in straight line or wide turns.
I would like to comper whit racebox mini or QSTARZ (BL-1000GT). Does someone have an session ?
For example: In the image below there are 2 session on same day but hours difference. The sky was good for both. I thinks in the session "bad" the time of the lap was more fast. Of course the trajectorys were very bad that "good"session
There are imamge: