Few hours ago official release of iNav 1.1 has been published. Comparing to few month old version 1.0, there were many changes, including few very very important. In my personal order of importance they are: Default settings for Position Hold and Return To Home has been retuned, so they behave almost perfectly. Take a look…

LiPo battery, as the heaviest single element of any racer quadcopter, is mostly the first one to fell off during crash. Or displace in high-g maneuvers. Or simple fell off in flight. Like on this picture below I’ve found on Reddit. Grrrr… for sure this is something I would like not to see personally again.…

It is still too early to decide if new Turnigy Graphene are worth the money, but after 3 flying weekends with them I do have some thoughts about them already. They discharge differently than Turnigy Nano-Tech I’m using in parallel. Discharge curve seems to be flatter Voltage drop on high load is much smaller comparing…

This video was taken few weeks ago during my tests of Waypoint Mission implemented in iNav. Hardware setup: Transporter Q7.6 600mm quadcopter frame SPRacingF3 Acro with BMP085 external barometer Beitian BN-880 (ublox Neo-M8M) 10×4.5″ APC props EMAX GT2218/08 1100KV motors 5000mAh 3S battery Software setup: iNav pre 1.1 Default navigation PIDs Slightly tuned FP-PID, quite…

This video was taken last weekend during tests of latest changes implemented in iNav, as well as new GPS module Beitian BN-880 I shortly described here.Mission plan: Take off in Angle mode, Engage 3D Position Hold Fly away 100m Return to Position Hold Engage Return To Home mode Summary: Beitian BN-880 performed well. Quadcopter returned…

One of the values that describe LiPo batteries used in RC crafts is so called C rating. For example: 3S 1300mAh 45-90C. Or 3S 5000mAh 25-30C. Or 4S 1300mAh 65-95C. S is simple, it tells the voltage. mAh or Ah tell capacity. But what about C rate? According to Wikipedia is can be described as:…

Looking for a decent replacement for my u-blox NEO-6M GPS modules I came by super cheap, Chinese, Beitian BN-880 modules from Banggood. According to information found in the internet, it’s build based on u-blox Neo-M8N and is capable of receiving signals from GPS, GLONASS, Galileo, BeiDou, QZSS and SBAS. Plus integrated magnetometer module. Yesterday package…

New release of iNav is at the doors. Today I took testing version for a spin and tried few navigation scenarios. For example, transition for Position Hold to Return To Home with landing. It looked like this: It behaved fantastically: nice accuracy, precise landing. There were few wobbles on descend, but that was caused not…

Some time ago I have written a tutorial how to setup Bluetooth based telemetry link between Cleanflight and PC or smartphone. It’s simple and it works. But it has some disadvantages. For example, connection is very very slow and has a limited range: up to 10 meters. While it is enough to change PIDs before…