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HC-12 433MHz RF serial module range test
As I mentioned in my first post about HC-12 433MHz radio modules, I’ve put my interest in them for telemetry purposes. While S.Port telemetry I’m using in FrSky Taranis radio might have higher range than HC-12, it is closed environment. Since $10 for a pair of HC-12 is not much, I’ve decided for more open…
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The best way to mount LiPo on a drone: 3M Dual Lock
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.…
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Hands on: RunCam Swift FPV Camera
Life of my previous FPV camera was rather short. RunCam PZ0420M died after a crash only few weeks after purchase. Well, it happens. As my next camera I’ve chosen RunCam Swift for following reasons: I like RunCam, Swift is small and it has double mount! 50 dollars and 4 weeks later it arrived.
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HC-12 433MHz wireless serial communication module configuration
Description HC-12 are cheap 433MHz wireless serial port communication modules with a range up to 1800m in open space. They are SI4463 based. Each costs about $5 when bought from China, and 2 of them can create wireless UART link that can be used, for example, to transfer telemetry data from UAV. Or drive IoT…
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Setting up iNav on 250 class racer
Although iNav (iNavFlight) with advanced GPS and navigation support is best suited for larger, GPS equipped drones, there is absolutely no reason not to use it on something smaller like 250 racer. Why? Well, why not? Basic flight mechanics is the same like in Cleanflight or Betaflight. FP-PID is brand new PID controller, not very…
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Three flying weekends with Turnigy Graphene batteries
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…
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Requested: iNav CLI dump
Because I’ve received few requests to share iNav configuration that allowed performance like showed here and here, below you can find most important parts of my configuration. I’ve removed some parts like AUX, serial configuration, MAG and ACC calibration. They are mostly iNav defaults, no special tweaking was made. I hope this will help.
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iNav: Waypoint Mission
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…
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Improving cheap radio range
Radio range of my first drone, UDI 829A was pretty pathetic. OK, it was (still is, I only have to finally replace motors) pretty indestructible, quite stable and reasonably priced. But effective radio range as quite short. More less 50 meters. Above that limit strange things started to happen. The reason was pretty simple. Just…