GPS Racer: worklog #4

Yesterday I finally maidened my GPS Racer in full FPV configuration. RunCam Owl Plus and VTX finally arrived, it was not raining, so I took recording gear after sunset and went flying.

To be precise, it was not "night". But it was pretty dark. Too dark for my RunCam Swift. Owl Plus was sensitive enough to fly. It was not perfect, but doable. Next step: not IR blocked lens and IR emitter for real night flying. Both have been ordered.

Plus, thanks to GPS and OSD I finally saw the speed this thing can do. 92km/h recorded, but that was not the limit on those 6030 props. I do not think I've opened throttle to max…

Read More

DIY brushless motor kit – first failure

Just like it was expected, my first attempt to wind a brushless motor (12N14P) was a failure. Probable cause: short circuit between phases and my creation released magic smoke.

Then I tried for a second time, and failed again. This time less, no smoke, but motor overheats and does not want to start most of the time. I suspect this can be an ESC problem (Emax 30A) that is configured for DampedLight. Perhaps motor is rotation too fast (no load after all) and ESC tries to slow it down. Hard to tell. Tomorrow I will add a propeller and disable DampedLight. Maybe it will help. I will also try WYE configuration. Right now phases are connected in Delta setup.

Read More

3D Printed Paddleboat

3D Printed Paddle Wheel Boat

It's not a secret, that me, and QuadMeUp, are not only about quadcopters. From time to time I like to do something completely different.

When I was a child (10-12 or something like that) I loved to build boats. Simple crude design: styrofoam or bark, simple sail or DC motor and tinwire propeller. No RC link. Just let it sail in "somewhere there".

When I got a 3D printer and learned that servos can be converted to continuous rotation simply by replacing potentiometer with a pair of resistors, the idea to build paddle wheel boat powered by servos was almost obvious.

So, here it is!

3d printed paddle wheel boat

  • Hull can be 3D printed, STL files are available on Thingiverse
  • Wheels are powered by 2 TowerPro 9g servos converted to continuous rotation
  • RC link by cheapest FrSky compatible D8 receiver
  • 2S LiPo gives enough "juice" and with power usage of about 300mA it can sail for hours

Read More

Mechanical Bat: Bat Bot B2

Nature gave ability to fly to birds, insects and some mammals quite some time ago. We, as a species, learned how to fly only very recently. And let's be honest here. We are not very good at it. We need machines to fly. Any our machines are not very efficient at that task. They require huge amounts of energy to do it, need maintenance and make a lot of noise. Look at birds and bats. They fly for longer using less energy. And they do it with grace.

This is project that caught my attention only today: mechanical bat from University of Illinois called Bat Bot B2.


Bat Bot, from Caltech von PopSci

Take a look at that video. Maybe it's not stable or capable of longer flights yet, but I'm really, really impressed. One day I would really like to have an UAV like that!

Via Hackaday

Read More

Relaxing Winter FPV Session

Winter is not the best time for FPV. Day is short, it is cold, it snows or rains most of the time. But sometimes, when sun is shining, there is a slim window ofopportunity to just go outside and fly. You will get cold, batteries will last shorter, but it will be worth it.

Some people will say it is boring. For me it's not boring. It's 100% relaxing…

Read More