DIY brushless motor kit – I give up, for now…

Latest update on the topic of DIY motor kit from Banggood (DIY Assemble 2204 2-3S Brushless Motor 0.42*2.8 Copper Wire with Motor Cap Banana Plug): I give up. For now, at least.

In total, I tried to wind this motor 6 times. In every single case it ended in the same way: one of the phases burned. So, it's either me, or this kit. I've verified winding directions and termination schema for at least few times, and if I didn't missed something extremely obvious, I did it in a right way. I even verified winding directions during "unwinding". So I start to suspect, that this motor is either no 12N14P DLRK (not very probable), or it should not be winded with 0.42mm wire. Next week I will order 0.20mm wire and try one more time…

This is a winding schema I used:

dlrk winding schema

Poles goes as follows: AabBCcaABbcC where capital letter is clockwise, while small letter is counter-clockwise.

Phases were connected like this:

  1. A1-C2
  2. B1-C1
  3. A2-B2

Sure, I could have done something wrong. But not 6 times in a row…

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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.

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DIY brushless motor kit…

China is such a magical place… among all those affordable things you can buy there, there are those not so useful, but still affordable things that, for sure, you do not need. Just like DIY Assemble 2204 2-3S Brushless Motor 0.42*2.8 Copper Wire with Motor Cap Banana Plug.

DIY Assemble 2204 2-3S Brushless Motor 0.42*2.8 Copper Wire with Motor Cap Banana Plug

As you can see on a picture above, it is a motor that you have to assemble by yourself. Wind the coils, install bearings, learn the difference between Delta and Star configuration, and so on and so on… Oh, and there is absolutely no manual. So even number of wire turns is a mystery. I suspect something around 10, but who knows.

Tomorrow will be the first attempt to assemble it. I hope magic smoke will not appear…

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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

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3D Printed Faceplate for SkyZone SKY-01 FPV goggles

While SkyZone SKY-01 are pretty good FPV goggles, they are not very comfortable. Instead big faceplate, they only have rubber eyecups. This approach works, but well…

Like always, there is a solution: 3D printed faceplate for SkyZone SKY-01. Thingieverse has at least few different designs, but I’ve chose the one from the link above. They fit right and do not have fan adapter which I do not use.

Foam pads for faceplate are a second problem. In first iteration I just uses gray sponge I had at home and white, dense, closed foam from Emax motors and glued everything together with Uhu Por. Continue reading “3D Printed Faceplate for SkyZone SKY-01 FPV goggles” »

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Tutorial: replace battery in RunCam HD

My RunCam HD died after 5 months in a drawer. Reason: battery destroyed. It had enough energy for approx. 2 seconds of operation. So I had a choice: buy original battery from RunCam for $9.99 plus shipment, or fix it DIY style. I’ve choces the second option.

Luckily for us, RunCam used generic 803035 LiPo 1S, 3,7V battery that can be purchased in specialized stores. I’ve paid around $6 for mine, but if you look hard enough, you should find something even cheaper. Also, luckily (or not) there is a battery plug: 2 pin JST 1.25mm.

Runcam HD inside

Continue reading “Tutorial: replace battery in RunCam HD” »

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Mini Flying Wing: MiniWing v2

Miniquads are fun, right? After all, there is a reasons most uf us flies 210-250 quadcopters. If so, small flying wings should be fun too! I tried that already in late 2015 and failed miserably! My design did not survived maiden flight. Well, things like that happens from time to time, so few months ago, after learning few new things, I’ve made a second attempt. And this time I’ve succeeded.

Continue reading “Mini Flying Wing: MiniWing v2” »

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ESP8266 and DS18B20 – wireless ThingSpeak sensor

Here is another small project of mine: battery operated ESP8266 ESP-01 WiFi thermometer using DS18B20 and ThingSpeak API to collect data.

Before we proceed, you should:

esp8266 ds18b20 thingspeak sensor

Continue reading “ESP8266 and DS18B20 – wireless ThingSpeak sensor” »

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