Okay, let's get this chat started!
A big welcome to @Carl Bugeja for joining us on the chat today to talk about their PCB Motor designs!
Thanks for having me
@Carl Bugeja , kick us off by telling us a little bit about yourself!
So my name is Carl Bugeja. I'm a 23yr old electronics engineer, graduated from uni 2 yrs ago and since then i've been trying to build cool robots
Sounds like the dream to me.
Our first question comes from @Lutetium : Where did the inspiration for your PCB Motor design come from?
I had this drone startup were we were trying to design a very tiny coaxial drone.. we have failed because we were trying to use off-the-shelve parts to integrate it into our drone.. after this i had come up with the brsuhless pcb motor concept were i was aiming to combine the prop, stator and electronics driver into one unit
Haha i guess that answers the question
Hehahe It totally looked like you were the fastest typer on the planet!
this is the drone
Wow, awesome! I see the PCB Motor in there. Any videos of it flying?
doesn't look like it can fly stable with only 2 rotors, e.g. the Tiny Whooper has 4
this was actually before i came up with the idea of the pcb motor.. so this robot has an off-the-shelve brushless motor.. It had four tiny flaps that control the roll and pitch axes but that's were we failed as the flaps were too small to create a strong enough force to move the drone
You just very precisely identified the design problem, so isn't that fixable ?
at that time we had given up.. this robot weight under 30 grams and it was very hard to go lower than that
only one prop? the whole thing must spin like crazy :-)
the duct has a second fan in it
if you look closely
no it has two props rotating in opp direction to control the yaw.. this is the pcb as you can see it is really packed and that dual brushless motor driver in the middle inspired me to try and design the pcb motor
Are pcb motors more efficient than off-the-shelf brushless motors?
the magnetic fields of the 2 solenoids will not interfere when they are so closely packed?
I mean on the PCB dial motor design
my current prototype of the pcb motor is coreless so you cannot actually compare it with the off-the-shelved ones as they have an iron core.. so efficiency-wise it is not but it is much smaller and cheaper to assemble and manufacture
Where has the design of the PCB Motor left this tiny drone project?
And then we'll hop into some more community questions, because we have some juicy ones waiting.
Please show us what a pcb motor looks like and describe how it works...
@Kris Winer here is the project page for the PCB motor: https://hackaday.io/project/39494-pcb-motor
Okay, the next question is by @Jarrett : Ever consider doing a multi-pcb stackup? Or aluminum substrate?
So in this startup drone project, i was not alone.. but i was responsible for the hardware design. After this drone project has ended, i started working alone on the pcb motor which is...
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