I really appreciate your commitment to iterating on this design. Most youtubers tend to stop at proof of concept and move on to the next thing that will generate views, but you truly seem to do it for the knowledge and it shows. Thank you for helping push the world forward
or a proper engineer would just replace the motor will one designed to go 30000 rpm faster.... therefor not burning the motor because it wasnt designed to go that fast ( beariing fail, locks motor, board overheats, boom meltdown... I find these east indian accents ALL scams, havent seen one honest idead from them.... hence I inform others.
Is he a PhD in organic chemistry and materials science? Nano bots will theoretically have to be organic in nature and derived from repurposing a harmless virus by doing some type of rna programming. Ai isn't as far along as the population thinks either. Fpgas will have a bigger impact than agi.
@@jstro-hobbytech then how about microbots instead? Instead of being in the body it exists on its own in a swarm and when programmed takes on various shapes as a swarm. Like the ones from the big hero 6 movie a few years ago?
Love the description of the iterative development of your projects. Many, many others only describe the final working version of their respective designs. I learn as much -probably more!- from errors/missteps of others; they made the mistakes so we don't have to. And as always, I appreciate the chapter markers! I know it takes some time to set up and they aren't strictly necessary, So just wanted to let you know that we appreciate them! 👍
He was also measuring wrong to get an accurate measure of thrust the motor needs to be mounted to the load cell and measure the thrust pushing against the motor and ya that fan is not anywhere near what you'd want to use for a propeller, it needs longer and less blades and less pitch.
@@AtlasReburdened I guess it depends on what the definition of "successive" would mean for said iteration. I said "successive" as a positively biased way to measure how good(resilience, torque, speed, etc) the next motors will be. From my understanding in the context of logic/code, an iteration isn't always successful, however, it will most likely provide a starting point for the next iteration, and in this case, it will be the knowledge required for a better motor. Anyways forgive me for any typos/mistakes as English is not my native language and it's 4am for me.
I love everything about this video and your concept, EXCEPT the part where you are staring at an object rotating 30k rpms on its radial axis with no safety glasses or face shield, etc. Stay safe my friend. I hope none of your experiments ever "let go" and bring you harm. We need more people like you!
As an Embedded Software Engineer working on a motorcontroller for the E-bike business, I find it really impressive what you managed to get working using the sensorless algorithm. TI has a lot of info on sensorless FOC control using their FAST estimator. Definitely worth looking into! Cheers
i started watching your videos when you where trying to make some jumping flexible pcbs or something like that. i tjought "this guy does not know that much what he's doing" but it was still fun to watch. now i see your motivation has led you to some really interesting outcomes. so many iterations, and so much effort, it ends up paying back. thanks for sharing!
I think you could get more out of your motor by modifying the coils to a fractal design, or stitch them to inner/bottom layers for greater field strength. This is an awesome project. I wish I had your lab and sponsorship to get this done. I do work for a motor R&D firm, so I'm not sure how far I could take it without it being an issue with my job. However, if you have EM and/or back EMI questions, I'd be happy to pass them to our science team. We have some of the best magnetic motor designers in the US. Matter of fact, one just got back as a keynote speaker for an automotive EV trade show, and another is currently a presenter at another specifically for motor EM design.
@ohbeardedone9253 It probably could be for micro drones if it were modified. You would need the rotor to be on both sides of the PCB and get the electronics in order.
So, after some digging and research, I've found this small single IC to drive the BLDC motor is very old school tech. I'm wondering if a manufacturer could pick it up and revamp it with a SiCFET output stage. Adding SiCFET discrete FETs might just add bulk. It would be interesting to see what is available, or if a manufacturer would be willing to do a flip chip and wire bond assembly to the PCB on a prototype scale. Running EM sims on the coil stacks, I have found much better configurations than this racetrack approach. While it does work, the magnetic field shape does not interface very well with the PMs in the rotor. I think an increase of 40 to 60 percent in power can be achieved with a coil redesign. I've found a practical use for this in the ant weight class of combat robots. I do have another couple tricks up my sleeve, but I want to see if they are public domain, owned by someone, or something I could patent. This would increase low speed torque and increase maximum top RPM.
The concept of a pcb drone is somewhat terifying when u realise the cost to manufacture an extrodinarily large quantity in combination with drone warefair
This stuff is really so fantastic. I'm just waiting for you to go through another 5 years of this prototyping and then I'll hop on and use these like it's no big deal. Easy! 😉
Wow, this video truly showcases the brilliance of electronics engineering! The precision, innovation, and problem-solving skills displayed here are simply mind-blowing. Keep pushing the boundaries of technology, and thank you for sharing your expertise with us!💡 #ElectronicsEngineering #InnovationAtItsFinest
For drone propellers 2 blades and large diameter helps with efficiency. When you measure the thrust also measure wattage to get the efficiency of the design, and efficiency specifically at the target hover thrust (as thats more important that total thrust).
That super lightweight brushless ESC would be PERFECT for the micro RC plane hobby...theres a few micro ESCs out there now, but they're significantly heavier. Really cool project!!
you are the most impressive channel on this site, you can double the output by putting another magnet propellor on the opposite side of the PCB, double the power
I want to see the PCB sandwiched between 2 rotors. Or… a rotor between 2 PCB’s… etc.. just seems like such a stackable design. Cheers! Thanks for the content!
When I worked at Nidec Motor Corp in their ECM blower motor division, one of the projects we spent a lot of time on was closed loop motor drives using only a single shunt for feedback. You had to play games with the timing to read individual coil states. Definitely a head scratcher.. but it worked.
One more thing: It's possible in your ultimate goal of RPM, that certain designs beat out other designs pure because they were balanced better. Turbo charger compressor and turbine wheels are balanced to the Nth degree because of the insane ~100kRPM goals. They mill off parts of the fasteners and such to get it balanced really well. If you aren't making sure your designs are tested with very precisely balanced assemblies you are pissing into the wind. You could measure magnitudes of inefficiencies purely due to a balance error. Keep that in mind.
You are awesome... I didn't know these things existed in personal labs . You are DAXTOR .. your work is appreciated and might be your work will reach Marc
YOU'RE TELLING ME IT'S BEEN FIVE YEARS SINCE I STARTED FOLLOWING THIS PROJECT!? THATS A DAMN QUARTER OF MY LIFE well god damn. I enjoy watching this project in particular a whole lot. Also flailing LED screen project very nice also if you use plastic propellers with a much bigger diameter that would probably increase thrust a lot. Probably didn't need to mention it but since you didn't, i did.
Can't wait for the PCB Drone, really cool videos man. I love they way you iterate, and make the PCB smaller and smaller. When i'll get good at electronics, i'll try things out x)
I think these would be awesome for 150g battlebot wheels. Mayyybe even 1lb if it could have a lot more torque. The thickness, weight, and solid state design really lend itself to that
What an amazing project and incredible perseverance and engineering skills on your part - looking back on the journey, you’ve made just incredible progress. Congratulations! 👏👏👏
This is one of the coolest projects I've come acrossed. DM if you want some help making the prop portion but it seems like you've pretty much got it handled with a shoulder bolt and bearing.
I can't wait to see what this project evolves into once you've got a few optimized board designs. PCB drones, vehicles, and who knows what else, all able to be shipped with high density because they can sit almost completely flat.
I would love to see one of these integrated into a motherboard with a small radial fan on top. You could have the heatsink line up with this little fan, and make a very compact mini PC concept.
Great motor development Adding larger holes holes near the axis of rotation, inside the magnets on rotor, or larger via on pcb. A flat disk spinning next to the flat pcb should be a nice fluid pump. With no holes, it would tend to make a vaccum near the axis. Lower pressure, lower conduction, less cooling. Adding fresh air to be pumped out by the flat plate pump should improve cooling. Maybe holes next to the bearing hole rotor, so the bearing is supported by pedals created by the cooling holes instead of pressed into a circular hole.
I recognized your accent. Love Malta forever, nicest people, best place ... My second home! Great content, can't beleive the algorythm kept it secret for so long.
Here's a tip you might find useful if you intend to keep using the ADC module on the dsPIC33 devices. The ADC module suffers quite a bit from internal noise and you might read garbage values or be flooded with noise. Software filtering might not cut it either as you'd reduce the bandwith of your measurement signal and waste precious CPU cycles. Solution, right after triggering manual sample, put the CPU to sleep. Also, configure to interrupt and wake up when sample is done. The measurement quality will improve dramatically.
My boss designed an ESC for a motor several years ago. It took him months to tune the algorithm and to make sure it was starting and stopping with different kinds of motors. According to him there were many exceptions at different speeds and he basically bashed his head against a wall for a long time. I designed the PCBs, it was a fun project to work on. A power PCB and a control PCB, each with their own different requirements. EDIT: Since we needed to run only 3 wires to the motor, due to mechanical constraints, we also simulated the mid point with resists. Its a very common and widely used solution. Same goes for the PWM stop to avoid noise.
This man is the only inspiration I get to make me go and study................. So that one day I will be able to design and develop electronic devices................ what school are you at
2 blade propellers are the most efficient propellers for drone or plane purposes. you could try one of the 30-75mm propellers for micro rc planes and see what they can do. One that would fit your needs would be about the size of the one that the powerup 4.0 rc paper airplane kit uses. Would love to see what you can get out of it thrust wise
actually not quite true. Most efficant are one bladed Props (eg. in the AFT 19 evo retracting RC-Glider engine) But they are a nightmare to get working: balancing them is extremly diffilcult and they are loud. Very loud. But if you can handle the torque from the asymetric thrust through the motors bearings and want to squeeze every little percent of efficeny out of the setup, go with one-bladed props.
Great. Fantastic level of development. I suggest that you work with this precise motor positioning technique now. At that same level of development, I think you have a lot to teach us.
I was amazed at how low you brought the thermals down. Great work! I've always been fascinated by PCB motors, and thought they would tak over the industry one day. Even with the development of today's insanely capable PWM controllers, it's hard to overcome simple thermodynamics. While it's possible to make small, lightweight motors witn impressive burst power output... their loaded duty cycle leaves much to be desired. I had a dream once, that I'd built a PCBM powered motorcycle, and was ripping my hair out trying to develop a variable transmission for it. What I eventually came up with, was a dual motor input planetary drive, similar to Toyota's hybrid system, but with only one planetary. I was rudely awakened just before I got to straddle the bike for test ride 🤬🤣 Anywho... best wishes to all you tinkerers!
This gets more impressive every video, i still find it amazing that a motor can be this flat, imagine the possibilities for phone and laptop cooling
Especially if he uses a tiny toroidal fan. It should decrease sound and weigh less while giving roughly the same amount of thrust
Airjets is where it's at!
We already have AIO static coolers from Frore systems
@@rkan2took my words😂
@@AutodidactEngineer those are expensive and proprietary
I really appreciate your commitment to iterating on this design. Most youtubers tend to stop at proof of concept and move on to the next thing that will generate views, but you truly seem to do it for the knowledge and it shows. Thank you for helping push the world forward
Good on you for pointing it out. This guy is certainly not afraid to try things and learn. I appreciate that a lot.
or a proper engineer would just replace the motor will one designed to go 30000 rpm faster.... therefor not burning the motor because it wasnt designed to go that fast ( beariing fail, locks motor, board overheats, boom meltdown...
I find these east indian accents ALL scams, havent seen one honest idead from them.... hence I inform others.
'Carl, show your work.' 'OK,' and talks for thirteen minutes, editing out all the inhales.
10 years on and he'll be making nanobots
Let him cook 🗿
One can hope he makes the design public XD
No his robots will be doing that 😦 skynet springs to mind
Is he a PhD in organic chemistry and materials science? Nano bots will theoretically have to be organic in nature and derived from repurposing a harmless virus by doing some type of rna programming. Ai isn't as far along as the population thinks either. Fpgas will have a bigger impact than agi.
@@jstro-hobbytech then how about microbots instead? Instead of being in the body it exists on its own in a swarm and when programmed takes on various shapes as a swarm. Like the ones from the big hero 6 movie a few years ago?
I am impressed how well you explained brushless motors in the beginning! Great work!
Love the description of the iterative development of your projects. Many, many others only describe the final working version of their respective designs. I learn as much -probably more!- from errors/missteps of others; they made the mistakes so we don't have to.
And as always, I appreciate the chapter markers! I know it takes some time to set up and they aren't strictly necessary, So just wanted to let you know that we appreciate them! 👍
Super cool! Your 5 g lift measurement is fairly conservative too, as that fan you tested looks very simple and not optimized for this application.
He was also measuring wrong to get an accurate measure of thrust the motor needs to be mounted to the load cell and measure the thrust pushing against the motor and ya that fan is not anywhere near what you'd want to use for a propeller, it needs longer and less blades and less pitch.
I can't wait to see how successive the subsequent iterations will be. Great job!
Isn't every iteration of anything 100% successive?
@@AtlasReburdened I guess it depends on what the definition of "successive" would mean for said iteration.
I said "successive" as a positively biased way to measure how good(resilience, torque, speed, etc) the next motors will be.
From my understanding in the context of logic/code, an iteration isn't always successful, however, it will most likely provide a starting point for the next iteration, and in this case, it will be the knowledge required for a better motor.
Anyways forgive me for any typos/mistakes as English is not my native language and it's 4am for me.
I love everything about this video and your concept, EXCEPT the part where you are staring at an object rotating 30k rpms on its radial axis with no safety glasses or face shield, etc.
Stay safe my friend.
I hope none of your experiments ever "let go" and bring you harm. We need more people like you!
You have put a lot of work into this buddy.... kudos for your success and keep working hard we love it!!
As an Embedded Software Engineer working on a motorcontroller for the E-bike business, I find it really impressive what you managed to get working using the sensorless algorithm. TI has a lot of info on sensorless FOC control using their FAST estimator. Definitely worth looking into! Cheers
i started watching your videos when you where trying to make some jumping flexible pcbs or something like that. i tjought "this guy does not know that much what he's doing" but it was still fun to watch. now i see your motivation has led you to some really interesting outcomes. so many iterations, and so much effort, it ends up paying back. thanks for sharing!
Unreal. This is brilliant work. I'm loving these updates. Keep it up!
I remember seeing one of your first videos and being impressed but wow the improvement!
Amazing, several talents at once 👏👏
I think you could get more out of your motor by modifying the coils to a fractal design, or stitch them to inner/bottom layers for greater field strength. This is an awesome project. I wish I had your lab and sponsorship to get this done. I do work for a motor R&D firm, so I'm not sure how far I could take it without it being an issue with my job. However, if you have EM and/or back EMI questions, I'd be happy to pass them to our science team. We have some of the best magnetic motor designers in the US. Matter of fact, one just got back as a keynote speaker for an automotive EV trade show, and another is currently a presenter at another specifically for motor EM design.
Can this compete for power to weight ratio of current drone motors?
@ohbeardedone9253 It probably could be for micro drones if it were modified. You would need the rotor to be on both sides of the PCB and get the electronics in order.
So, after some digging and research, I've found this small single IC to drive the BLDC motor is very old school tech. I'm wondering if a manufacturer could pick it up and revamp it with a SiCFET output stage. Adding SiCFET discrete FETs might just add bulk. It would be interesting to see what is available, or if a manufacturer would be willing to do a flip chip and wire bond assembly to the PCB on a prototype scale.
Running EM sims on the coil stacks, I have found much better configurations than this racetrack approach. While it does work, the magnetic field shape does not interface very well with the PMs in the rotor. I think an increase of 40 to 60 percent in power can be achieved with a coil redesign.
I've found a practical use for this in the ant weight class of combat robots. I do have another couple tricks up my sleeve, but I want to see if they are public domain, owned by someone, or something I could patent. This would increase low speed torque and increase maximum top RPM.
we need to get this man a metal 3d printer
The concept of a pcb drone is somewhat terifying when u realise the cost to manufacture an extrodinarily large quantity in combination with drone warefair
World class research being done by a RUclipsr in public. What a gift.
This stuff is really so fantastic. I'm just waiting for you to go through another 5 years of this prototyping and then I'll hop on and use these like it's no big deal. Easy! 😉
Wow, this video truly showcases the brilliance of electronics engineering! The precision, innovation, and problem-solving skills displayed here are simply mind-blowing. Keep pushing the boundaries of technology, and thank you for sharing your expertise with us!💡 #ElectronicsEngineering #InnovationAtItsFinest
It's insane. even the explanation of how brushless motor works is insane.
Your tenacity is amazing. Nice job Carl.
This channek is a gem i’m telling you. Great work man!
You are a one-man army! What corporate often fails to do in a year you get it done in weeks.
kudos, Bugeja
These videos are so cool!
PCB drone sounds cool
Your videos are GOLD! Very very informative, entertaining, and innovative. Amazing.
Humanity needs way more people like this guy! Awesome RnD! Getting better all the time!
I want to point out that there HAS to be some dude at PCB way who sees your orders and thinks, "Oh, it's THIS guy again."
😄rightt
This is the point where I have been convinced that the motor is actually useful and not just a novelty. Very good work!
I hope your hard labour, meticulous work and solid work ethic make you very rich some day. You deserve success
For drone propellers 2 blades and large diameter helps with efficiency. When you measure the thrust also measure wattage to get the efficiency of the design, and efficiency specifically at the target hover thrust (as thats more important that total thrust).
That super lightweight brushless ESC would be PERFECT for the micro RC plane hobby...theres a few micro ESCs out there now, but they're significantly heavier. Really cool project!!
This is INSANE, Carl!
you are the most impressive channel on this site, you can double the output by putting another magnet propellor on the opposite side of the PCB, double the power
PCB motor drone would be nice!!
So cool, can't wait for the pcb drone
Thanks for bringing us into your lab all the time. That merry go round analogy is genius.
I want to see the PCB sandwiched between 2 rotors. Or… a rotor between 2 PCB’s… etc.. just seems like such a stackable design. Cheers! Thanks for the content!
When I worked at Nidec Motor Corp in their ECM blower motor division, one of the projects we spent a lot of time on was closed loop motor drives using only a single shunt for feedback. You had to play games with the timing to read individual coil states. Definitely a head scratcher.. but it worked.
Very, very impressive performance from those tiny coils!
Loved to see the incredible progress you have made on the PCB motor over the years!
Such a cool video. I can appreciate the amount of work that goes into each iteration of your board.
I'm just happy to see it's centered properly.
You are a modern sorcerer! Well done!
One more thing: It's possible in your ultimate goal of RPM, that certain designs beat out other designs pure because they were balanced better. Turbo charger compressor and turbine wheels are balanced to the Nth degree because of the insane ~100kRPM goals. They mill off parts of the fasteners and such to get it balanced really well. If you aren't making sure your designs are tested with very precisely balanced assemblies you are pissing into the wind. You could measure magnitudes of inefficiencies purely due to a balance error. Keep that in mind.
You are awesome... I didn't know these things existed in personal labs . You are DAXTOR .. your work is appreciated and might be your work will reach Marc
YOU'RE TELLING ME IT'S BEEN FIVE YEARS SINCE I STARTED FOLLOWING THIS PROJECT!? THATS A DAMN QUARTER OF MY LIFE
well god damn. I enjoy watching this project in particular a whole lot. Also flailing LED screen project very nice
also if you use plastic propellers with a much bigger diameter that would probably increase thrust a lot. Probably didn't need to mention it but since you didn't, i did.
Incredible progress on the PCB motor keep up the amazing work.
Can't wait for the PCB Drone, really cool videos man. I love they way you iterate, and make the PCB smaller and smaller. When i'll get good at electronics, i'll try things out x)
What a cool project!
I love the possibilities of this.
This is so far above my head but I love watching this. Thank you for sharing your genius 🙏🏽
Very good idea
I think these would be awesome for 150g battlebot wheels. Mayyybe even 1lb if it could have a lot more torque. The thickness, weight, and solid state design really lend itself to that
Well done man. I admire your dedication
Great Video! I loved the shots you got too! Really cool micro shots racking your focus like that. Super engaging visually
👏🎬
this is getting better nd better!!! i cant wait to see the next iteration!!
The fact that youtubers are the ones Innovating technology nowadays is insane
What an amazing project and incredible perseverance and engineering skills on your part - looking back on the journey, you’ve made just incredible progress. Congratulations! 👏👏👏
This is one of the coolest projects I've come acrossed. DM if you want some help making the prop portion but it seems like you've pretty much got it handled with a shoulder bolt and bearing.
great progress. I love watching it develop like this
I can't wait to see what this project evolves into once you've got a few optimized board designs. PCB drones, vehicles, and who knows what else, all able to be shipped with high density because they can sit almost completely flat.
Very nice production quality of the video!
You have the same energy as alex french guy but with electronics and I love it
I love this series so much, it's a shame they take so much work but the result is worth it.>
I want to believe in the pcb drone 🙏
It's maturing so nicely!
I would love to see one of these integrated into a motherboard with a small radial fan on top. You could have the heatsink line up with this little fan, and make a very compact mini PC concept.
Absolutely magnificent! Thank you very much for sharing such awesome project. Please continue for good!
Wow thanks for sharing your design process!! So inspirational and great to learn!
This videos is very nice sir
Good job Carl!
Great motor development
Adding larger holes holes near the axis of rotation, inside the magnets on rotor, or larger via on pcb. A flat disk spinning next to the flat pcb should be a nice fluid pump. With no holes, it would tend to make a vaccum near the axis. Lower pressure, lower conduction, less cooling. Adding fresh air to be pumped out by the flat plate pump should improve cooling. Maybe holes next to the bearing hole rotor, so the bearing is supported by pedals created by the cooling holes instead of pressed into a circular hole.
Just found this video and channel, Dude you are amazing with what your creations. Good details and knowledge Well done man
I recognized your accent. Love Malta forever, nicest people, best place ... My second home!
Great content, can't beleive the algorythm kept it secret for so long.
YOU ARE SUCH A COOL DUDE!!!!! YOUR WISDOM - CONFIDENCE --- THE WAY YOU SPEAK --- EVERYTHING ABOUT YOU IS WONDERFUL --- I WSIH YOU ALL THE BEST!!!
Awesome! Keep them coming!
Here's a tip you might find useful if you intend to keep using the ADC module on the dsPIC33 devices. The ADC module suffers quite a bit from internal noise and you might read garbage values or be flooded with noise. Software filtering might not cut it either as you'd reduce the bandwith of your measurement signal and waste precious CPU cycles. Solution, right after triggering manual sample, put the CPU to sleep. Also, configure to interrupt and wake up when sample is done. The measurement quality will improve dramatically.
You have done so much for your age and to the RUclips community!! Infinitely indebted!!!
always loved the pcb motor, pretty amazing stuff
Sooo cool! You're SOOOOOOOOOOO close!!!
My boss designed an ESC for a motor several years ago. It took him months to tune the algorithm and to make sure it was starting and stopping with different kinds of motors. According to him there were many exceptions at different speeds and he basically bashed his head against a wall for a long time.
I designed the PCBs, it was a fun project to work on. A power PCB and a control PCB, each with their own different requirements.
EDIT: Since we needed to run only 3 wires to the motor, due to mechanical constraints, we also simulated the mid point with resists. Its a very common and widely used solution. Same goes for the PWM stop to avoid noise.
wow this video is incredibly detailed
❤ wow , this one video had so much information in it , it is worth my watchtime. good luck 👍 for your future ones.
Wow, an incredible amazin project! Thanks a lot for share
Great video
I impress with your hardwork bro, keep it up 👍
This man is the only inspiration I get to make me go and study................. So that one day I will be able to design and develop electronic devices................ what school are you at
Super sir
2 blade propellers are the most efficient propellers for drone or plane purposes. you could try one of the 30-75mm propellers for micro rc planes and see what they can do. One that would fit your needs would be about the size of the one that the powerup 4.0 rc paper airplane kit uses. Would love to see what you can get out of it thrust wise
actually not quite true. Most efficant are one bladed Props (eg. in the AFT 19 evo retracting RC-Glider engine) But they are a nightmare to get working: balancing them is extremly diffilcult and they are loud. Very loud. But if you can handle the torque from the asymetric thrust through the motors bearings and want to squeeze every little percent of efficeny out of the setup, go with one-bladed props.
@@simonexner6199 actually you are both wrong. The most efficient props are 0-bladed props.
You’re an incredible engineer
PCB drones would be amazing to see! They could be scary light and small
amazing. always admire optimizing efforts.
Turn that high speed into torque with some gearing and bam, tiny rock crawler. Great video, as always Carl, keep up the awesome work. 👍
Mr Carl are you a computer engineer or an embedded system software engineer ?
I admire your skills and creativity !
Thanks! I'm an Electronics design embedded systems engineer
Great. Fantastic level of development.
I suggest that you work with this precise motor positioning technique now. At that same level of development, I think you have a lot to teach us.
Thank you for bringing me along for this journey, this is amazing!
Following you for a long time and shit you do is beyond. Good research and damn your always full of new knowledge. Great work keep up the fiyah!!
Rich. Carl Bugeja ,thank you for sharing 👍
Great work! 😊
I was amazed at how low you brought the thermals down. Great work!
I've always been fascinated by PCB motors, and thought they would tak over the industry one day. Even with the development of today's insanely capable PWM controllers, it's hard to overcome simple thermodynamics. While it's possible to make small, lightweight motors witn impressive burst power output... their loaded duty cycle leaves much to be desired.
I had a dream once, that I'd built a PCBM powered motorcycle, and was ripping my hair out trying to develop a variable transmission for it. What I eventually came up with, was a dual motor input planetary drive, similar to Toyota's hybrid system, but with only one planetary. I was rudely awakened just before I got to straddle the bike for test ride 🤬🤣
Anywho... best wishes to all you tinkerers!