HexastormThe prism scanner uses a BrushLess DC (BLDC) motor to spin the rotor.
How stators are winded can be seen in this video from Nide Group.
The BLDC external armature fusing machine is used for spot welding the wire and terminal of the BLDC rotor
I consider to simply buy these stators and pick and placing them on my own PCBs. It would simplify the wiring a lot and allow me to compress the technology further.
You can see the front and back of the motor pcb below. Note, that I use the NCB3111 and these are back in stock.
I managed to find a new supplier so this is no longer an issue.
Copying this PCB in KiCad seems a trivial undertaking.
The back of the PCB can be seen below. The PCB is alluminum to simplify the transfer of heat. If the rotor is spin at too low speeds the board overheats and shuts it self down. A brass standoff seems to be pressed in the board from below and secured with a plastic ring. The hole on the right is for a plastic safety thing to fixate the rotor.
The rotor look as follows. You are looking at the bottom and can see the magnet. You can also "barely" see the six edges of the mirror. Here is video of making a similar DIY electric motor.
Discussions
Become a Hackaday.io Member
Create an account to leave a comment. Already have an account? Log In.
I was actually curious if it would be possible to further simplify the machine by using a PCB motor: https://hackaday.io/project/39494-pcb-motor
It seems like a good candidate because the mass of the prism seems sufficiently low. You might try contacting Carl Bugeja, the one who is working on making PCB motors and seems to have a sponsorship with PCBway if he can help you out.
If it pans out then it could reduce the mechanical complexity of the device (improving consistent results), make it more compact, and reduce costs.
Are you sure? yes | no
in short... yes I think this idea is brilliant. it would really allow me to compress the technology and it can definetely spin the prism, but ... I do see challenges ... will explain this further maybe in subsequent post.. been busy with other things.
Are you sure? yes | no