Magnetic Stirrer battery/cable powered

A simple magnetic stirrer that can be built to be powered by cable or by battery.

BEFORE YOU BUY WATCH THE ASSEMBLY VIDEO GUIDE:
https://www.youtube.com/watch?v=mhN6_lsr0Jw

PLEASE DO NOT BUY THIS IF YOU DON"T FEEL CONFIDENT THAT YOU CAN BUILD IT

A Couple of Notes: in the video I connected the switch to the positive wire, it's better if you follow the diagrams and connect it to the negative side.

The magnets plate can be pressure fit on the motor shaft or you can glue it.

I'm not an expert especially in electronics so there might be errors in the circuits, if you spot any please let me know. I decline all responsibilities related to injuries or damages derived from you trying to replicate/follow this project.

Part list (affiliate links):

tp4056: https://s.click.aliexpress.com/e/_DkiEmh5
pwm controller(get the red one): https://s.click.aliexpress.com/e/_DdqSLBl
motor: https://s.click.aliexpress.com/e/_DDN3bP5
MT3608: https://s.click.aliexpress.com/e/_DCoP4Nz
3.7V lithium battery :https://s.click.aliexpress.com/e/_Dewk73H
switch : https://s.click.aliexpress.com/e/_DkNHJeT
magnets : https://s.click.aliexpress.com/e/_DnagpFl
diode ( select 1N5817) : https://s.click.aliexpress.com/e/_DCLQodz
resistor (select 10 K): https://s.click.aliexpress.com/e/_DFe14pl
Pmosfet (select IRF4905): https://s.click.aliexpress.com/e/_DFHgJz1
screw(select M3 12 mm Pan head before ordering ): https://s.click.aliexpress.com/e/_DDUkk4j
wires: https://s.click.aliexpress.com/e/_DeBHgxZ
soldering iron: https://s.click.aliexpress.com/e/_DEOeG7p
drill bit (select 3 mm) : https://s.click.aliexpress.com/e/_DD5MAWP

PLA
0.2 mm layer
100% infill

supports needed for the case