BG7KBB That's right! The cost of the magnetic base accounts for a significant portion of the overall expenses.
Here are some potential issues you might encounter:
1. When installing pre-inserted nuts, you need to apply some pressure to insert them. If they don't go in easily, it might be because the pre-inserted nut is too large; replacing it with a standard one usually solves the problem. After testing and confirming that everything works correctly, apply some solder to secure it and prevent loosening. For installing the "eye," simply smooth out the cut on the propeller without excessive grinding.
2. When the 2.54mm wires pass through the holes on the board, they are blocked by the base's magnets. The solution is to use a nylon spacer.
3. The PCB uploaded is a version with re-soldered points on the propeller, which has not been tested in a real board. Please select the appropriate soldering method when soldering.
4. If the propeller blades are not rotating, possible causes include the pre-drilled holes for the screws being too recessed or the screws being tightened too much. Try adding shims. Actual testing has shown that shims are not necessary when the pre-drilled holes are in the correct position.
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