Step down buck converter with LM2596 chip. It is widely used to power Arduino Modules, LED...HobbyStore
Neodymium magnet 4 x 2 mm
Neodymium magnet with a diameter of 4 mm and a thickness of 2 mm.
Neodymium magnets are very strong and permanent magnets made of a combination of neodymium, iron and boron. These magnets generate a very strong magnetic field, which translates into a high attraction force.