To make a magnetometer you need:
-Two transistors BC 547
-capacitors 3,3 nF and 2,2 nF and 10nF
-resistors 6,8 kΩ and 10kΩ and 220kΩ
Mielec, 6 th September 2017
Magnetometer- Do It
Yourself
-an integrated circuit LM 386
- a capacitor 10mF
-a loudspeaker
-a battery 9V
-a copper wire 3mm
-a card board and a plastic cup
-a glue tube
-a soldering iron
-a switch