I am looking for no contact swith or sensor to drive 6V DC motor. My original plan is to use magnet and reed switch. When magnet moves to very close to reed switch, it will turn reed switch on, and then drive 6V DC motor. However, reed switch I used only can sense the magnet about less 1". Is there more sensitive sensor or switch I can use? Or, how can I build a circuit to sense the magnet far away (above 6") to control 6V DC motor? I only know a little about circuits. I would appreciate any suggestions and advices. Thank you very much
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