Hi,
I am building a cnc and now I'm looking for proximity sensor. Is there any reason why using npn and not pnp?
thx
Proximity Sensor pnp or npn
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Posts not related to the Buildbotic CNC Controller are likely to be moved or deleted.
Re: Proximity Sensor pnp or npn
The limit switch outputs connect directly the AVR microprocessor outputs. You can use any type of proximity sensor that you want as long as it never connects the output from the BB Controller to more than 3.3 Volts or less than 0 Volts.