Hello,
Ive been reading this forum for long but I couldnt get to find something similar to what I am about to propose
Through GPIO of an MCU I want to give o not give GND (lets say reference of low signal of the general circuit) to a pad.
The way I do it without the MCU is just a physical switch, while pushing connects to GND, without activating the switch the pad would be floating, not connected to anything.
I want to do the same but with an GPIO of the MCU and I thought about doing with a NPN transistor but I dont know if there is a better way as far as there wont be any current flowing through the transister when giving a high signal to the base. As I said before GND will be just a reference to the pad, it will not be powering anything
Regards,
Ive been reading this forum for long but I couldnt get to find something similar to what I am about to propose
Through GPIO of an MCU I want to give o not give GND (lets say reference of low signal of the general circuit) to a pad.
The way I do it without the MCU is just a physical switch, while pushing connects to GND, without activating the switch the pad would be floating, not connected to anything.
I want to do the same but with an GPIO of the MCU and I thought about doing with a NPN transistor but I dont know if there is a better way as far as there wont be any current flowing through the transister when giving a high signal to the base. As I said before GND will be just a reference to the pad, it will not be powering anything
Regards,