I am applying the circuit in the picture I uploaded and when I touch the pin with my hand or touch it with a metal piece, the external break pin is triggered spontaneously. Please help me.
I checked that all VSSA pins of STM32F103C8T6 reach GND. I disconnected H11L1 and connected PA0 pin with a cable directly to 3.3V then GND and the problem persisted.
I am using the STM32F103C8T6 Blue Pill board and I am feeding H11L1 through the 3.3V and GND pins on the board. I am also feeding the board through the 5V pin on the board. I think the ground is OK.
