Stm32f1 and stm32subeide programming example - metal touch sensor driver

Metal touch sensor drive

KY-036 The metal touch sensor module adopts KRS13 Darlington NPN The transistor , The signal is controlled by the circuit , The circuit is partially integrated LM393, There are two comparators inside . When touching a bare wire bent over a transistor （ Represented by the base of a transistor ） when , Environmental 50 Hz The signal is injected into a high gain amplifier . The output of the amplifier is connected to the comparator , Then the sinusoidal AC signal is converted into square wave .

This article demonstrates how to STM32CubeIDE Metal touch sensors are used in . The sensor module used this time , When there is touch , Output high level .

1、 Metal touch sensor configuration

Development environment construction 、 System clock configuration 、 Debugging configuration and serial port configuration , Please refer to ：

• STM32F1 And STM32CubeIDE Quick start - Development environment construction
• STM32F1 And STM32CubeIDE Quick start -GPIO Overview and lighting LED
• STM32F1 And STM32CubeIDE Quick start -USART/UART Serial port communication

The sensor configuration is as follows ：