BluePill (STM32) BLE oscilloscope
Bluetooth Low Energy wireless interface can be used to transfer measurement data to Android smartphone. My simple digital oscilloscope is done with STM32F103C8T6 Core Board Development Board Bluepill and Bluetooth low energy module HM-10 : Kicad drawn schematic diagram for this bluetooth low energy oscilloscope : Designed also PCB in Kicad and was able to show these 3D images: Kicad project is included in GitHub repository: https://github.com/joukohak/stm32_blescope Repository also includes STM32 CubeIDE project and Android apk. Implemented hardware and 3D printed cover like this: STM32 firmware was developed in Linux Mint PC with STM32 CubeIDE developement application and interface was ST Link V2: Android application was developed with Android Studio. Some screen captures of Android application: Features include: - AUTO triggering - Single trigger - START trigger rising/falling trigger level setting on channel 1 - 2 channel 1000 s...