STM8S Bluetooth Low Energy oscilloscope
Simple and cheap DIY oscilloscope can be done with STM8S103 module and HM-10 Bluetooth Low Energy module using Android smartphone as display. STM8S103 module: JDY-08 BLE module need HM-10 version 709 firmware and set up to 9600 baud UART mode. Firmware can be programmed to with TI CC debugger. https://www.ti.com/lit/ug/swru197h/swru197h.pdf?ts=1736391991950 More info ,how to do: https://www.iot-experiments.com/jdy-08/ Oscilloscope schematic drawn with Kicad: STM8S firmware was developed using ST Microelectronics Visual Studio (Windows) using free license COSMIC compiler and ST Link V2 for program and debug interface. This 1 channel 200 kS / 5 us oscilloscope is battery powered (usb charging). Including following features: - 1 channel 5us ... 5ms period 240 samples - max , min voltage display - AUTO / SINGLE trigger - AC/DC select - LV / HV (high voltage 400V probe needed) attenuator select - sine ...