In the context of COVID vigilence, the current project aims to create a contact-free button to interact with other projects, for example to be used as gamepad for the Pong1D project. It is based on the ST VL53L1X laser long-distance ranging time-of-flight sensor.
STM32F411 nucleo board + VL53L1X-SATEL satellite board + two pull-up resistors
Wire SCL (2), SDA (4), GND (6) and VCC (5) of the satellite board to the corresponding pins of the nucleo board (The I2C used is the one labelled on the board). Do not forget to add pull-up resistors on SDA and SCL.
Outputs:
PA5: 3V3 = touch ; 0V = no touch
PA6: 0V = touch ; OPEN = no touch
This is a platformio projet. To compile and flash: pio run -t upload.
You can install platformio with pip install platformio. Since 2020-08, the
framework is included in platformio, thus there is no additional manipulation
anymore.