Oleg Elkin

Many years of experience in real-time embedded software developments for
command/control embedded systems, including project design and coding.

Programming ESP32 SoC (www.espressif.com/en/products/hardware/esp32/overview)
to provide Bluetooth(BLE) functionality to existing host microcontroller (MCU)
through its I2C / UART interface.

Communication with the Internet server via TELIT and QUECTEL cellular modems.
Programming ESP32 SoC (www.espressif.com/en/products/hardware/esp32/overview)
to provide Wi-Fi connectivity to existing host microcontroller (MCU)
through its I2C / UART interface.

Project of paying by credit cards for taxi trip.
Project of paying by contact memory smart card SLE 4442 for taxi trip.
Project of paying by CALYPSO contactless smart card for taxi trip.