Evaluation Board with the STM32 microcontrolers like NUCLEU, DISCOVERY etc. from STMicroelectronics
USB Converter A - RS232 TTL UART output 5V 3.3V The USB-RS232 TTL module works with 3.3 and 5V devices. The converter finds its application in places where serial port is used for communication, namely: GPS, GSM, Arduino circuits, routers, decoders. The converter is also used for programming Arduino mini microcontrollers.
The adapter for connecting the WiFi ESP8266 network module directly to USB, which gives us the ability to program and send data directly from the computer.