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FT232RL chip TTL/CMOS level;RXD / TXD indicator;USB powered,5V / 3.3V.Arduino Compatible Breakout 5V 3.3V.This is a basic breakout board for the FTDI FT232RL USB to serial IC.
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It's a small USB to TTL serial tool, using the PL2303 chip. You can use it to connect some serial device to your PC via USBB port.
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OdeMCU V3 ESP8266 ESP-12E is WiFi development board that helps you to prototype your IoT product with few Lua script lines, or through Arduino IDE.
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WI-FI Wireless ESP-01 ESP8266 Transceiver Module Compatible With Arduino Projects AI Cloud Inside Wireless TXRX.
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Bluetooth Module(HC-05).It uses serial communication to communicate with devices. It communicates with microcontroller using serial port (USART). HC-05 Bluetooth Module.






