SoaringE -Serial TTL Bluetooth Module Bluetooth Bee Master for Arduino Cutting Tools Unit Material Plastic Working Voltage
SoaringE -Serial TTL Bluetooth Module Bluetooth Bee Master for Arduino Cutting Tools Unit Material Plastic Working VoltageColor Red Brand SoaringE Model E00306 Quantity 1 Piece Material FR4 English Manual Spec No Other Features As we know TX and RX are LVTTL, meaning 3. 3V signals. But this module can directly connect to 5V TTL signals (take Arduino for example) without any problems, and you don't need to worry any damages, it will never happen, it is therefore highly recommended to use transistors to interface with a 5V TTL signal. Specification Bluetooth protocol:
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