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Marken:Aukru, Neuftech, AZDelivery, DSD TECH, SODIAL(R), TOOGOO, Ecloud Shop, Aihasd, HER, HALJIA, MissBirdler, MagiDeal, ILS, MTS1EU, Sharplace, WINGONEER®, Easy Provider, Produktgruppen: CE, Computer & ZubehörProduktarten: ElektronikFeatures: TXD: the sending end , generally expressed as their transmitter, normal communication must be connected to RXD another device ., RXD: the receiving end, generally expressed as their receiving end, the normal communication TXD must be connected to another device. Itself when normal communication TXD RXD devices connected forever !, Collected spontaneously : RXD when normal communication to other devices connected TXD, so if you want to receive data transmitted by its own name suggests , it is their own to receive data transmitted , which is directly connected to its own TXD RXD, used to send and receive test itself is normal, is the quickest and easiest test method, when a problem first do the test to determine whether a product failure. Also known as the loopback test ., 1. the core module using the HC-06, interface includes VCC, GND,TXD,RXD, aside LED status output pin, the microcontroller can be connected via Bluetooth to determine whether the pin state, KEY pin of the slave invalid 2. led indicate Bluetooth connection status, flashes to indicate there is no Bluetooth connection, Steady Bluetooth port is connected and turned on 3.bottom 3.3V LDO, the input voltage 3.6~6V, when unpaired current of 30mA, the pairing of 10mA, the input voltage must not exceed 7V!, 4.the interface level is 3.3V, you can directly connect a variety of SCM(51, AVR, PIC, ARM,MSP430 etc. ),5V microcontroller can also be connected, not through without MAX232! 5.open to 10m effective distance of over 10m are possible, but don't make this connection to ensure the quality of distance 6. after the pair when using full-duplex serial port,without having to know any Bluetooth protocol, but only supports 8 data bits, 1 stop bit, no parity communication format,not support other formats., TXD: der Sendeseite, in der Regel als Sender ausgedrückt, muss die normale Kommunikation verbunden werden, zu anderem Gerät-RXD.