NRF24L01 + 2.4G wireless module
NRF24L01 + is a world in general 2.4-2.5GHz ISM band monolithic transceiver chip , a wireless transceiver comprising: a frequency generator mode controller Enhanced SchockBurstTM amplifier transistor amplifier output power modulator demodulator channel selection and protocol settings can be set very low current consumption through the SPI interface , the transmit power when working in the transmit mode when less current consumption is 9.0mA 6dBm accepted mode for the next power-down mode and standby mode 12.3mA current consumption patterns.
Ball Open ISM band , the maximum transmit power 0dBm , license-free use . Open 100 meters !
Six channels support data reception
1. low operating voltage : 1.9 ~ 3.6V low voltage operation
2. a high rate : 2Mbps, because the air transmission time is very short, greatly reducing the wireless transmission of collisions ( 1Mbps or 2Mbps software setting air transmission rate )
3 multi-frequency : 125 frequency points , multi-point communications and frequency hopping to meet communication needs
4 .ultra-small : Built- 2.4GHz antenna , compact , 15x29mm ( including antenna )
5 .Low power consumption : When working in answer mode of communication , air transport and fast start-up time , which greatly reduces the current consumption.
6. low application cost :. NRF24L01 + integrates all RF protocols related to the high-speed signal processing section , such as: automatic retransmission of lost packets and automatically generate response signals , NRF24L01 SPI interface can use microcontroller hardware SPI port connection or MCU I / O ports to simulate internal FIFO can be used with a variety of high and low speed microprocessor interface , easy to use low-cost microcontroller .
7. to facilitate the development : Since the link layer is completely integrated in the module is very easy to develop . Automatic retransmission function, automatic detection and retransmission of lost packets , retransmission times and the number of retransmissions can be software controlled automatically stores the data packet is not received response signal auto answer , after receiving valid data , the module automatically sends a reply signal , without further programming carrier Detect - fixed frequency detection built-in hardware CRC error detection and multipoint communication address control packet transmission error counter and hopping carrier detection function can be used to set the same time can be set to receive six-way channel address can be selective the open standard pin Dip2.54MM receive channel spacing interfaces for embedded applications
