Description: Product Features: This module uses the radio frequency chip SI24R1, which integrates all the high-speed signal processing parts related to the RF protocol. Because the link layer is fully integrated on the module, it is very easy to develop. Automatically detect and automatically retransmit lost data packets. The retransmission time and number of retransmissions can be controlled by software, and automatically store data packets that have not received an answer signal; after receiving valid data, the module automatically sends an answer signal without additional programming; Carrier detection-fixed frequency detection, built-in hardware CRC error detection and point-to-multipoint communication address control packet transmission error counter and carrier detection function can be used for frequency hopping settings can simultaneously set six receive channel address, can selectively open the receive channel . The SPI interface of SI24R1 can be connected with the hardware SPI port of the single-chip microcomputer or simulated with the single-chip I / O port. There is a FIFO inside to interface with various high and low speed microprocessors, which is convenient for the use of low-cost single-chip microcomputers. Product parameters: Onboard 2.4G PCB antenna, ISM frequency band, SMD-8 stamp mouth package, small size, easy for embedded application. Supports six channels of data reception (one pair of six) Support GFSK / FSK and other general modulation methods Support 2Mbps / 1Mbps / 250Kbps data rate, can set different transmit power Multi-frequency point: 126 frequency points, to meet the needs of multi-point communication and frequency hopping communication, 2400MHz ~ 2525MHz, 1MHz frequency hopping step Internally integrated high PSRR LDO Wide power supply voltage range: 1.9 ~ 3.6V, typical 3.3V The average emission current is as low as 25mA (7dBm) Receiving sensitivity: -96dBm @ 250kbps High transmit power: + 7 ± 1dBm Using four-wire SPI interface, the rate can reach 10MHz Internal integrated intelligent ARQ baseband protocol engine Send and receive data hardware interrupt output Support 1bit RSSI output Working temperature: -20 ℃ ~ 85 ℃ The best transmission distance: less than 240 meters (250kbp open environment without shielding and no electromagnetic interference). The reliable distance is recommended to be used within 30% -50%. Precautions: When connecting with the P0 port of the 51 series single-chip microcomputer, a 10K pull-up resistor needs to be added, and it is not necessary to connect with the remaining ports. For other series of MCUs, if it is 5V, please refer to the output current of the IO port of this series of microcontrollers. If it exceeds 10mA, it needs to be divided by a series resistor, otherwise it is easy to burn the module! If it is 3.3V, you can directly connect to the IO port of the nRF24l01 module Wire connection, such as AVR series MCU. The module's SPI rate can best support up to 10M, it is generally recommended to be in the SPI rate of 1M or a few hundred K. The wireless module is a static sensitive device. Please pay attention to static electricity protection when using it, especially in dry winter. Try not to take away the device on the touch module to avoid unnecessary damage. It is recommended to use a DC power supply with low ripple for the wireless module. The working voltage is recommended to work at 3.3V. The ground of the module should be stable and reliable, and the ground wire should be as close as possible to the total ground of the power supply. If a switching power supply is used, the decoupling must be strengthened to prevent the ripple and spikes of the switching power supply from affecting the operating characteristics of the module. The module uses a PCB antenna. This antenna is easily affected by external lines. When using it, please do not walk the line or place components under and around this antenna. It is best to hollow it out if possible. The 2.4G frequency is relatively high, and various materials have a certain impact. The general plastic has little effect. If there is a metal object, it will have a significant impact. At this time, it is recommended to use an SMA feeder to connect an SMA antenna.
Price: 3.67 USD
Location: ShenZhen
End Time: 2023-08-28T15:46:15.000Z
Shipping Cost: 2.59 USD
Product Images
Item Specifics
Restocking Fee: No
Return shipping will be paid by: Buyer
All returns accepted: Returns Accepted
Item must be returned within: 30 Days
Refund will be given as: Money Back
Brand: Unbranded
Type: Wireless Module
Modification Description: Does Not Apply
Bundle Description: Does Not Apply
Custom Bundle: No
Model: NRF24L01
MPN: Does Not Apply
Country/Region of Manufacture: China
Modified Item: No
California Prop 65 Warning: No
