Features: The product includes a R3 development board (with 30cm data cable), NRF24L01 wireless module, joystick. R3 is an upgraded development board , in the USB to serial port circuit part, using ATMega16U2 microcontroller. Joystick module is used to simulate keyboard and mouse functions, suitable for use in remote control toys or other DIY projects. The NRF24L01 is a single-chip transceiver chip operating in the 2.4-2.5GHz world-wide ISM band. The wireless transceiver includes: frequency generator enhanced, SchockBurstTM mode controller, power amplifier, crystal amplifier, modulator demodulato. The output power channel selection and protocol settings can be set to very low current consumption via the Serial Peripheral Interface interface. The wireless module has a high speed.Due to the short transmission time in the air, collisions in wireless transmission are greatly reduced. Multi-frequency clock,meet the needs of multi-point communication and frequency hopping communication. When working in response mode communication, fast air transmission and start time greatly reduce the current consumption. NRF24L01 integrates all high-speed signal processing parts related to RF protocol, such as: automatic retransmission of lost data packets and automatic generation of response signals. The Serial Peripheral Interface of NRF24L01 can be connected by hardware Serial Peripheral Interface port of MCU or simulated by MCU I/O port. The internal FIFO can interface with various high and low speed microprocessors, which is convenient for using low-cost single-chip microcomputers. Since the link layer is fully integrated on the module, it is very easy to develop. Automatic retransmission function, automatic detection and retransmission of lost data packets, retransmission time and number of retransmissions can be controlled by software, automatically store the packet automatic response function without receiving the response signal, after receiving valid data, the module automatically sends Response signal, no need to separately program 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 setting, can set six receiving channel address at the same time, Selectively open the receiving channel standard pin Dip2.54MM pitch interface for easy embedded applications. The joystick provides input extensions for rockers and keys are provided. The on-board switch can be switched between 3.3v and 5V, and this module can be used for other 3.3v SCM platforms, such as STM32. Specification: Item Type:Development Board Kit R3 Development Board: Digital I/O:0~13 Analog I/O:0~5 ISP Downloading Function:YES Input Voltage:DC5~9V Computer USB Interface Output Voltage:DC5V DC3.3V Controller:Atmega328 Wireless Module: Voltage:1.9~3.6V Speed:2Mbps Frequency Point:125 Antenna:2.4GHz Size:15 x 29mm / 0.59 x 1.14in Joystick Module: RF Interface:nRF24L01 Interface compatible with Bluetooth for wireless serial communication LCD Interface:5110 Communication Interface:I2C Voltage:3.3V 5V Button:One Cross Joystick with button/Four Circular Buttons/Two Keys Package List: 1 x R3 Development Board 1 x Wireless Module 1 x Joystick 1、The product includes a R3 development board (with 30cm data cable), NRF24L01 wireless module, joystick. 2、R3 is an upgraded development board , in the USB to serial port circuit part, using ATMega16U2 microcontroller. 3、Joystick module is used to simulate keyboard and mouse functions, suitable for use in remote control toys or other DIY projects. 4、The NRF24L01 is a single-chip transceiver chip operating in the 2.4-2.5GHz world-wide ISM band. The wireless transceiver includes: frequency generator enhanced, SchockBurstTM mode controller, power amplifier, crystal amplifier, modulator demodulato. The 5、The wireless module has a high speed.Due to the short transmission time in the air, collisions in wireless transmission are greatly reduced.