It works at 2.4GHz frequency which makes it legal in almost every country.It helps to send feedback to the transmitter. IRQ is an interrupt pin, which generates the event whenever a new data is available for SPI pins.
It works at 2.4GHz frequency which makes it legal in almost every country.It helps to send feedback to the transmitter. IRQ is an interrupt pin, which generates the event whenever a new data is available for SPI pins.