Chengdu Ebyte Electronic Technology Co., Ltd
E01-2G4M20S1B User Manual
Copyright ©2012–2019
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Chengdu Ebyte Electronic Technology Co., Ltd
6-6
latest nRF24L01P datasheet for the register read and write operations.
IRQ is an interrupt pin. It is used to wake up the microcontroller and achieve fast response; users can leave it
unconnected and use SPI to query the interrupt status (not recommended, not conducive to overall power
consumption, low efficiency)
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CE can be connected to high level for a long time, but the module must be set to POWER DOWN power-down
mode when writing to the register. It is recommended that CE be controlled by MCU pin.
5. Basic application
5.1 Basic circuit diagram
6. FAQ
6.1 Communication range is too short
The communication distance will be affected when obstacle exists.
Data lose rate will be affected by temperature, humidity and co-channel interference.
The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
The signal will be affected when the antenna is near metal object or put in a metal case.
Power register was set incorrectly, air data rate is set as too high (the higher the air data rate, the shorter the
distance).
The power supply low voltage under room temperature is lower than 2.5V, the lower the voltage, the lower the
transmitting power.
Due to antenna quality or poor matching between antenna and module.
