Chapter 4 Faq; Transmission Distance Is Not Ideal; Module Is Easily Damaged; Ber(Bit Error Rate) Is High - Ebyte ESP32-S3-MINI-1 User Manual

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Chapter 4 FAQ

Transmission distance is not ideal

4.1
When there are straight-line communication obstacles, the communication distance will be correspondingly

attenuated;
Temperature, humidity, and co-channel interference will lead to increased communication packet loss rate;
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The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing module near

ground.
Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea
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The signal will be attenuated seriously when there is metal objects near the antenna or module is put in a metal case.

Power register was set incorrectly, air data rate is set too high (the higher the air data rate, the shorter the

transmission distance).
The power supply voltage is lower than the recommended value under room temperature. (the lower the voltage, the

lower the transmitting power.)


4.2 Module is easily damaged

Please check the power supply, ensure it is in right range, voltage higher than max value will damage the module.
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Please check the stability of power supply, the voltage cannot fluctuate too much.

Please ensure anti-static operation during installation and in use, high-frequency devices are sensitive to static

electricity
Please ensure that the humidity during installation and in use should not be too high, some components are sensitive

to humidity.
Please avoid using modules at too high or too low temperature if there is no special requirement.


4.3 BER(Bit Error Rate) is high

There are co-channel signal interference nearby, please be away from interference sources or modify frequency and

channel to avoid interference;
The clock waveform on the UART is not standard, check whether there is interference on the UART line;
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Poor power supply may cause messy code. Make sure that the power supply is reliable.

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ESP32-S3-MINI series user manual
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