Communication distance in the process of use does not meet the ideal requirements, where the problem may occur?

① Obstacles. Due to its physical characteristics, the penetration of 2.4G frequency band is poor. When there are obstacles in linear communication, the communication distance will be greatly shortened.

(2) Interference sources. The interference of temperature, humidity and electromagnetic wave in the same frequency band will increase the packet loss rate of communication.

③ The antenna. The antenna uses 50Ω impedance wiring. If there are metal objects near the antenna or the module is placed in the shield, the signal will be attenuated.

④CE foot. The transmitter is not kept at a high level in the program configuration, resulting in reduced sensitivity when receiving the response signal;

⑤ Transmitting power. When configuring the register, the higher the transmitting power is, the farther the transmitting distance will be.

⑥ Emission rate. If the transmission rate is too high, the transmission distance will be reduced.

⑦ Low voltage. The power supply voltage is less than 3.3V, resulting in insufficient power supply to the module, which relatively affects the transmitting power of the module.

When the module is used, how to deal with it?

① Supply voltage. Ensure that the power supply ranges from 1.8V to 3.6V. If the power supply exceeds 3.6V, the module may be damaged.

(2) Stability. Check the stability of the power supply. The power supply should not fluctuate too much.

(3) Anti-static electricity. Ensure anti-static operation during power installation and use. High-frequency devices are electrostatic sensitive.

2.4G module selection table: