Hardware Design - Ebyte E22-230T30/33E Manual

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Frequency channel: 0 ~ 83
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Network ID : 0 ~ 255
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Key: 0 ~ 65535
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When using the host computer to configure the relay mode, the user needs to pay special attention. Since the
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parameters in the host computer are in decimal display mode, the module address and network ID need to be
converted to decimal when filling in;
For example, the network ID input by the transmitter A is 02 , and the network ID input by the receiver B is 10 ,
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then when the relay terminal R sets the module address, convert the hexadecimal value 0X020A to the decimal
value 522 and fill it in as the relay terminal R module address;
That is , the module address value that needs to be filled in at the relay end R is 522 at this time .
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10 Hardware Design

It is recommended to use a DC regulated power supply to power the module, the power supply ripple coefficient
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should be as small as possible, and the module must be reliably grounded;
Please pay attention to the correct connection of the positive and negative poles of the power supply, such as reverse
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connection may cause permanent damage to the module;
Please check the power supply to ensure that it is between the recommended power supply voltage, if it exceeds the
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maximum value, it will cause permanent damage to the module;
Please check the stability of the power supply, the voltage cannot fluctuate greatly and frequently;
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When designing the power supply circuit for the module, it is often recommended to reserve more than 30% of the
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margin, and the whole machine is conducive to long-term stable work;
The module should be kept as far away as possible from parts with large electromagnetic interference such as power
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supply, transformer, and high-frequency wiring;
High-frequency digital traces, high-frequency analog traces, and power traces must avoid the bottom of the module.
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If it is really necessary to pass through the bottom of the module, assuming that the module is soldered to the Top
Layer , lay copper on the top layer of the module contact part (all copper ) And good grounding), must be close to
the digital part of the module and routed in the Bottom Layer ;
Assuming that the module is soldered or placed on the Top Layer , it is also wrong to randomly route the wires on
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the Bottom Layer or other layers, which will affect the stray and receiving sensitivity of the module to varying
degrees;
Assuming that there are devices with large electromagnetic interference around the module, which will greatly
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affect the performance of the module, it is recommended to keep away from the module according to the intensity
of the interference. If the situation permits, proper isolation and shielding can be done;
Assuming that there are traces with large electromagnetic interference around the module (high-frequency digital,
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high-frequency analog, power supply traces) will also greatly affect the performance of the module. According to
the intensity of the interference, it is recommended to keep away from the module. If the situation permits, it can be
done Appropriate isolation and shielding;
If the communication line uses a 5V level, a 1k-5.1k resistor must be connected in series (not recommended, there is
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still a risk of damage);
TTL protocols whose physical layer is also 2.4GHz , for example: USB3.0 ;
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The antenna installation structure has a great influence on the performance of the module. Make sure that the
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antenna is exposed and preferably vertically upward;
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