Software Editing; Basic Application; Basic Circuit Diagram; Communication Range Is Too Short - Ebyte E19-433M20S2 User Manual

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4.2 Software editing

SPI communication rate should not be set too high, usually around 1Mbps.
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When transmitting, the pin DIO4 of SX1278 is set to low level, and when receiving, the pin DIO4 of SX1278
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is set to high level. Users need to program it to control.
When transmitting, the internal intelligent control of the module is started and simultaneously DIO4 is set low;
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When receiving, the internal intelligent control of the module is started and simultaneously DIO4 is set high .
Re-initialize register configuration when the chip is idle for higher stability.
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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.
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Data lose rate will be affected by temperature, humidity and co-channel interference.
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The ground will absorb and reflect wireless radio wave, so the performance will be poor when testing near ground.
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Sea water has great ability in absorbing wireless radio wave, so performance will be poor when testing near the sea.
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E19-433M20S2 User Manual
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