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Chapter 4 Recommended Wiring Diagram
A brief description of the connection between the module and the microcontroller (the above picture
NUM.
1
The wireless serial port module is TTL level, please connect with 3.3V TTL level MCU.
2
When using a 5V microcontroller, please perform UART level conversion.
TVS protection and capacitors need to be added outside the power supply (it is recommended to add
3
a 22uF low ESR electrolytic capacitor or tantalum capacitor)
4
The RF module is sensitive to pulsed static electricity. Do not hot-swap the module.
5
It is recommended to use a power supply above 10W (5V 2A) for power supply
DO1 and DO2 must be pulled up externally (open-drain output), otherwise they cannot output high
6
level
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takes the STM8L microcontroller as an example)
E150-400T30S user manual
9
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