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E32-433T20D User Manual

SX1278 433MHz 100mW TTL LoRa Wireless Module

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Summary of Contents for E32-433T20D

Page 1: ...E32 433T20D User Manual SX1278 433MHz 100mW TTL LoRa Wireless Module ...

Page 2: ...EXADECIMAL 8 5 3 BROADCAST ADDRESS 9 5 4 LISTENING ADDRESS 9 5 5 MODULE RESET 9 5 6 DETAILED AUX 9 5 6 1 Serial port data output indication 9 5 6 2 Wireless transmission indication 10 5 6 3 The module is being configured 10 5 6 4 AUX Notes 10 6 WORKING MODE 12 6 1 MODE SWITCH 12 6 2 GENERAL MODE MODE 0 13 6 3 WAKE UP MODE MODE 1 13 6 4 POWER SAVING MODE MODE 2 13 6 5 SLEEP MODE MODE 3 14 7 COMMAND...

Page 3: ...pyright 2012 20 22 Chengdu Ebyte Electronic Technology Co Ltd 2 9 3 BIT ERROR RATE IS TOO HIGH 18 10 WELDING OPERATION INSTRUCTIONS 18 11 RELATED MODELS 19 12 ANTENNA GUIDELINES 19 12 1 _ ANTENNA RECOMMENDATION 19 13 BULK PACKAGING METHOD 20 REVISE HISTORY 21 ABOUT US 21 ...

Page 4: ... any intellectual property rights The test data obtained in this article are all obtained by the Ebyte laboratory test and the actual results may be slightly different All trade names trademarks and registered trademarks mentioned herein are the property of their respective owners and are hereby acknowledged Final interpretation right belongs to Chengdu Ebyte Electronic Technology Co Ltd Note Due ...

Page 5: ...decryption algorithms The data compression function has the possibility to reduce the transmission time reduce the probability of being interfered and improve reliability and transmission efficiency E32 433T20D strictly abides by FCC CE CCC and other domestic and foreign design specifications meets various RF related certifications and meets export requirements 1 2 Features Support advanced LoRa m...

Page 6: ...ature 40 85 Industrial grade 2 2 Working parameters The main parameters performance Remark minimum Typical value maximum value Working voltage V 2 3 _ 5 0 5 5 _ 3 3 V guaranteed output power Communication level V 3 3 _ Risk of burnout with 5V TTL Working temperature 40 85 Industrial grade design Working frequency band M Hz 4 10 4 41 Support ISM frequency band factory default 4 33MHz Po we r co nsu...

Page 7: ... 5dBi antenna height 2 5m air rate 2 4kbps Subcontracting 5 8B tye The maximum capacity of a single package it will be automatically sub packaged when it exceeds Cache capacity 5 12B tye Modulation LoRa _ _ Communication Interface UART serial port TTL level Packaging method line interface 1 7 2 54mm Dimensions 2 1 36mm Antenna interface SMA K Characteristic impedance about 50 Ω 3 Mechanical Dimens...

Page 8: ... Can be configured as open drain or pull up input see parameter settings for details 4 TXD output TTL serial output connected to external RXD input pin Can be configured as open drain or push pull output see parameter settings for details 5 AUX output Used to indicate the working status of the module can be left floating The user wakes up the external MCU and outputs a low level during the power o...

Page 9: ...een the module and the microcontroller the above picture takes the STM8L microcontroller as an example 1 The wireless serial port module is TTL level please connect with TTL level MCU 2 Some 5V microcontrollers may need to add 4 10K pull up resistors to the TXD and AUX pins of the module 5 Function Details 5 1 Fixed point transmission 1 hexadecimal 5 2 Broadcast transmission 1 hexadecimal ...

Page 10: ...on AUX will output a low level immediately perform hardware self test and set the working mode according to user parameters During this process the AUX keeps the low level and after the completion the AUX outputs the high level and starts to work normally according to the working mode formed by the combination of M1 and M0 Therefore the user needs to wait for the rising edge of AUX as the starting...

Page 11: ...et of data may be being transmitted 5 6 3 The module is being configured Only at reset and when exiting sleep mode 5 6 4 AUX Notes For the above functions 1 and 2 the output low level is given priority that is if any one of the output low level conditions is satisfied the AUX outputs the low level when all the low level conditions are not satisfied the AUX outputs the high level When AUX outputs a...

Page 12: ...of the LoRa modulation method the information transmission delay is much longer than that of FSK For example at 1 2kbps airspeed the transmission delay of 100 bytes is about 1 5 seconds It is recommended that customers do not transmit large amounts of data at low airspeeds so as not to cause communication exceptions due to data loss caused by data accumulation ...

Page 13: ...s completed If the module receives wireless data and sends out data through the serial port it needs to be sent to the new working mode Therefore the mode switching can only be effective when the AUX output is 1 otherwise the switching will be delayed For example in mode 0 or mode 1 if the user continuously inputs a large amount of data and switches modes at the same time the mode switching operat...

Page 14: ...ackets from mode 0 and mode 1 After receiving the data packet the module AUX outputs low level and after a delay of 5ms it starts to send wireless data through the serial port TXD pin After all wireless data is output through the serial port the module outputs AUX high level 6 3 Wake up Mode Mode 1 type When M0 1 M1 0 the module works in mode 1 emission The conditions for the module to start data ...

Page 15: ...in hexadecimal format a total of 6 bytes must be sent continuously power off save 2 C1 C1 C1 Send three C1s in hexadecimal format and the module returns the saved parameters which must be sent continuously 3 C2 working parameters Send C2 5 bytes working parameters in hexadecimal format a total of 6 bytes must be sent continuously not saved when power off 4 C3 C3 C3 Three C3s are sent in hexadecima...

Page 16: ... power off C2 The set parameters will not be saved after power off 1 ADDH Module address high byte default 00H 00H FFH 2 ADDL Module address low byte default 00H 00H FFH 3 SPED 7 6 Serial check digit The serial port modes of both sides of the communication can be different 0 0 8N1 default 0 1 8O1 1 0 8E1 1 1 8N1 equivalent to 00 5 4 3 TTL serial port rate bps The baud rate of both sides of the com...

Page 17: ...mit the call code for the corresponding time The receiver works in mode 2 and this time refers to the monitoring interval wireless wake up of the receiver and can only receive data from the transmitter working in mode 1 0 0 0 250ms default 0 0 1 500ms 0 1 0 750ms 0 1 1 1000ms 1 0 0 1250ms 1 0 1 1500ms 1 1 0 1750ms 1 1 1 2000ms 2 FEC switch After FEC is turned off the actual data transmission rate ...

Page 18: ...d well grounded it must be close to the digital part of the module and routed on the Bottom Layer Assuming that the module is soldered or placed on the Top Layer it is also wrong to arbitrarily route wires on 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...

Page 19: ...pply to ensure that it is between the recommended supply voltages if exceeding the maximum value will cause permanent damage to the module Please check the stability of the power supply the voltage should not fluctuate greatly and frequently Please ensure anti static operation during installation and use and high frequency components are electrostatically sensitive Please ensure that the humidity ...

Page 20: ...0 M 20 3 0 3k 19 2k patch 1 6 26 IPEX stamp hole E32 900T30D 86 2 930 M 30 8 0 3k 19 2k Straight plug 24 43 SMA K E32 900T30S 86 2 930 M 30 8 0 3k 19 2k patch 2 5 40 3 IPEX stamp hole 12 Antenna Guidelines 12 1 _ Antenna recommendation Antennas play an important role in the communication process and often inferior antennas will have a great impact on the communication system Therefore our company ...

Page 21: ...l antenna T X433 JK 11 glue stick antenna 433M 2 5 _ 110 SMA J Bendable glue stick omnidirectional antenna T X433 JK 20 glue stick antenna 433M 3 0 200 SMA J Bendable glue stick omnidirectional antenna T X433 XPL 100 sucker antenna 433M 3 5 185 100 SMA J Small suction cup antenna cost effective T X433 XP 200 sucker antenna 433M 4 0 190 200 SMA J Small suction cup antenna low loss T X433 XPH 300 su...

Page 22: ...n Notes Maintenance man 1 0 2022 5 12 initial version Yan About us Technical support support cdebyte com Documents and RF Setting download link www ebyte com Thank you for using Ebyte products Please contact us with any questions or suggestions info cdebyte com Fax 028 64146160 Web www ebyte com Address B5 Mould Industrial Park 199 Xiqu Ave High tech Zone Chengdu Sichuan China ...

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