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E34-2G4H27D User Manual

n 2.4GHz TTL Auto Frequency Hopping Module

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Summary of Contents for E34-2G4H27D

Page 1: ...0 E34 2G4H27D User Manual nRF24L01 2 4GHz TTLAuto Frequency Hopping Module ...

Page 2: ...IXED TRANSMISSION 6 5 2 RESET 7 5 3 AUX DESCRIPTION 7 5 3 1 Indication of UART output 7 5 3 2 Indication of wireless transmitting 7 5 3 3 Configuration procedure of module 8 5 3 4 Notes for AUX 8 6 OPERATING MODE 9 6 1 MODE SWITCH 9 6 2 FIXED FREQUENCY MODE MODE 0 9 6 3 FREQUENCY HOPPING MODE MODE 1 10 6 4 RESERVATION MODE MODE 2 10 6 5 SLEEP MODE MODE 3 10 6 6 QUICK COMMUNICATION TEST 11 7 INSTRU...

Page 3: ... Electronic Technology Co Ltd 2 8 HARDWARE DESIGN 14 9 FAQ 15 9 1 COMMUNICATION RANGE IS TOO SHORT 15 9 2 MODULE IS EASY TO DAMAGE 15 9 3 BER BIT ERROR RATE IS HIGH 16 10 PRODUCTION GUIDANCE 16 11 E34 SERIES 16 12 ANTENNA RECOMMENDATION 16 13 PACKAGE FOR BATCH ORDER 17 REVISION HISTORY 18 ABOUT US 18 ...

Page 4: ...interference ability Support fixed frequency communication fast transmission speed and low latency Support automatic packet retransmission after packet loss Support fixed point transmission easy to start network communication Built in PA LNA with 500mW power communication distance tested is up to 5km It works at ISM 2 4GHz Air data rate 250k 2Mbps With advanced GFSK modulation Support 3 3V 5 5V po...

Page 5: ...L it may be at risk of burning down Operating temperature 40 85 Industrial design Operating frequency MHz 2400 2518 Power consumption Transmitting current mA 400 Instant power consumption Receiving current mA 21 Turn off current μA 510 Software is shut down Max Tx power dBm 26 5 27 0 27 5 Receiving sensitivity dBm 101 102 103 Air data rate is 250kbps Air data rate bps 250k 250k 2M The higher the r...

Page 6: ... 3 RXD Input TTL UART inputs connects to external MCU PC TXD output pin Can be configured as open drain or pull up input 4 TXD Output TTL UART outputs connects to external RXD MCU PC input pin Can be configured as open drain or push pull output 5 AUX Output To indicate module s working status wakes up the external MCU During the procedure of self check initialization the pin outputs low level Can ...

Page 7: ...yright 2012 2019 Chengdu Ebyte Electronic Technology Co Ltd 6 4 Connect to MCU No Description STM8L MCU 1 The UART module is TTL level 2 For some MCU works at 5VDC it may need to add 4 10K pull up resistor for the TXD AUX pin 5 Function description 5 1 Fixed transmission ...

Page 8: ...a that are not sent yet via wireless way or whether all wireless data has been sent through UART or whether the module is still in the process of self check initialization 5 3 1 Indication of UART output To wake up external MCU 5 3 2 Indication of wireless transmitting Buffer empty the internal 256 bytes data in the buffer are written to the RFIC Auto sub packaging When AUX 1 the user can input da...

Page 9: ...tputs low level if none of the low level condition is met AUX outputs high level When AUX outputs low level it means the module is busy cannot conduct operating mode checking Within 1ms since AUX outputs high level the mode switch will be completed After switching to new operating mode it will not work in the new mode immediately until AUX rising edge lasts for 2ms If AUX stays on the high level t...

Page 10: ... determine the operating mode Two mode GPIOs of the MCU can be used to control mode switching After changing M1 and M0 If the module is idle after 1ms it can start working according to the new mode If the serial port data of the module has not been transmitted wirelessly the new operating mode can be entered after the transmission is completed If the module receives wireless data and sends out dat...

Page 11: ...iving The wireless receiving function of the module is on the data packet transmitted from the module working in mode 0 mode 2 can be received After the data packet is received the AUX outputs low level 5ms later the module starts to transmit wireless data through serial port TXD pin After all the wireless data have been transmitted via serial port the AUX outputs high level Notes Module can not r...

Page 12: ...e changes from stand by mode to others the module will reset its parameters during which the AUX keeps low level and then outputs high level after reset completed It is recommended to check the AUX rising edge for user 6 6 Quick communication test Steps Operation 1 Plug the USB test board E15 USB T2 into computer make sure the driver is installed correctly Plug mode select jumper in the USB test b...

Page 13: ... are sent in hexadecimal format The module returns the version information and they must be sent in succession 5 C4 C4 C4 Three C4 are sent in hexadecimal format The module will reset one time and they must be sent in succession 7 1 Default parameters Default parameter values C0 00 00 18 00 40 Model Frequency Address Channel Air data rate Baud rate Parity Transmitting power E34 2G4H27D 2 4GHz 0x00...

Page 14: ...s only valid under mode 0 2 Default 15 times default F Lost data will be resent When multiple same addresses exist conflict may occur please set as 0 3 2 1 0 high address default F0H Default 0 2 ADDL Low address of module default 00H 00H 0FFH 3 SPED 7 6 UART parity bit UART mode can be different between communication parties 0 0 8N1 default 0 1 8O1 1 0 8 E1 1 1 8N1 equal to 00 5 4 3 TTL UART baud ...

Page 15: ...tputs RXD open collector inputs 5 4 3 2 N A 0 is recommended 1 0 Transmission power approximation The external power must make sure the ability of current output more than 800mA and ensure the power supply ripple within 100mV Low power is not recommended for power supply is not effective 0 0 27dBm Default 0 1 21dBm 1 0 15dBm 1 1 9dBm For example The meaning of No 3 SPED byte The binary bit of the ...

Page 16: ...module It is recommended to stay away from the module according to the strength of the interference If necessary appropriate isolation and shielding can be done If the communication line uses a 5V level a 1k 5 1k resistor must be connected in series not recommended there is still a risk of damage Try to stay away from some physical layers such as TTL protocol at 2 4GHz for example USB3 0 The mount...

Page 17: ...the power supply is reliable The extension line and feeder quality are poor or too long so the bit error rate is high 10 Production guidance This type is DIPmodule when the welder welds the module he must be welding according to the anti static regulation This product is allergic to static randomly welding the module will have the chance of damaging it permanently 11 E34 series Model No Core IC Fr...

Page 18: ...2400 JZ 3 Rubber antenna 2 4G 2 0 30 SMA J Short straight omnidirectional TX2400 JZ 5 Rubber antenna 2 4G 2 0 50 SMA J Short straight omnidirectional TX2400 JW 5 Rubber antenna 2 4G 2 0 50 SMA J Fixed bending omnidirectional TX2400 JK 11 Rubber antenna 2 4G 2 5 110 SMA J Flexible omnidirectional TX2400 JK 20 Rubber antenna 2 4G 3 0 200 SMA J Flexible omnidirectional TX2400 XP 150 Sucker antenna 2 ...

Page 19: ...y v1 0 2018 07 20 Initial version huaa v1 1 2019 03 19 Content update Ray 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 Innovation Center B333 D347 4 XI XIN Road Chengdu Sichuan China ...

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