Published January 7, 2020 © CC BY-NC-ND

LoRa E32 Device Arduino Shield (8Km Support)

E32 LoRa (long range) device very cheap and very long range (from 3Km to 8Km), here an Arduino shield for my library.

IntermediateFull instructions provided2 hours4,884

LoRa E32 Device Arduino Shield (8Km Support)

Things used in this project

Hardware components

Arduino UNO

E32-TTL-100 3Km LoRa

E32-TTL-1W 8Km LoRa

Software apps and online services

Arduino IDE

Arduino Web Editor

Hand tools and fabrication machines

Soldering iron (generic)

Story

E32-TTL-100 is a wireless transceiver module based on SX1278 from SEMTECH(can be transmitter and receiver both). It adopts LoRa spread spectrum technology, with this technology the transmitting distance and penetration ability of the module improved more than 1 times compared with traditional FSK.

You can find module here AliExpress (3Km) - AliExpress (8Km)

Arduino UNO shield

I create a Library an Arduino shield very usefully to use.

With this board you can use this device directly without problem or voltage divider.

The configuration is this:

LoRa_E32 e32ttl(4, 5, 3, 7, 6);

Than you can use all examples inside the library, you can use pin 6 and 7 to do a full connection or disable they and put M0 and M1 as you want with dipswitch.

Here the first test, seems all ok.

LoRa E32 request configuration logic analyzer Arduino

Now we are going to do a massive production.

Ready to go

The shield have some jumper and dip switch to configure M0 and M1.If you want set M0 and M1 to a fixed value you must put jumper to F, if you want control via pin to P.If you set to F you must put dip switch on property value Low or High.

Shopping List

You can find module here

Amount Part Type Properties 1 Lora E32-TTL-100 variant 1; voltage 3-5V; type Basic

1 DIP SWITCH channels 1; package dipswitch-02

2 Generic male header – 3 pins pins 3; pin spacing 0.1in (2.54mm); hole size 1.0mm, 0.508mm; form ♂ (male); package THT; row single

1 Arduino Uno (Rev3) type Arduino UNO (Rev3)

3 4.7kΩ Resistor bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 4.7kΩ

3 1kΩ Resistor bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 1kΩ

3 2kΩ Resistor bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 2kΩ

3 10kΩ Resistor bands 4; tolerance ±5%; pin spacing 400 mil; package THT; resistance 10kΩ

1 Momentary Tactile Push Button package [THT]

1 Generic female header – 7 pins Pin spacing 0.1in (2.54mm);

2 Generic male/female header – 8 pins Pin spacing 0.1in (2.54mm);

1 Generic male/female header – 6 pins Pin spacing 0.1in (2.54mm);

1 Generic male/female header – 10 pins Pin spacing 0.1in (2.54mm);

You can get my PCB shield here from PcbWay.

Here my Crtistmas present

I chose this manufacturer because at the same cost it offers excellent quality, in the first screen it is possible to make countless options suitable for every need.

The board as you can see on various photo is very beautiful and simply to solder.

Here the soldering video.

Here the result

Thanks

LoRa E32 device for Arduino, esp32 or esp8266: settings and basic usage
LoRa E32 device for Arduino, esp32 or esp8266: library
LoRa E32 device for Arduino, esp32 or esp8266: configuration
LoRa E32 device for Arduino, esp32 or esp8266: fixed transmission
LoRa E32 device for Arduino, esp32 or esp8266: power saving and sending structured data
LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) the microcontroller and Arduino shield
LoRa E32 device for Arduino, esp32 or esp8266: WOR (wake on radio) the microcontroller and WeMos D1 shield

/*
* LoRa E32-TTL-100
* Receive fixed transmission message on channel.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP &amp; Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LowPower.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
//LoRa_E32 e32ttl(D2, D3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(4, 5, 3, 7, 6);
LoRa_E32 e32ttl(4, 5, 3); // Config without connect M0 M1
// Use pin 2 as wake up pin
const int wakeUpPin = 3;
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(4, 5); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 3, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
void wakeUp()
{
Serial.println("WAKE!");
}
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
e32ttl.begin();
//	e32ttl.resetModule();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
//	ResponseStructContainer c;
//	c = e32ttl.getConfiguration();
//	Configuration configuration = *(Configuration*) c.data;
//	configuration.ADDL = 3;
//	configuration.ADDH = 0;
//	configuration.CHAN = 0x04;
//	configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
//	configuration.OPTION.wirelessWakeupTime = WAKE_UP_250;
//
//    configuration.OPTION.fec = FEC_1_ON;
//    configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS;
//    configuration.OPTION.transmissionPower = POWER_20;
//
//    configuration.SPED.airDataRate = AIR_DATA_RATE_010_24;
//    configuration.SPED.uartBaudRate = UART_BPS_9600;
//    configuration.SPED.uartParity = MODE_00_8N1;
//
//	e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
//	printParameters(configuration);
// ---------------------------
Serial.println();
Serial.println("Start listening!");
e32ttl.setMode(MODE_2_POWER_SAVING);
// Allow wake up pin to trigger interrupt on low.
attachInterrupt(0, wakeUp, LOW);
// Enter power down state with ADC and BOD module disabled.
// Wake up when wake up pin is low.
LowPower.powerDown(SLEEP_FOREVER, ADC_OFF, BOD_OFF);
// Disable external pin interrupt on wake up pin.
detachInterrupt(0);
Serial.println("OK listening!");
}
// The loop function is called in an endless loop
void loop()
{
if (e32ttl.available()  > 1){
ResponseContainer rs = e32ttl.receiveMessage();
// First of all get the data
String message = rs.data;
Serial.print("Received --> ");
Serial.print(rs.status.getResponseDescription());
Serial.print(" - ");
Serial.println(message);
}
delay(125);
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, DEC);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, DEC);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

/*
* LoRa E32-TTL-100
* Send fixed broadcast transmission message to a specified channel.
* https://www.mischianti.org
*
* E32-TTL-100----- Arduino UNO or esp8266
* M0         ----- 3.3v (To config) GND (To send) 7 (To dinamically manage)
* M1         ----- 3.3v (To config) GND (To send) 6 (To dinamically manage)
* RX         ----- PIN 2 (PullUP &amp; Voltage divider)
* TX         ----- PIN 3 (PullUP)
* AUX        ----- Not connected (5 if you connect)
* VCC        ----- 3.3v/5v
* GND        ----- GND
*
*/
#include "Arduino.h"
#include "LoRa_E32.h"
// ---------- esp8266 pins --------------
//LoRa_E32 e32ttl(D2, D3, D5, D7, D6);
LoRa_E32 e32ttl(D2, D3, D5, D7, D6); //, D5); //, D7, D6); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(D2, D3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, D5, D7, D6);
// -------------------------------------
// ---------- Arduino pins --------------
//LoRa_E32 e32ttl(2, 3, 5, 7, 6);
//LoRa_E32 e32ttl(2, 3); // Config without connect AUX and M0 M1
//#include <SoftwareSerial.h>
//SoftwareSerial mySerial(2, 3); // RX, TX
//LoRa_E32 e32ttl(&amp;mySerial, 5, 7, 6);
// -------------------------------------
void printParameters(struct Configuration configuration);
void printModuleInformation(struct ModuleInformation moduleInformation);
//The setup function is called once at startup of the sketch
void setup()
{
Serial.begin(9600);
while (!Serial) {
; // wait for serial port to connect. Needed for native USB
}
delay(100);
while (!e32ttl.begin()) {
delay(2000); // wait for serial port to connect. Needed for native USB
}
e32ttl.setMode(MODE_1_WAKE_UP);
//	e32ttl.resetModule();
// After set configuration comment set M0 and M1 to low
// and reboot if you directly set HIGH M0 and M1 to program
ResponseStructContainer c;
c = e32ttl.getConfiguration();
Configuration configuration = *(Configuration*) c.data;
printParameters(configuration);
//	configuration.SPED.uartBaudRate = UART_BPS_9600;
//	configuration.SPED.airDataRate = AIR_DATA_RATE_010_24;
configuration.ADDL = 0x01;
configuration.ADDH = 0x00;
configuration.CHAN = 0x04;
configuration.OPTION.fixedTransmission = FT_FIXED_TRANSMISSION;
configuration.OPTION.wirelessWakeupTime = WAKE_UP_750;
configuration.OPTION.fec = FEC_1_ON;
configuration.OPTION.ioDriveMode = IO_D_MODE_PUSH_PULLS_PULL_UPS;
configuration.OPTION.transmissionPower = POWER_20;
configuration.SPED.airDataRate = AIR_DATA_RATE_010_24;
configuration.SPED.uartBaudRate = UART_BPS_9600;
configuration.SPED.uartParity = MODE_00_8N1;
e32ttl.setConfiguration(configuration, WRITE_CFG_PWR_DWN_SAVE);
printParameters(configuration);
// ---------------------------
}
int i = 0;
// The loop function is called in an endless loop
void loop()
{
i++;
// ResponseStatus LoRa_E32::sendFixedMessage(byte ADDL, byte ADDH, byte CHAN, const String message)
String mess = "Message to 00 03 04 deviceMessage to  ";
String compMEss = mess+i;
Serial.print(compMEss);
Serial.print(" - ");
ResponseStatus rs = e32ttl.sendFixedMessage(0, 3, 0x04, compMEss);
Serial.println(rs.getResponseDescription());
delay(8000);
}
void printParameters(struct Configuration configuration) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD : "));  Serial.print(configuration.HEAD, BIN);Serial.print(" ");Serial.print(configuration.HEAD, DEC);Serial.print(" ");Serial.println(configuration.HEAD, HEX);
Serial.println(F(" "));
Serial.print(F("AddH : "));  Serial.println(configuration.ADDH, DEC);
Serial.print(F("AddL : "));  Serial.println(configuration.ADDL, DEC);
Serial.print(F("Chan : "));  Serial.print(configuration.CHAN, DEC); Serial.print(" -> "); Serial.println(configuration.getChannelDescription());
Serial.println(F(" "));
Serial.print(F("SpeedParityBit     : "));  Serial.print(configuration.SPED.uartParity, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTParityDescription());
Serial.print(F("SpeedUARTDatte  : "));  Serial.print(configuration.SPED.uartBaudRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getUARTBaudRate());
Serial.print(F("SpeedAirDataRate   : "));  Serial.print(configuration.SPED.airDataRate, BIN);Serial.print(" -> "); Serial.println(configuration.SPED.getAirDataRate());
Serial.print(F("OptionTrans        : "));  Serial.print(configuration.OPTION.fixedTransmission, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFixedTransmissionDescription());
Serial.print(F("OptionPullup       : "));  Serial.print(configuration.OPTION.ioDriveMode, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getIODroveModeDescription());
Serial.print(F("OptionWakeup       : "));  Serial.print(configuration.OPTION.wirelessWakeupTime, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getWirelessWakeUPTimeDescription());
Serial.print(F("OptionFEC          : "));  Serial.print(configuration.OPTION.fec, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getFECDescription());
Serial.print(F("OptionPower        : "));  Serial.print(configuration.OPTION.transmissionPower, BIN);Serial.print(" -> "); Serial.println(configuration.OPTION.getTransmissionPowerDescription());
Serial.println("----------------------------------------");
}
void printModuleInformation(struct ModuleInformation moduleInformation) {
Serial.println("----------------------------------------");
Serial.print(F("HEAD BIN: "));  Serial.print(moduleInformation.HEAD, BIN);Serial.print(" ");Serial.print(moduleInformation.HEAD, DEC);Serial.print(" ");Serial.println(moduleInformation.HEAD, HEX);
Serial.print(F("Model no.: "));  Serial.println(moduleInformation.model, HEX);
Serial.print(F("Version  : "));  Serial.println(moduleInformation.version, HEX);
Serial.print(F("Features : "));  Serial.println(moduleInformation.features, HEX);
Serial.println("----------------------------------------");
}

Credits

Renzo Mischianti

35 projects • 45 followers

Software developer but I love electronics, wood, nature, and everything else as well. Now blogger? on www.mischianti.org

LoRa E32 Device Arduino Shield (8Km Support)

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Arduino UNO shield

Now we are going to do a massive production.

Thanks

Code

Code snippet #2

Code snippet #3

Code snippet #4

Credits

Renzo Mischianti

Comments

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LoRa E32 Device Arduino Shield (8Km Support)

LoRa E32 Device Arduino Shield (8Km Support)

Things used in this project

Hardware components

Software apps and online services

Hand tools and fabrication machines

Story

Arduino UNO shield

Now we are going to do a massive production.

Thanks

Code

Code snippet #2

Code snippet #3

Code snippet #4

Credits

Renzo Mischianti

Comments

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