ماژول ترنسیور وایرلس LORA-RA02 با برد کمکی – Ai-Thinker

This functional module is based on the SX1278 chip and has a working frequency of 433 MHz.
This module includes UART, GPIO, LoRA Radio layer, SPI and I2C interfaces, etc.
The microcontroller communicates with the LoRa transmitter using UART to control and monitor applications.
The LORA module can be connected to boards such as Arduino and Raspberry Pi through the SPI protocol.
Applications
Smart building
Security and alarm systems
Industrial control and monitoring
Long distance irrigation systems
specifications
Operating frequency: 433 MHz
Working voltage: 1.8-3.3V DC
Incoming current: less than 10.8 mA
Discharge current: less than 120mA
Sleep mode is equal to: 0.2 microamps
Working temperature: -40 to +85 degrees Celsius
High sensitivity up to 148 dB
Interface: SPI
Spring antenna: external IPEX antenna
Data transfer rate: up to 300kbps
Support for: FSK, GFSK, MSK, GMSK, LoRa and OOK modulation modes
Support automatic RF signal detection, CAD mode and high speed AFC

ESP32 LoRa SX1278 Transmitter Receiver with OLED & DS18B20 Sensor
Now we will send the DS18B20 Sensor Temperature value wirelessly.
In the transmitter End we will add an extra DS18B20 Temeprature Sensor with Lora SX1278 & ESP32.
On the receiver end we will ad an 0.96″ I2C OLED Display to ESP32 with LoRa SX1278

LoRa SX1278 ESP32 Transmitter Circuit with DS18B20 Sensor

LoRa SX1278 ESP32 Receiver Circuit with OLED Display

The connection between Lora SX1278 & ESP32 still remains same.
But in the transmitter end, we added the DS18B20 Sensor. So, connect its input pin to GPIO4 of ESP32. Supply it with 3.3V VCC.
Similarly use a 4.7K resistor as a pull-up resistor and connect it between VCC and digital input pin.
On the receiver side, added an I2C OLED Display to ESP32 along with LoRa SX1278.
Connect the SDA & SCL pin of OLED Display to GPIO21 & GPIO22 of ESP32.

Libraries used
Here we use LoRa library by Sandeep Mistry, it is highly optimized library for SPI LoRa protocol modules.
You can also see more samples and browse each one to create new projects.