Description

LoRa technology and Lora devices have been widely used in the field of the Internet of Things (IoT), and more and more people are joining and learning Lora development, making it an indispensable part of the IoT world. This Lora development board uses RP2040 as the main control and is equipped with the LR1262 module that supports Lora and LoRaWAN protocols to help users realize development. RP2040 is a dual-core, high-performance, and low-power ARM Cortex-M0+ architecture chip, suitable for IoT, robots, control, embedded systems, and other application fields. The LR1262 Dev Board is an ultra-low remote transceiver module based on the STM32WLE5CC chip, specially designed for LoRa and LoRaWAN applications.

This board retains various functional interfaces for development, such as the Crowtail interface, which can adapt to Crowtail module series, the common PIN to PIN header that leads out GPIO ports, and provides 3.3V and 5V outputs, suitable for the development and use of commonly used sensors and electronic modules on the market. In addition, the board also reserves RS485 interface, SPI, I2C, and UART interfaces, which can be compatible with more sensors/modules.

In addition to the basic development interfaces, the board also integrates some commonly used functions, such as a buzzer, a custom button, red-yellow-green three-color indicator lights, and a 1.8-inch SPI interface LCD screen with a resolution of 128*160. We try to minimize the trouble of connecting these components for users when developing and building project prototypes.

GPIO Pin Definition

RP2040	LR1262 Development Board
GPIO0	LR1262-RXD	GPIO15	GPIO15/ Crowtail-D1
GPIO1	LR1262-TXD	GPIO16	LCD-DC
GPIO2	GPIO2	GPIO17	LCD-CS
GPIO3	GPIO3	GPIO18	LCD-SCK
GPIO4	Crowtail-UART1-TXD	GPIO19	LCD-DIN
GPIO5	Crowtail-UART1-RXD	GPIO20	I2C0-SDA0/Crowtail-I2C-SDA/PCA9555-SDA
GPIO6	GPIO6	GPIO21	I2C0-SCL0/Crowtail-I2C-SCL/ PCA9555-SCL
GPIO7	GPIO7	GPIO22	LCD-RST
GPIO8	GPIO8/UART1-TX1/Crowtail-UART1-TX1/485TX	GPIO23	LCD-BLK
GPIO9	GPIO9/UART1-RX1Crowtail-UART1-RX1/485RX	GPIO24	485-EN
GPIO10	GPIO10/SPI1-SCK	GPIO25	DATA
GPIO11	GPIO11/SPI1-MOSI	GPIO26	A0/ Crowtail-A0
GPIO12	GPIO12/SPI1-MISO	GPIO27	A1/ Crowtail-A1
GPIO13	GPIO13/SPI1-CS	GPIO28	BUZZER
GPIO14	GPIO14/ Crowtail-D0	GPIO29	ADC-KEY

Feature

Uses RP2040 as the main controller, with two 32-bit ARM Cortex M0+ processor cores (dual-core) ,and provides more powerful performance
Integrates the LR1262 module supports the 868/915MHz frequency band and AT command control
Abundant external interface resources, compatible with Crowtail series modules and other commonly interface modules on the market
Integrates commonly used functionslike buzzer, LED light, LCD display and custom button, making it more concise and convenient when creating projects
Onboard 1.8-inch 128*160 SPI-TFT-LCD, ST7735S driver chip
Compatible with Arduino/Micropython, easy to carry out different projects.

Specification

Main Chip	Raspberry Pi chip RP2040, built-in 264KB SRAM, onboard 4MB Flash
Processor	Dual Core Arm Cortex-M0+ @ 133MHz
LR1262 Supports frequency band	803MHZ-930MHZ
LR1262 Support Interface	External antenna, SMA interface or IPEX first generation interface
LCD Display	Onboard 1.8-inch 128*160SPI-TFT-LCD
LCD Resolution	128*160
LCD Driver	ST7735S (4-wire SPI)
Development environment	Arduino/Micropython
Interface	1x RS485 communication interface, 8x 5V Crowtail interfaces (2x analog interfaces, 2xdigital interfaces, 2xUART interfaces, 2xIIC interfaces) 12x 5V universal pin header IO interfaces 14x 3.3V universal pin header IO interfaces 1x 3.3V/5V switchable SPI interface 1x 3.3V/5V switchable UART interface 3x 3.3V/5V switchable IIC interfaces
Buttons and functions	1x passive buzzer, 4x user-defined buttons, 6x programmable LEDs
Working input voltage	USB 5V-1A
Operating temperature	-10°C ~ 65°C
Dimensions	102mm(L)x76.5mm(W)