Это интегрированная плата разработки, объединяющая микроконтроллер Raspberry Pi RP2040 и RF-чип Semtech SX1262 LoRa..
It is designed for:
- Низкое энергопотребление
- Long-range communication
- Easy development
- Scalable mass production integration
Поддерживает:
- LoRa point-to-point communication
- Broadcast and relay networking
- LoRaWAN terminal development (with gateway support)
1. Основное позиционирование & Ключевые преимущества
Microcontroller (MCU)
- Raspberry Pi RP2040 (official chip)
- Dual-core Cortex-M0+ @ 133 МГц
- 264 КБ СРАМ + 2 МБ флэш-памяти
- Supports MicroPython, C/C++, and UF2 drag-and-drop programming
- Mature ecosystem, для начинающих
Радиочастотные характеристики (SX1262)
- Next-generation LoRa chip (upgrade from SX1278)
- Receiver sensitivity: -148 дБм
- Max transmit power: 22 дБм
- Сверхнизкое энергопотребление: sleep < 2 мкА
- Сильная защита от помех
- Communication range: 5–8 km+ (line-of-sight)
Hardware Design
- Штамп-отверстие + pin header dual design
- Suitable for direct PCB integration (mass production)
- Also supports breadboard prototyping
- Detachable Type-C interface (via FPC connector)
- Enables debugging and programming
- Can be removed in production to reduce cost
Communication Protocols
- Native support for:
- LoRa point-to-point
- Broadcast
- Relay networking
- Поддерживает ЛоРаВАН (Class A/B) via gateway integration
- Compatible with TTN and ChirpStack
- Ideal for LPWAN IoT deployments
2. Ключевые характеристики (LF / HF Versions)
| Параметр | Спецификация |
|---|---|
| MCU | RP2040 (Dual-core Cortex-M0+ @133 MHz, 264 КБ СРАМ, 2 МБ флэш-памяти) |
| РФ чип | Семтек SX1262 |
| Частота | LF: 410–525 MHz (433/470 МГц) / HF: 850–930 МГц (868/915 МГц) |
| Модуляция | Лора / (Г)ФСК |
| Мощность передачи | 0–22 dBm (10 / 13 / 17 / 22 dBm adjustable) |
| Чувствительность приемника | -148 dBm @ 2.4 kbps (SF12, 125 кГц) |
| Скорость передачи данных | Лора: 0.3–62,5 кбит/с; ФСК: до 300 kbps |
| Range | 5–8 km+ (LOS, 22 дБм + 5 dBi antenna) |
| Потребляемая мощность | Техас: 107–118 mA; прием: 5.3 мА; Спать: <2 мкА |
| Power Supply | 3.3В (Type-C or pin header), battery supported |
| Интерфейсы | СПИ, GPIO, УАРТ, I2C, PWM, АЦП |
| Antenna | IPEX connector (supports SMA / external antenna) |
| Размер | 21 × 41 мм (Pico-compatible form factor) |
| Operating Temp | -40°С до +85°С |
3. Onboard Hardware & Интерфейсы
RP2040 MCU Section
- Dual-core Cortex-M0+ up to 133 МГц
- Встроенный 264 KB SRAM and 2 МБ флэш-памяти
- Supports UF2 drag-and-drop programming (USB mass storage mode)
GPIO Expansion:
- 20+ multifunction GPIOs
- Supports SPI, I2C, УАРТ, PWM, АЦП
- Compatible with Raspberry Pi Pico ecosystem
Buttons & Indicators:
- Reset button
- BOOT button (enter programming mode)
- Power and status LEDs
Modular Design:
- Mainboard connects via FPC (8-приколоть) to Type-C adapter
- Adapter provides power, отладка, and programming
- Can be removed for direct PCB integration
SX1262 RF Section
- Independent RF circuit with shielding for improved stability
- IPEX antenna connector for external high-gain antennas
- SPI communication with RP2040
Supports advanced features:
- Wake-on-Radio (WOR)
- Слушайте, прежде чем говорить (ЛБТ)
- Проверка ошибок CRC
- RSSI detection
- Фильтрация адресов
- Шифрование данных
4. Основные функции & Development Features
LoRa Communication
- Point-to-Point / Broadcast / Multicast
Direct communication between nodes without a gateway - Multi-Hop Relay
Extends communication range and overcomes obstacles - LoRaWAN Terminal Support
Compatible with TTN and ChirpStack for cloud connectivity
Сверхнизкое энергопотребление
- Supports WOR (Wake-on-Radio)
- Nodes remain in sleep mode and wake periodically
- Battery-powered operation for months to 1 year
Экосистема развития
- Programming Languages:
- МикроПитон (recommended for rapid prototyping)
- C/C++ (Ардуино / Pico SDK)
- Отладка:
- Type-C interface for serial communication
- PC tools for configuration and data transmission
- Resources:
- Official Wiki
- Schematics & PCB files
- Example code (Python / С)
- LoRaWAN integration examples
- AT command set
5. Типичные применения
IoT End Devices
- Температура, влажность, давление, уровень жидкости, soil, PM2.5 sensors
- Smart meters (electricity, water, gas)
- Security systems (alarms, обнаружение движения)
Industrial Wireless Systems
- PLC communication
- Equipment monitoring
- Системы дистанционного управления
- Factory IoT networking
Умное сельское хозяйство & Экологический мониторинг
- Теплицы
- Weather stations
- Water quality monitoring
- Forest fire detection
- Remote outdoor sensing
Battery-Powered Devices
- дальнобойный, low-power wireless transmission
- Ideal for remote and off-grid environments
Mass Production Integration
- Stamp-hole design enables direct soldering onto product PCBs
- Eliminates need for separate MCU + Модуль ЛоРа
- Reduces system cost and complexity
6. Разработка & Примечания по использованию
Настройка оборудования
- Connect via breadboard or solder onto baseboard
- Attach IPEX antenna (do not transmit without antenna)
- Power via Type-C or 3.3V
Quick Start
- Use MicroPython with SX1262 driver
- Configure frequency, data rate, and transmit power
- Use send/receive functions for communication
Frequency Compliance
- Use LF version (433/470 МГц) for China
- Follow local RF regulations for power and frequency
Важные примечания
- SX1262 is a physical layer chip
- LoRaWAN requires protocol stack implementation or libraries
- Point-to-point communication does NOT require a gateway
- LoRaWAN requires a compatible gateway
