Raspberry Pi LoRa HAT (SX1268) – 433MHz Frequency Module

Overview

The Raspberry Pi LoRa HAT, utilizing the SX1268 chip, operates within the 433MHz frequency band and facilitates data transmission over distances of up to 5 kilometers via a serial port. This module employs advanced LoRa spread spectrum modulation technology, enabling extended communication ranges and supporting features such as auto-repeating for even longer transmissions. Additional functionalities include Wake on Radio, wireless configuration capabilities, carrier sensing, and secure communication keys.

Key Features

• Compatibility: Designed with a standard Raspberry Pi 40PIN GPIO extension header to support various Raspberry Pi models.
• Debugging Interface: Equipped with an onboard CP2102 USB to UART converter for straightforward serial debugging.
• UART Control: Provides a UART control interface for seamless integration with host boards like Arduino or STM32.
• LED Indicators: Four LED indicators allow easy monitoring of module status.
• Enhanced Communication Technology: Utilizes LoRa spread spectrum modulation with up to 84 signal channels for improved distance and interference resistance.
• Multi-Level Repeating Capability: Supports ultra-long-range communication by allowing multiple networks in the same area through automatic multi-level repeating.
• Low Power Consumption Modes: Features deep sleep and Wake on Radio options ideal for battery-operated applications.
• Customizable Security Keys: Offers customizable communication keys that enhance user data security by preventing unauthorized retrieval.
• Signal Monitoring Support (LBT): Monitors channel noise before transmission to improve success rates in challenging environments.
• RSSI Signal Quality Indication: Assists in evaluating signal quality and optimizing network performance through RSSI support.
• Wireless Configuration Options: Allows remote configuration or parameter retrieval via wireless command/data packets.

Onboard Components

1. SX1268 LoRa module
2. Voltage level translator (74HC125V)
3. USB TO UART converter (CP2102)
4. GPIO connector compatible with Raspberry Pi
5. USB TO UART port
6. UART header for host board connections
7. SMA antenna connector
8. IPEX antenna connector
9. Status indicators:

– RXD/TXD (UART RX/TX)
– AUX (auxiliary status)
– PWR (power status)

1. Jumper settings:

– Control modes between USB TO UART and Raspberry Pi

Specifications

1. RF Module Type: SX1268
2. Frequency Range: 410.125 ~ 493.125 MHz
3. Programmable Radio Rate Range: 0.3 kbps ~ 62.5 kbps

4.Transmit Power Levels Available Up To :22 dBm
5.Receive Sensitivity Level : -147 dBm at radio rate of 2 .4 kbps
6.Power Consumption:
– Transmit Current Peak :110 mA
– Receive Current :11 mA
– Sleep Mode Current :2 µA
7.Communication Interface Type :UART(TTL level)
8.Baud Rate Range Supported :1200 bps ~115200 bps(9600 bps default)
9.Maximum Packet Length Supported :240 Bytes(32/64/128/240 Bytes programmable)
10.Cache Memory Size Available :1000 Bytes
11.Experimental Communication Range Achievable Under Ideal Conditions Up To :5 km
12.Power Supply Requirement Minimum Of Required Voltage Level Of Supply Is At Least ;5 V
13.Logic Level Compatibility;3 .3 V /5 V
14.Temperature Operating Range;From ;−40 °C To +85 °C
15.Applications Suitable For Include;Smart home automation ,industrial sensors ,building automation ,smart meters etc
16.Dimension Measurements Are As Follows;7 cm x12 cm x2 cm
17.Weight Measurement Is Approximately ;69 g
18.Packing List Includes :
SX1268 433MHz LoRa HAT x1
USB type A plug to micro plug cable x1
* Antenna operating at frequency of ;433 MHz

This product is ideal for developers looking to implement long-range IoT solutions across various applications such as smart homes, industrial controls, or data collection systems.

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