JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

2026-09-05T22:13:58Z

Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex

Neue Seite

__NOINDEX__
'''Documentation notice:''' This technical documentation was independently rewritten from an archived supplier source. Check technical details and commands against the product version and manufacturer documentation before use.

== Summary ==
A concise overview of the Waveshare LoRa HAT based on Semtech chips, covering specifications, jumper configuration and common failure causes.

== Related products at JW Tech ==
* [https://shop.jw-tech.eu/p/WSAL16804 WSAL16804 – SX1268 LoRa HAT for Raspberry Pi, 433MHz Frequency Band, for Europe, Asia, Africa]
* [https://shop.jw-tech.eu/p/WSAL16805 WSAL16805 – SX1268 LoRa HAT for Raspberry Pi, 470MHz Frequency Band, for China]
* [https://shop.jw-tech.eu/p/WSAL16806 WSAL16806 – SX1262/SX1268 LoRa HAT for Raspberry Pi, UART Interface, Options For Frequency Band]
* [https://shop.jw-tech.eu/p/WSAL16807 WSAL16807 – SX1262 LoRa HAT for Raspberry Pi, 915MHz Frequency Band, for America, Oceania, Asia]

== Technical overview ==
* The module is built around the SX1262 or SX1268 chip set and communicates over a UART interface. It supports ISM frequency bands at 433, 470, 868 and 915 MHz.
* Transmit power is selectable (e.g., 10, 13, 17 or 22 dBm), and the packet length can be chosen among 32, 64, 128 and 240 bytes.
* Jumpers M0/M1 select the operating mode: short/short = transmit mode; short/open = configuration mode; open/short = wake-on-radio mode; open/open = deep-sleep mode.
* Signal quality can be evaluated via the RSSI value; an LBT feature is also available, measuring channel noise before transmission to improve success rates in harsh environments.
* Under ideal conditions, the module reaches up to 5 km range with clear line-of-sight, low air speed and a suitable antenna.
* Power consumption is approximately 100 mA in transmit, 11 mA in receive, and 2 µA in deep sleep.
* Logic voltage is 3.3 V, supply voltage is 5 V; the operating temperature range is -40 to +85 °C.
* For PC connection, a CP2102 driver is required over USB; the default test baud rate is 9600.
* To communicate with a Raspberry Pi, the serial port must be enabled and the appropriate Python library installed; demos run via a script with a configurable COM/serial port.
* The module uses a private protocol and does not support LoRaWAN.

'''Commands and examples – verify before use:'''
<syntaxhighlight lang="text">
# Enable the Raspberry Pi serial port (older systems)
sudo raspi-config
ls -l /dev/serial*
</syntaxhighlight>

== Notes and version constraints ==
* The exact commands for enabling the serial port depend on the Raspberry Pi system version; from 2021.10.30 onward, certain package installations are no longer needed.
* Demo scripts assume a specific COM port; if communication fails, verify the actual available port using 'ls -l /dev/serial*'.
* Compatibility with other LoRa modules from different manufacturers or series is not supported – only identical modules of the same type can communicate with each other.
* Switching between stream and packet modes affects reliability versus real-time behavior; the choice should match the application requirements.
* All range figures apply only under ideal conditions (open area, clear line-of-sight, suitable antenna); real-world distances will be considerably shorter.

== Source and revision record ==
* [https://www.waveshare.com/wiki/SX1262_868M_LoRa_HAT SX1262 868M LoRa HAT - Waveshare Wiki]
* Source revision: 45130
* Captured: 2026-08-31T03:52:04+00:00
* SHA-256: <code>58debdd6ea664a299af43eea74ff0e704dca12e506e491219ea1a81c5a2cd1df</code>

WSAL16804 – SX1262 868M LoRa HAT/en - Versionsgeschichte

JWTechPublisher: Freigegebene technische Dokumentation veröffentlicht; Text-only und noindex