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Questions tagged [lora]

For use on posts about LoRa devices which don't implement LoRaWAN. LoRa stands for for long range and is a spread spectrum modulation technique.

LoRa stands for long range and is a proprietary CSS modulation technology used for LoRaWAN patented by Semtech. It is an technology in the LPWAN space.

Useful links

211 questions
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LoRaWAN DevEUI, AppEUI and AppKey

I'm trying to understand the three magic LoRaWAN IDs from the LoRaWAN 1.2 specification. My understanding is: DevEUI is like a MAC address AppKey is like a public key (roughly...) AppEUI is like a port number Now I'm having problem understanding…
Matthieu
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LoRa point-to-point limitations

I want to set up a point-to-point communication link between two Raspberry Pi using LoRa. I know for lorawan there is (at least in Europe, where I live) a duty cycle limitation so the nodes can transmit only for an average of 30 seconds uplink time…
clf maris
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What prevents LoRaWAN nodes accepting the same JOIN ACCEPT message in OTAA

I surely must have missed something from my reading of the LoRaWAN specifications, because this seems too bad to be true. Please tell me I'm delirious :) The following seems to happen in my testbed when I have many OTAA nodes and I can't figure out…
BjornW
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How to load a fine-tuned peft/lora model based on llama with Huggingface transformers?

I've followed this tutorial (colab notebook) in order to finetune my model. Trying to load my locally saved model model = AutoModelForCausalLM.from_pretrained("finetuned_model") yields Killed. Trying to load model from hub: yields import…
Lucas Azevedo
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Stm32CubeProgrammer not connecting (no error msg) using ST-LINK V2 dongle and Lora E5 mini board

I've tried countless settings in an attempt to program my stm32 board. The main tutorial I followed is https://wiki.seeedstudio.com/LoRa_E5_mini/. I have connected a USB st-link v2 dongle to my laptop with pins SWDIO, SWCLK, GND correctly wired to…
Cu29p
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LoRa point-to-point communication

I would like to create a point-to-point connection between a LoRa temperature sensor and a M5 Stack (ESP32) with LoRa module. However, I am a beginner with LoRa, so I have a few questions: Are all packets send with LoRa (not LoRaWAN) encrypted? Or…
Nina
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Low-power ESP32 + LoRa with deep sleep mode (TTGO LoRa32 OLED Board V1.0)

I'm trying to transmit from one ESP32 LoRa node to another one in low-power mode and in compliance with european regulations. ESP32 board: TTGO LoRa32 OLED Board V1.0 (here and here). Below the LoRa sender sketch I wrote: /* * LoRa (low-power)…
nwdom
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Further finetune a Peft/LoRA finetuned CausalLM Model

I am a bit unsure how to proceed regarding the mentioned topic. The baseline is a model created via Huggingface’s library as an AutoModelForCausalLM model, PEFT and a LoRA approach with subsequent merging of the weights. I now want to further fine…
Julian Gerhard
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How to fuse 4-bit LLAMA weights with LoRA ones into one .pt file?

I followed this manual and got llama-7b-hf-int4 (got llama-7b-4bit.pt ) and samwit/alpaca7B-lora (got adapter_model.bin). Now I want to merge them into a single .pt 4bit model. How to do such a thing? Why I need this: current lama.cpp supports only…
DuckQueen
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Lora packet data is encoded as hex string but decoding to ASCII is showing nonsense

I am using 2 LHT65N sensors, a Wisgate Edge Lite 2 Gateway, forwarding the payload to a Mosquitto broker, and to display data I am using mqtt.js. I am receiving packets from the sensors and the data I get is a hex string, but when I am decoding it…
ptxd
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Send data between two pico with LoRa

I am trying to send data from a Pico Raspberry Pi to another Pico through an SX1262, but I can't send it. I already tried the ping pong example, but the SX1262 library gives me errors in the Thonny IDE. Traceback (most recent call last): File "",…
Marwa Moussa
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Can I use raspi-lora with The Things Network for a Raspberry end node

I am trying to create a Raspberry Pi 3 end node (NOT GATEWAY) with the Adafruit RFM96W module and raspi-lora library but it seems that the library has no configurable APPSKEY, NWKSKEY, DEVADDR and etc., so I won't be able to receive downlinks from…
Ivan Zlatanov
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IDs for LoRa modules

I use two SX1278 LoRa Ra-02 modules for communication. I wonder how I can set IDs for these two modules to deny an interference with other LoRa modules which work at the same frequency. I mean, is there a solution similar to pipe addresses of…
mhmt
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Discovery board STM32L0 (LoRaWAN) -> How to configure the stop mode correctly?

I come there after some days of work on the stop mode on the discovery board STM32L0 with LoRaWAN. I tried to generate a new project which does nothing, to test the stop mode with RTC following the datasheet and measure the current consumption. I…
pmathelin
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Implement TDMA with raw LoRa

I am building a private LoRa network without LoRaWAN protocol. The network consists of around 50 nodes(arduino pro mini) and one gateway(esp32). To save energy it's better to have feature like class-B or TDMA. I draw a flow chart and The main…
Shuyang An
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