StuartsProjects

Displaying Images The receiver software used in the previous ESP32CAM project stored the received image on an SD card and if the receiver was connected via the serial terminal to a PC it could then transfer the images to a folder on the PC.

The original ESP32CAM board is a small and low cost camera board and in a previous project I developed code to allow the transfer of the images to a remote receiver with LoRa.

The adverse impact of some power banks For Meshtastic, which uses LoRa devices, its common to see static nodes that are used for relays and repeaters that are solar powered.

LoRa SX1262 vs LR1121 The original SX127X series of UHF LoRa devices was improved when the SX126x series was launched and now we have the further improved LR11xx series.

Simple Testing of 868Mhz Antennas and Boards I was interested in giving Meshtastic a try, it uses LoRa after all.

In Part1; https://stuartsprojects.github.io/2024/07/23/Improving-LoRa-Reception.html The AB-IOT-433 was tested in an open field to see if the Low Noise Amplifier (LNA) it uses would improve LoRa reception so that packets could be received at longer distan…

I often see posts on forums where users are having problems reading the location parameters from a GPS using the TinyGPSplus library.

Introduction Whilst this post is specifically about using a PA (transmitter power amplifier) and LNA (low noise receiver amplifier) to improve or extend LoRa reception it does also describe a very simple method that can be used to accurately test and meas…

I have previously written an article about testing the real world effectiveness of antennas on LoRa devices but recently it occurred to me that the availability of the small ESP32 LoRa and OLED display boards such as those made by Heltec and Lilygo made it

Despite being very easy to build, this board is a fairly powerful LoRaWAN node, ideally suited for long term battery use which is also very small and light; only 6g + sensor + battery.