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Jeroen W. Pluimers on .NET, C#, Delphi, databases, and personal interests

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Archive for the ‘LoRa – Long Range wireless communications network’ Category

MeshCore – Off grid mesh radio communications system

Posted by jpluimers on 2026/06/02

In a world where it becomes increasingly important to think and act on situations where for various communication via traditional means is not that easy any more, then LoRa (Long Range) wireless networks have been steadily gaining ground: they use open frequencies and for some of these networks, their repeater structure is largely ran by communities of volunteers.

Both communities and devices have evolved so far that its not just for early adopters any more: mere mortals can use it too.

In the LoRa area, MeshCore looks to have become the successor of Meshtastic:  [Wayback/Archive] MeshCore – Off grid mesh radio communications system.

The core difference between these two LoRa networks is explained in the Wikipedia article on MeshCore:

MeshCore is often compared with other LoRa-based mesh networking systems such as Meshtastic. While Meshtastic primarily relies on broadcast-style message flooding, MeshCore emphasizes structured routing roles and store-and-forward mechanisms, resulting in different scalability and energy-consumption characteristics.

Communication over the MeshCore network reminds me a lot of three things, in this chronological order:

I think about everything of MeshCore is open source; mostly hosted in the hierarchy at [Wayback/Archive] MeshCore · GitHub.

MeshCore is fairly young which means it will have growth pains, and some hardware pains (like a node being limited to about 500 messages/hour because of physical bandwidth limitations – smaller cells work better than the FidoNet hub/spoke model – see the Dutch section below) but it also cool to see it evolving.

This blog post is going to be long, as a lot of MeshCore information is spread around the interwebz, so there is a lot to link to.

Read the rest of this entry »

Posted in Development, Hardware, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User, Python, Scripting, Software Development, Solar Power | Tagged: , , , , , , , , , , , , , | Leave a Comment »

Interesting; Meshtastic

Posted by jpluimers on 2025/11/27

ImageOn my list of hardware/software to experiment with is [Wayback/Archive] Meshtastic:

An open source, off-grid, decentralized, mesh network built to run on affordable, low-power devices

Via [Wayback/Archive] @jilles_com@infosec.exchange on Twitter: “Will be taking to meshtastic.org Lora 433MHz modules to @hotelhacker. Might be cool if more people could bring some to setup a larger mesh and play with them. amzn.eu/d/aCgULy4

Products:

For both boards, this holds:

1. The Meshtastic program is not pre-installed on this product. If you need to install, please check the steps:

github.com/geeksville/Meshtastic-Android/blob/master/README.md

github.com/meshtastic/meshtastic-device/releases

2. If GPS does not work, the following situations may occur:

Install the Meshtastic firmware before and now reset the GPS when you switch to another firmware.

Reset steps: github.com/Xinyuan-LilyGO/LilyGo-LoRa-Series/tree/master/firmware/GPS_%20reset_test

3. If GPS is weak indoors, it can be used outdoors

4. The GPS antenna is not installed stably, you can check if the interface is attached to the GPS antenna

Related:

–jeroen

Posted in Development, Hardware, Hardware Development, Hardware Interfacing, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User | Leave a Comment »

My geigercounter (thanks Dinsdale for doing almost all the work!)

Posted by jpluimers on 2025/10/31

Thanks [Wayback/Archive] Dinsdale. – D💉ane ديانا дiане Blijf thuis ⭕️🇺🇦 (@Dinsdal85174312) / Twitter for all the effort (solder, 3D-print, assemble) to get it to work!

Documentation links:

Read the rest of this entry »

Posted in Hardware, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User | Tagged: | Leave a Comment »

433 MHz is not dead! Using an ESP32 board with LoRa module to talk to 433 MHz sensors – CNX Software

Posted by jpluimers on 2025/09/23

This was a cool post: [Wayback/Archive] 433 MHz is not dead! Using an ESP32 board with LoRa module to talk to 433 MHz sensors – CNX Software

433MHz LoRa Transceiver-based ESP32 board work with regular 433 MHz sensors found on the market. This gives end users a simple off-the-shelf solution for receiving these signals without having to use a soldering iron and making a circuit.

This opens many doors regarding 433 MHz sensor readings with one device, including weather stations, doors, PIR, TPMS, temperature, and BBQ sensors.
Recommended reading!

Related: [Wayback/Archive] Making your RF 433mhz sensors and devices communicate with your home automation, gateways comparison

–jeroen

Posted in Development, ESP32, Hardware, Hardware Development, IoT Internet of Things, LoRa - Long Range wireless communications network, MQ Message Queueing/Queuing, MQTT, Network-and-equipment, Power User, Software Development | Leave a Comment »

IoT & Smart Location of Things – Google Maps, Google Cloud

Posted by jpluimers on 2018/07/10

#IoT + Google Maps Geocoding API

Convert between addresses & geographic coordinates to determine the location of devices relative to known addresses https://goo.gl/BfwYTF

Edit 202400819: the Googl link above will die, and the link it pointed to (enterprise.google.com/maps/iot) back then pointed to [Wayback/Archive] IoT & Smart Location of Things – Google Maps, Google Cloud.

Source: [WayBackIoT & Smart Location of Things – Google Maps, Google Cloud

Via: [WayBack] Google Maps API – Google+

--jeroen

Posted in Development, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User, Software Development | Leave a Comment »

Kerlink IoT station page | LoRa | Semtech

Posted by jpluimers on 2016/11/07

This can be used for TheThingsNetwork.org.

Some downloads:

Attachments
File Last modified Size
Kerlink_gateway_channel_setup_v0.2.pdf 2015-05-18 17:20 838Kb
Kerlink_gateway_installation_R7.pdf 2015-08-13 14:32 805Kb
Python_gateway_spectrum_display.zip 2015-04-09 15:54 10Kb
kerlink_IoT_LoRa_update.zip 2015-08-13 14:27 63Kb
kerlink_IoT_LoRa_update_DHCP.zip 2015-08-13 14:27 64Kb

Source: Kerlink IoT station page | LoRa | Semtech

Posted in *nix, IoT Internet of Things, LoRa - Long Range wireless communications network, Network-and-equipment, Power User, Uncategorized | Leave a Comment »