Intro to LoRa Mesh Part 1: What are Meshtastic and MeshCore? | DigiKey

In this series, we explore LoRa mesh networking with Meshtastic and MeshCore, two open-source projects that let you send encrypted text messages and sensor data over several kilometers without cell service, Wi-Fi, or a satellite subscription. Over six episodes, we'll flash and configure nodes for both protocols, build a solar-powered repeater to extend the network's range, connect a sensor to a Meshtastic node to transmit telemetry, and finally bridge the mesh to a Home Assistant server over MQTT so you can log and visualize that data. If you've been hearing buzz about these protocols but don't know where to start, this series is for you. To follow along with the series, you will need the following hardware: SenseCAP Card Tracker T1000-E: https://www.digikey.com/en/products/d... XIAO ESP32S3 & Wio-SX1262 Kit: https://www.digikey.com/en/products/d... XIAO nRF52840 & Wio-SX1262 Kit: https://www.digikey.com/en/products/d... SenseCAP Solar Node P1-Pro: https://www.digikey.com/en/products/d... Raspberry Pi 4 or 5 (for Home Assistant in the final episode): https://www.digikey.com/en/products/d... Note that LoRa hardware is region-specific. Check the frequency band for your country before ordering. The United States and most of the Americas use 915 MHz, while Europe uses 433 MHz and 868 MHz. You can read a full write-up of everything we cover in this video here: https://www.digikey.com/en/maker/tuto... This first episode is all background, so if you'd rather jump straight into the hands-on portion, feel free to skip ahead to part 2. We start with LoRa itself: what chirp spread spectrum is, why a chirp can be detected even when it's buried in noise, and why you need to match your antenna to the correct regional frequency band. We then cover mesh networking, including multi-hop routing, self-healing, and the trade-offs that come with having every node rebroadcast on behalf of its neighbors, including added latency, network congestion, and faster battery drain. With that foundation in place, we compare Meshtastic and MeshCore directly. Meshtastic is older, easier to set up, has a much larger community, and supports a range of sensors out of the box, but its managed rebroadcasting can flood congested networks and make delivery acknowledgements unreliable. MeshCore splits devices into companions and dedicated repeaters, and uses routing that learns paths through the network after an initial flood, which cuts traffic, extends battery life on handheld nodes, and makes acknowledgements far more likely to reach you. Neither is strictly better. Meshtastic wins for ad hoc networks on the go, while MeshCore is the stronger choice for building out a stationary city-wide repeater network. We close with hardware recommendations for the rest of the series. In the next episode, we get hands-on: flashing Meshtastic firmware onto the T1000-E and the XIAO kits, connecting over Bluetooth, and sending our first messages across the mesh. Intro to FreeCAD video series:    • Introduction to FreeCAD Part 1: Getting St...   Learn more: Maker.io - https://www.digikey.com/en/maker DigiKey’s Blog – TheCircuit https://www.digikey.com/en/blog Connect with DigiKey on Facebook   / digikey.electronics   And follow us on X: https://x.com/digikey 0:00 Intro 1:07 Syllabus 2:03 What is LoRa? 5:01 What is LoRaWAN? 5:49 Mesh networking basics 7:52 What is Meshtastic? 10:27 What is MeshCore? 12:56 Meshtastic vs. MeshCore 15:40 Hardware recommendations 18:42 Conclusion