LoRa bitrate calculator and understanding LoRa parameters
It can be pretty useful to know how LoRa parameters influence data rate and range, for example when configuring your RNode. In this post I’ll go over the basic concepts needed to understand the ...
Introducing OpenModem
Today, I am very happy to announce the availability of OpenModem, the successor to the popular MicroModem project. Six years ago, I started work on the MicroModem project, and it has since matured int...
Site Updated
I just finished rebuilding the unsigned.io website and shop on a new, fresh WordPress installation. The website had existed in it’s previous form for more than 5 years, which meant the original ...
More I/O for RNode
You asked for it, here it is! RNodes are now shipping with more I/O options. There’s now a total of 17 multi-purpose pins available on the RNode board. Have a look at the following diagram for a...
RNode Firmware Update 1.09
This is an important one! I found a bug on version 1.08 that could cause packets to get dropped on some occasions, if the packet queue was filled in certain way. The problem is only present on version...
LoRa packet sniffing with RNode
In the last post, we looked at creating a 15.75 kilometre SSH link with two RNodes acting as wireless network cards. Today, we’re going to be a bit more passive. Using just a single RNode, we...
IP over LoRa: Using RNode as a wireless NIC
IP over LoRa? Absolutely! While LoRa was not as such designed as an underlying physical layer for IP-based communications, it’s still possible to do exactly that....
15 kilometre LoRa SSH link with RNode
In the last post, I looked at running APRS over LoRa using two RNodes. APRS is a relatively simple application, where data is mostly flowing from mobile stations, beaconing their position to fixed sta...