Blog

Getting started to Bluetooth Mesh with Nordic Semiconductor SDK

2026-04-08T11:40:24Z

I have worked quite a lot with BLE. But it was until last week that I did not get any exposure to Bluetooth mesh network. Till now I just managed to flash mesh sample to Nordic Semiconductor development kits and test the basic ON/OFF switch and light...(read more)

MSi chips based hardware

2024-07-02T15:43:39Z

I am trying to identify "most reliable HARDWARE" based on MSi chips. ( clone brand name would be OK ) I am NOT asking about software.... I am NOT concerned about PCB format - USB dongle or real PCB. I would prefer single a...(read more)

Pre-GPS: Hyperbolic Radio Navigation Systems and the Decca Navigator

2024-06-10T00:43:25Z

Table of Contents Introduction Longitude and Time-keeping Hyperbolic Radio Navigation Pulses: Gee System (QH) Phase: Decca Navigation (QM) Decca Yacht Navigator Teardown Summary Further Reading Introduction While working on a GPS project &n...(read more)

Researchers Develop Innovative Signal Curving Technology for Future 6G Networks

2024-06-04T19:20:46Z

Curving terahertz signals could become the future of 6G data transfer. (Image Credit: the Mittleman Group) Future 6G networks may rely on photon curving, rather than a line of sight between the receiver and transmitter, to transmit signals. Rice Uni...(read more)

First-Ever 60 Ghz Mmwave Developed for Ultra=Fast Data Transfer

2024-04-26T18:24:52Z

The first-ever 60 GHz DMA could be used for future 6G network communications. (Image Credit: University of Glasgow) Now that 5G is being deployed worldwide, efforts have shifted toward creating the next-gen communication tech. University of Glasgow ...(read more)

Software Defined Radio: Experimenting with the MSI-SDR M1

2024-01-17T16:13:40Z

Table of Contents Introduction Is the Device any Good? Background System Overview Building the Software on Windows Driver A First Test Summary Introduction The MSI-SDR M1 is a very low-cost Software Defined Radio (SDR) that appears to be an open ...(read more)

NASA Transmits a Laser Beam From 10 million Miles

2023-12-01T19:44:40Z

The DOSC flight laser transceiver aboard the Psyche spacecraft beamed a laser message from 10 million miles, reaching Earth in 50 seconds. (Image CreditL NASA/JPL-Caltech) On November 14th, NASA transmitted data to Earth via a laser from ten million...(read more)

Flaky Home WiFi. Ditch ISP equipment? 2.5 vs 5 GHz?

2023-10-27T03:55:07Z

Hi all, I'm hoping someone will have some insights or experience with home WiFi that might give me some direction. TL;DR, aka Cliff Notes, aka Summary: My network is flaky. I need to reboot it every few days. My ISP upgraded all of my hardware a mon...(read more)

Working with SV Microwave Solderless Compression Connectors for RF PCBs: Part 2

2023-03-07T01:28:06Z

Introduction This blog post is about RF SMA connectors that, as the title suggests, are not soldered onto circuit boards; they are screw-fit! I wish I had known about these connectors when I built up a component analyzer testbed (photo further below...(read more)

Working with SV Microwave Solderless Compression Connectors for RF PCBs

2023-01-26T15:15:05Z

Table of Contents Introduction RF Signal Delivery using Transmission Lines PCB and Layers Selection Transmission Line Calculations PCB Layout Elements Connector Footprint PCB Layout What’s Next? Introduction The interfacing to circuits that...(read more)

Blues Wireless Notecard - Advanced Configuration - GPIO

2022-12-23T22:14:59Z

I've been playing with Cellular IoT this year. I did a project with the Nordic Thingy:91 back in May - Thingy91 Dog Tracker to use GPS to record walks with my granddog. And even earlier in the year I wrote a post when I started using ...(read more)

Do I Need a New Router when I Upgrade to Wi-Fi 6?

2022-12-22T18:14:56Z

Wi-Fi 6 (aka IEEE 802.11ax) is the latest iteration of the Wi-Fi network protocol. It is a significant upgrade over its predecessor 802.11ac (retroactively renamed Wi-Fi 5). This advanced network protocol allows for faster connection speeds with impr...(read more)

The MAX32666FTHR and My Introduction to Bluetooth

2022-10-29T16:45:00Z

Introduction Learning about Bluetooth has been on my to do list for quite some time, but up until now I haven't been very good about setting the time aside to pursue this endeavor. Recently I participated in the IO Link quiz and as luck would have it...(read more)

Getting Medieval with Bluetooth for a Car Diagnostics Interface

2022-09-23T19:31:00Z

I was recently given a circuit board for a car diagnostics tool (also perhaps known as a vehicle communication interface or VCI) to repair. It is used to attach to vehicle diagnostic connectors like OBD-II so that a PC can be used to interrogate...(read more)

RAK Wireless WisBlock Starter Kit

2022-04-29T21:43:00Z

Many wireless transceivers are now available as pluggable modules using high density connectors like the M.2 edge connector or plug and socket board-to-board connectors. This provides to implement custom PCBs where you can quickly add or custom...(read more)