Make A GPS Antenna Compatible With Same Manufacturer’s Receiver

GPS can be a bit complex of a technology – you have to receive a signal below the noise floor, do quite a bit of math that relies on quantum mechanics, and, adding insult to injury, you also …

Crash IoT Devices Through Protocol Fuzzing

IoT protocols are a relatively unexplored field compared to most PC-exposed protocols – it’s bothersome to need a whole radio setup before you can tinker on something, and often, for lo…

PCB Design Review: ESP32-S3 Round LCD Board

For our next installment, I have a lovely and daring PCB submitted by one of our readers, [Vas]. This is an ESP32-S3 board that also has an onboard round TFT display, very similar to the one we use…

Wireless All The Things!

Neither Tom Nardi nor I are exactly young anymore, and we can both remember a time when joysticks were actually connected with wires to the computer or console, for instance. Back then, even though…

Benchmarking Latency Across Common Wireless Links For MCUs

Although factors like bandwidth, power usage, and the number of (kilo)meters reach are important considerations with wireless communication for microcontrollers, latency should be another important…

Garden Light Turned Mesh Network Node

We love a good deal, especially when it comes to scavenging parts for projects. Cheap outdoor solar lights are more than just garden accessories; they’re a handy source of waterproof enclosur…

Reverse-Engineering The ESP32’s WiFi Binary Blob With A Faraday Cage

As part of a team reverse-engineering the binary blob driver for the ESP32’s WiFi feature at Ghent University, [Jasper Devreker] saw himself faced with the need to better isolate the network …

Faking Bluetooth LE With An NRF24L01+ Module

Despite the name, Bluetooth Low Energy (BLE) has very little to do with the original Bluetooth, other than its use of the same 2.4 GHz frequencies. This is where [Dmitry] got the idea to use a 2.4 …

802.11ah Wi-Fi HaLOW: The 1 Kilometer WiFi Standard

The 802.11ah WiFi (HaLow) standard is fairly new, having only been introduced in 2017. It’s supposed to fall somewhere between standard WiFi used in domiciles and offices and the longer range…

Hacking BLE To Liberate Your Exercise Equipment

It’s a story we’ve heard many times before: if you want to get your data from the Domyos EL500 elliptical trainer, you need to use a proprietary smartphone application that talks to the…

Converting Bluetooth Sensors To Zigbee

With the increase in popularity of Internet of Things (IoT) devices and their need to communicate wirelessly,  there’s been a corresponding explosion of wireless protocols to chose from. Of c…

Wi-Fi 7: The Next Big Leap Or A Whole Lotta Nothing?

For most people, the Wi-Fi hardware of today provides a perfectly satisfactory user experience. However, technology is ever-evolving, and as always, the next advancement is already around the corne…

Weather Station With Distributed Sensors

Building a weather station is a fairly common project that plenty of us have taken on, and for good reason. They can be built around virtually any microcontroller or full-scale computer, can have a…

Meshtastic For The Greater Good

Last week, my city was hit by a tornado. That’s not surprising here in Oklahoma, and thankfully this event was an F0 or possibly even an EF0 — a really weak tornado. Only a couple roofs…

Hacking A “Smart” Electric Toothbrush To Reset Its Usage Counter

Following the trend of stuffing more electronics in everyday devices, the new Philips Sonicare electric toothbrush that [Cyrill Künzi] purchased ended up having a ‘brush head replacement remi…

Headset’s Poor Range Fixed By Replacing Antenna

[rafii6312]’s Corsair HS80 wireless headset had a big problem: short range. The sound quality was great, but the wireless range wasn’t winning any friends. Fortunately, the solution was…

Nokia N-Gage QD Becomes Universal Bluetooth Gamepad

The Nokia N-Gage might not have put up much of a fight against Nintendo’s handheld dynasty, but you can’t say it didn’t have some pretty impressive technology for the time. [Beard…

Rickrolling SSID With ESP32

Reddit user [nomoreimfull] posted code for a dynamic WiFi beacon to r/arduino.  The simple, but clever, sketch is preloaded with some rather familiar lyrics and is configured to Rickroll wireless L…

Wireless Charging On A Massive Scale

Despite the increasing popularity of various electric vehicles, the limits of battery technology continue to be a bottleneck in their day-to-day use. They don’t behave well in extreme tempera…

Electromagnetic Mechanism Makes Reconfigurable Antenna

Antennas are a key component to any RF gadget. But antennas often only perform well over a narrow band of frequencies. For some applications, this is acceptable, but often you would like to reconfi…