Ray Wang wrote a blog post review of the Hi-Link HLK-RM04 Serial-to-WiFi module: It’s a pretty easy-to-use and low-cost solution to add WiFi capability to Arduino or similar microcontroller boards. Basically it allows you to receive/send Ethernet buffers through serial RX/TX pins. Programming wise, it’s similar to using the standard Arduino Ethernet shield. The module can […]
Category Archives: wireless
DEFCON 22: WarKitteh – cat on the warprowl
Why do the wardriving yourself when your cat can do it for you? Gene Bransfield gave this presentation at the recent DEFCON 22 conference, describing his efforts to use domestic pets wearing WiFi sniffer/GPS logging gear to essentially warprowl for WiFi hotspots. There’s also DoSdog, a standard pooch wearing a backpack concealing a Hak5 Pineapple, […]
Wireless ADC to relay example
Ondřej Karas of DoItWireless writes: Sometimes, you need to measure analog signal and then switch something on or off according to the result. This short example shows, how to do it. Everything you need is DDC-SE-01 module as a sensor module and DDC-RE-01 as relay module. Of course you need DK-EVAL-04 or CK-USB-04 for both of […]
Reverse engineering a wireless soil moisture sensor
Ray Wang at Rayshobby has been working on reverse engineering a wireless soil moisture sensor. He writes, “At the Maker Faire this year I got lots of questions about soil moisture, which I knew little about. Recently I started learning about how to build my own soil sensor, and came across this cheap 433MHz wirelss […]
Temperature and humidity measurement with DHT11
Ondrej Karas of DoItWireless writes: This article describes temperature and humidity measurement with DHT11 sensor connected to TR module. Circuit diagram is very simple. You need only power supply for sensor and one wire for data line. This line has to be “pull-uped” – sensor has open colector output.
Garage door signal hacking using RTL-SDR and TI Chronos watch
Students Ido Livneh and Gil Freidlin from Tel Aviv University have been experimenting with garage door opener signals using the TI Chronos watch and RTL-SDR dongle. Their technique involves using the SDR along with HDSDR software to acquire and record the signal, which is then analyzed using Python based tools and encoded for loading onto […]
Hack adds Bluetooth control to old iPod using Android and Arduino
The crew at Erroneous Data presents this tutorial detailing how to wirelessly control an old iPod music player with you Android device. Using only an Arduino, an HC-05 Bluetooth module and a few resistors they show how to build your very own MuseHack. The project includes the Arduino code as well as the Android app […]
BlueMatrix – Bluetooth controlled LED matrix
Luca Dentella has published his latest project: BlueMatrix. It’s a portable LED matrix display based on Arduino Uno, powered by a Lipo battery and connected via Bluetooth to a personal computer or an Android smartphone. I’ve also developed the controlling app for Android, available on Google’s PlayStore. All the schematics, source files, inkscape files for […]
Tutorial: Android and Bluetooth
Luca Dentella has published the last part of his tutorial explaining how to develop Android applications that “talk” with embedded devices using Bluetooth. The tutorial covers basic tasks like enabling/disabling the phone’s Bluetooth adapter to advanced ones like using separate threads for blocking I/O operations. Further information and earlier tutorial segements can be found on […]
Reverse engineer wireless temperature / humidity / rain sensors, part 1
Ray Wang writes: I just wrote a series of three posts about how I reverse engineered a few off-the-shelf wireless temperature, humidity sensors and rain gauge, and used an Arduino to listen to and decode the sensor data. The tools involved are quite simple: an Arduino and a 433MHz RF receiver. I also used a […]
Hak5 video: quadcopter with WiFi enabled Linux computer and RTL-SDR
What happens when you send up a quadcopter equipped with a Linux box, WiFi and an RTL-SDR dongle? Darren and company from Hak5 decided to find out. Their project used the SDR to receive ADS-B signals from aircraft hundreds of miles away. The Hak5 team took a quadcopter up on top of a high mountain, […]
Video: using NRF24L01+ wireless module with Arduino
The NRF24L01+ is a popular wireless communications module from Nordic that interfaces well with MCU applications. In this detailed video tutorial, Kevin Darrah outlines how to use it with the Arduino. Source code is available from Kevin Darrah’s website.
BeagleBone Black and MSP430 based Wireless Sensing
Chirag Nagpal created prototype of a Wireless sensing system using MSP430, BeagleBone Black and XBee: I have developed a Wireless Sensing System using an MSP430 microcontroller based node, powered by 2 AA batteries, relaying data to a BeagleBone Black using XBee. The BeagleBone is then hosting a javascript based webpage graphing these values using processing.js. The […]
Dissertation: security analysis of contactless payment cards
Here’s an interesting academic document we found related to hardware hacking. In this published doctoral dissertation, Timo Kasper from the Ruhr-University Bochum, Germany, presents in detail his efforts in analyzing the security of Mifare smart cards. “The tools are first employed for analyzing a contactless payment application, which is based on Mifare Classic technology, with […]
Magic Mote wireless sensor v2
Tom posted an update on his Magic Mote wireless sensor we covered previously: Here is Version 2 of the Magic Mote PCB. The tactile switch is more accessible at the side of the board, the programming/serial header is now IDC6 compatible, and there is improved isolation of the ground plane under the watch crystal.
RTLAMR: an RTL-SDR receiver for 900 MHz smart meters
It never ceases to amaze how many projects are developed making use of the RTL-SDR dongle. Bemasher has developed a software tool which interprets the signals in the 900 MHz ISM band sent from smart electric meters which are growing in popularity among utility companies. This project is a proof of concept software defined radio […]
Mailbox wireless alert project
If you are waiting for some electronic parts to be delivered the wait can be agony. It is especially painful when you learn your parts which you desperately need have been sitting in your mailbox for most of the day because the mailman came early… This problem is solved by this Mailbox Wireless Alert Project. Re-purposing […]
BLE fun with Ubertooth: sniffing Bluetooth Smart and cracking its crypto
Mike Ryan writes about his latest efforts in BLE hacking. Hot on the heels of Omri Iluz’s BLE-sniffer-on-the-cheap, I decided to write up the BLE sniffer I built on Ubertooth. My sniffer highly robust, can capture data from connections, and is 100% open source. I also discovered a vulnerability in BLE’s crypto that allows me […]
Sniffing and decoding NRF24L01+ and bluetooth LE packets for under $30
Omri writes: In this long post I am going to describe my journey to sniff and decode popular digital wireless protocols off the air for very cheap. So cheap practicality anyone can obtain the equipment quickly. I was able to decode NRF24L01+ and Bluetooth Low Energy protocols using RTL-SDR. As far as I can see, […]
Online tool and AT commands for M2M modules
Surya writes with this reference to a guide for a tool an Online AT Command Tester for use with an attached wireless/cellular module. This topic refers to Machine to Machine (M2M) device communications which take AT commands over serial connections. The tool was developed with the M10 Quectel Arduino GSM shield in mind. Via the […]