PandwaRF, is a portable low-power RF device that captures, analyses and re-transmits RF signals via an Android device or a Linux PC. It uses Bluetooth (BLE) or USB connection to transmit data in a simple and fast way, comes in the form of a controllable housing from a smartphone or a computer. This pocket-size device operates at sub-1 GHz range, and it replaced the ‘standard SDR Grind’ of capturing, demodul ...

Author: Maurizio Di Paolo Emilio A tyre pressure monitoring system (TPMS) aims to monitor air pressure on various automotive systems. The most common TPMS sensors mainly use sub-GHz radio standards to transfer information to the vehicle’s computer. There are two different types: direct (dTPMS) and indirect (iTPMS). The use of bluetooth low energy (BLE) connectivity makes it possible offering a high performa ...

Historically, getting files on to a microcontroller device was a fraught process. You might have found yourself placing image data manually into arrays in code, or perhaps repeatedly swapping SD cards in and out. For select Arduino boards, that’s no longer a problem – thanks to the new TinyUSB library from Adafruit (Youtube link, embedded below). The library is available on Github, and is compatible with SA ...

Jubilee Hills: Alzheimer's disease can be tough on caregivers, especially when difficult behaviours like aggression or wandering occur. Alzheimer's is the most common cause of dementia, a general term for memory loss and other cognitive abilities serious enough to interfere with daily life. Caregivers of Alzheimer's patients may find their loved ones acting in unfamiliar, even disturbing or violent ways. Ca ...

The American manufacturer of analog and mixed-signal integrated circuits, Maxim Integrated, has developed a new serial EEPROM memory that operates from single-contact 1-wire interface. The DS28EC20 is a 20480-bit, 1-Wire® EEPROM organized as 80 memory pages of 256 bits each. An additional page is set aside for control functions. Data is written to a 32-byte scratchpad, verified, and then copied to the EEPRO ...

The “ESP8266 OLED SSD1306″ is an open source library which allows you to control those pretty OLED modules from our beloved ESP8266 module. Fabrice Weinberg cleaned up all the ugly pieces of code which I initially wrote caused by my near C/C++ illiteracy. He also added support for Pasko’s BRZO I2C library which is partially written in assembler and allows a much higher throughput over the I2C channel. Fabri ...

The current memory landscape spans from venerable DRAM to hard disk drives to ubiquitous flash. But in the last several years PCM has attracted the industry's attention as a potential universal memory technology based on its combination of read/write speed, endurance, non-volatility and density. For example, PCM doesn't lose data when powered off, unlike DRAM, and the technology can endure at least 10 milli ...

With this tutorial, you will learn how to get the weather data from a web service to your Arduino. Things used in this project Hardware components Arduino MKR1000 × 1 Story In this tutorial we would make use of the WiFiConnection of our mkr1000. We will get weather forecast of and activate the relay, connected to the water pump, only if there is no rain at the horizon. Connect to the openWeatherMap API we w ...

Attendance systems are commonly used systems to mark the presence in offices and schools. From  manually marking the attendance in attendance registers to using high-tech applications and biometric systems, these systems have improved significantly. In our previous projects, we have covered few other electronic attendance system projects using RFID and AVR microcontroller, 8051 and raspberry Pi. In this pro ...

Purpose and concept The  "LayoutLights" concept was born when I wanted to remotely control (using a PC with a USB port)  the lights on the train layout. I wanted to be able to switch on and off all the lights in buildings, structures and on platforms, streets and  other locations.The basic principle is simple : * one master controller has  a USB interfact to the PC * the master can control up to 15 slaves, ...

This light control box allows you to control up to 8 channels of mains power, which can be used to rutn on/off light elements or groups. The purpose in my layout is to control LED spotlights  (GU10 on 220V AC)  that highlight specific sections in my layout. You can use this to control other elements than light , too.  But you may need to upgrade the relays or use optocouplers and Triacs, then. The reason th ...

If you’re a fan of the Harry Potter series then we also bet you were pretty taken with Hogwarts headmaster Dumbledore’s pensive—the magical object that could not only store memories, but actually let people fall into and re-experience the events. This week’s Instructables How-To from aspiring Tel Aviv-based hacker and inventor, Zvizvi, shows you how to make a box that stores audible memories, though the imm ...