Over on the Spectrum web site, [Dale] — a relatively new ham radio operator — talks about his system for sending text messaging over VHF radios called HamMessenger. Of course, hams send messages all the time using a variety of protocols, but [Dale] wanted a self-contained and portable unit with a keyboard, screen, and a GPS […]
ARDUINO + HAM RADIO = TEXTING Continue Reading
A magnetometer is an electronic device capable of measuring magnetic fields or magnetic dipole moment. Magnetometers are widely used for measuring the Earth’s magnetic field, in geophysical surveys, to detect magnetic anomalies of various types. If you fancy building your very own DIY magnetometer you may be interested in a Arduino project published to the Instructables website by maker Markus Opitz. His
Discover hidden treasures using a DIY magnetometer Continue Reading
Hey, what’s up, Guys! Akarsh here from CETech. GPS-based location tracking is one of the very important services nowadays. We use this to find a path to our destination and also track the position of our goods using this. But have you ever heard of location tracking without using GPS? Today we are going to discuss
BLE & LoRa Based Indoor Location Tracker Without GPS Continue Reading
XYNX (pronounced ikz-sync) is being launched on Crowdsupply by Fairwaves. it is based on the success of the Octopack SDR (software-defined radio) and the feedback the firm received from the original Octopack users. It is designed for situations or use cases that involve large band of spectrum monitoring or massive MIMO system and it comes
THE ULTIMATE LOW-COST MASSIVE MIMO SDR, WITH UP TO 32×32 TRANSMIT/RECEIVE CHANNELS Continue Reading
In this post I’m going to write about my experiments with interfacing a low-cost serial GPS module directly to uLisp, to create projects such as a GPS clock: I’ll also describe a GPS speedometer and odometer, and a simple navigator, in later posts. The module I used is the GP-20U7, a small GPS module available
GPS CLOCK USING ULISP Continue Reading
A recent tour of an old WWII-era aircraft carrier reminded us how hard navigation was before the advent of GPS. It used to be the work of skilled people to sight the sun or the stars and use giant books to figure out a vessel’s position. Now you just ask your phone to listen to
LAWNMOWER DOESN’T NEED A BASE STATION Continue Reading
Argos is a satellite-based system that collects, processes, and disseminates environmental data from fixed and mobile platforms worldwide. What makes Argos unique is the ability to geographically locate the source of the data anywhere on the Earth utilizing the Doppler effect. The Argos system itself comprises of six satellites, which follow polar orbits at an altitude of about 850km (530
ARRIBADA HORIZON PLATFORM – AN OPEN SOURCE BASED ARGOS TRANSMITTER. Continue Reading
This is a bicycle journey recording device utilizing Arduino and a GPS module. I’m riding an electrical bicycle from time to time during weekends. Several good bicycle riding routes which pass by the lakes and parks are located near to my house. Therefore, bicycle riding become a favorite personal pastime recently. For planning the next
Bicycle Journey Tracker With Arduino and GPS Module Continue Reading
Robotic fish is a biomimicking of a real-world fish being developed with a view to enable surface level cleaning of water bodies. Introduction Robotic fish is a biomimicking of a real-world fish being developed with a view to enable surface level cleaning of water bodies. The fish monitors the pH levels of the water that
PATROL FISH TO COLLECT AND CHECK THE CONTAMINATION OF A WATER BODY Continue Reading
The Garmin HUD+ was a small Bluetooth device intended for the dashboard of a car, meant to be used as a GPS heads-up display for data from Garmin smartphone apps. It used a bright VFD (vacuum fluorescent display) which was viewed through a clear reflector, and displayed GPS information and directions. It was discontinued in
GARMIN HUD GOT DISCONTINUED, BUT NOT TRASHED Continue Reading
