NEMA 17 & 23 Stepper Motors

The first part of my auto-point satellite antenna (RoboSat Project) is to get some stepper motors that can be controlled by an Arduino UNO. I decided to use stepper motors for their accuracy and are readily available being used in many 3D printers and CNC machines. The knowledge base, open source code and help available […]

Net Analyzer iPhone App

There are so many apps these days for Tech stuff! I find this App useful for troubleshoot networks on my iPhone. Net Analyzer Lite version 6.3.1 by Jiri Techet This App is the free version of the Network Analyzer Pro. It offers many features of it’s paid brother but with Ads at the bottom of […]

ECOFLEX 15 N-Type Termination

ECOFLEX 15 is a very flexible 50Ω low loss coax cable that can operate between DC and 6GHz in frequency. This tech tinkering post is a review and a quick how t’ terminate the ECOFLEX 15 coax with N-Type connectors (Art.-Nr. 7395 N-plug, male, solderless). Ecoflex 15 Specs Diameter: 14.6 mm Impedance: 50 Ohm Attenuation @ […]

Auto-Acquire VSAT Satellite Dish

Over the next few months I’ll be updating the Tech Blog with my latest project(s) – an auto-acquire satellite antenna. Theses types of antenna seem very expensive, some in excess of $70K so I thought it would be a good project to see if I could make my own using inexpensive parts bought on-line. The […]

Frequency and Wavelength Calculation

Frequency Wavelength Calculator Frequency (f): MHz Calculate Frequency Wavelength: m Electromagnetic (EM) waves travel through space (a vacuum or free space) at the speed of light at approx. 2.99792 x 10^8 m/s. The speed of light is often rounded up for ease of calculation to 3.00 x 10^8 m/s. The wavelength of an electromagnetic wave […]

WiFi RF Scanning

Most people these days connect to the internet by a Wireless Access Point (WAP) in their home or business. Its very convenient without the hassle of Ethernet cables and you can connect many devices like your smart phone, laptops and I even have my TV connected to the same access point. WiFi works at the […]

USB Power Meter Review

This is a little USB detector that I recently purchased from eBay for less than $10 which included free postage from China. The USB power meter reads Voltage(V) with a stated accuracy of 1%, Current(I) with an accuracy of 0.4%, Power(W) down to 3 decimal places and the  Capacity(C). Specification Voltage range: 3-10V (accuracy: 1% ) […]

Ping Commands

What is a Network Ping? The ping command is a Command Prompt command utility used to test the ability of the source computer to reach a specified destination either on the same network or the internet. The ping command is usually used as a simple way verify that a computer can communicate over the network […]

Radiation Monitoring Network

  The uRADMonitor is a project to monitor background radiation levels around the world. Inside the small black enclosure is a calibrated Geiger Muller tube that samples the local radiation level and sends the data back to the central server along with temperature, tube voltage and lots more. The information is sent once a minute […]

Tips on how to Prolong Li-ion Batteries in Smartphones or Laptops

There is a lot of information about extending the charge of your smartphones on the internet by turning off unused features like Bluetooth etc. but there is very little information about making sure the Li-ion batteries in your tech gadgets are charged correctly and how to look after them. Having recently bought a new iPhone 6 […]