Month: August 2015

Arduino Controlled Spectrum Analyzer for Ham Radio

As a Ham, of course I want to be able to examine frequencies, and the strength of the signal on that frequency. So imagine my excitement when I found the following Arduino solution! The Specan is actually a very simple but robustly built receiver. it is, in essence, a double conversion superhet receiver with 112 …

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Arduino / MySQL Connector Improvements

There have been some exciting improvements in the Arduino direct to MySQL communications. As a recap, this library allows a Arduino Ethernet or WiFi shield enabled Arduino to directly make SQL INSERT, DELETE, UPDATE, and SELECT queries, no intermediary code or web server. The big news is the documentation has been greatly improved. Get the …

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Measuring Wind Speed with an Arduino / Anemometer

A while back, we got a set of weather sensors from Sparkfun. It includes a Anemometer (speed), Wind Vane (direction), and a Rain Gauge. I used a hand held wind speed device to calibrate my Arduino code. I’m using pinMode(2, INPUT_PULLUP); so no pull up or pull down resistor is needed. I used a prototype dual …

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