Tag Archives: ham

Tontec 480×320 touchscreen display with Raspberry Pi

Posted on 2016/05/27 by rob

Last December, I purchased a Tontec 480×320 touchscreen display for use with a Raspberry Pi.  Complete with case (amazon link).  I bought it along with a Raspberry Pi Model B in order to play with software-defined radio (SDR), motivated by … Continue reading →

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Serial communication with a Kenwood TS-570D

Posted on 2016/03/31 by rob

I am setting up an amateur radio station at my local maker space, Decatur Makers.  Our transceiver is a Kenwood TS-570D. I have spent a lot of time debugging how to get serial communications working between the Kenwood and a … Continue reading →

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KX3 as a (good enough) antenna analyzer

Posted on 2016/02/08 by rob

So I am working on a DIY antenna analyzer/impedance meter.  But I need to validate my design against a known antenna analyzer.  I do not own one. But I do — my Elecraft KX3 can calculate SWR.  If you know … Continue reading →

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Arduino + AD9850 DDS

Posted on 2015/11/16 by rob

I’ve been playing with connecting an Arduino to an AD9850 DDS waveform generator. This is a DDS chip from Analog Devices that is capable of outputting a sine or square wave at frequencies up to 40 MHz. There are two … Continue reading →

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20×4 LCD display tips — on an Arduino Nano

Posted on 2015/08/23 by rob

Using a blog for debugging notes so I can easily refer to it. LCD displays are quite common for Arduino applications.  I have purchased a 20×4 white on blue backlit display.  Most LCD displays on Arduino are based on a … Continue reading →

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