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Repeater Control Systems

Site Monitoring and Control Systems

Station Accessories

HamStack Project Gallery

Robert, KJ6HFR, has put together 40 PWM examples for 18F4620 and ‘k22 CPUs written in Swordfish Basic.  These examples were developed on the HamStack Development Board (DEV-1).

Pulse Width Mod PWM

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Beric Dunn, K6BEZ, designed a handy antenna analyzer prototyped on a HamStack DEV board and ported to an embedded PIC and another version on an Arduino.

Presented at Pacificon 2013.

Antenna Analyzer

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John, KJ6K, is designing an open source keyer project written in Microchip C18 C language compiler for the HamStack.  The video shows some basics of the multi-tasking capability of the HamStack software stack.

CW Keyer Prototype

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This DTMF decoder is built using the Project Board with the built in 8870 DTMF decoder chip and HamStack CPU board.

Project Board DTMF

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This project uses the 8 relay GPIO board and a new prototype control head.  The Control head lets you select any one of 8 antennas with the push of a button.  Status is displayed on the LCD.

Antenna Controller

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These projects are all built with the HamStack microcontroller platform.  Some projects are built entirely from off-the-shelf HamStack kits, some have additional customized hardware.  If you build an interesting project, we would like to show it off here.

This mini-project shows how to use a mechanical rotary quadrature encoder as an input device to indicate left or right knob rotation.  The example is written in Swordfish Basic.

Rotary Encoder

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Today’s digital electronic compass’ can be interfaced to a HamStack CPU board and used for a variety of ham radio projects including accurate antenna direction measurements.

Digital Compass

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Robert, KJ6HFR, made some very nice prototype breadboards based on the HamStack CPU. Check out these cool YouTube videos !

Breadboard video #1

Breadboard video #2

KJ6HFR’s Breadboards

Robert, KJ6HFR, has written up a great reference document based on his experience with the PIC 18F4620 CPU used on the HamStack CPU board.  Download the PDF and check it out.

See the You Tube video.

Breadboard video #2

18F4620 CookBook


Frank, N6YP, developed a great repeater site temperature monitoring system using our GPIO board and digital temperature sensors.  The system keeps track of 3 repeaters and displays the status on a 4 line LCD.

N6YP’s Temp Control

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This CW/PSK keyboard project is featured in the June 2012 issue of CQ magazine.  The HamStack project uses a PS2 keyboard to send CW & PSK to an Elecraft K3 or KX3 radio and provides rig control through the serial port.

CW/PSK K3 Keyboard

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This article by Bruce, W1GQ, shows how he used a HamStack and GPIO board to remotely switch stacked Yagi antennas for his contest station.

Download the article here.

W1GQ Yagi Switching


John has been working on a GPS satellite-based clock synchronization project.  The HamStack reads the time from the GPS receiver and displays the time.

GPS-Based Clock


Brian, W6BY, demonstrates ham radio homebrew projects at the Maker Faire.  Brian is adding HamStack smarts to his microwave station.  This YouTube video shows the HamStack CPU, CW Keyboard app and the GPIO board controlled by an iPhone.

W6BY’s Maker Demo


Robert, KJ6HFR, shot a very handy video showing how a HamStack can perform high / low voltage detection. Check it out on You Tube.  In this example, an interrupt request flag is set when voltage to HamStack board falls below 2.8 volts.

Low Voltage Detect


KJ6HFR’s video companion to his HamStack cookbook.  Many experiments are done without compiling any code. Instead, the Configuration Editor in the PICkit2 application is used to set chip configurations, such as oscillators and Watch-Dog Timer.

‘4620 CookBook Video


W1GQ designed this high power dummy load with an embedded HamStack CPU and relay board.

A digital sensor monitors the load temperature and controls the two cooling fans and an over-temp alarm.  Front panel LCD shows the temperature.

Smart Dummy Load

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This project uses the 8870 DTMF decoder chip circuit built on a HamStack prototype board.  As tones are decoded, the ASCII character is sent to the serial port. The firmware is written in Swordfish Basic.

DTMF Decoder

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