Construction projects
The ham clock made from a Raspberry Pi.
Most of these projects use either the Raspberry Pi or Arduino.
The Pi is a small Linux computer and the Arduino is a programmable controller.
The ham clock manual.
How to construct a ham clock
K3NG rotator controller made from Raspberry pi.
The original controller broke down so I turned it into a K3NG controller
The innards of the controller
The SVEN Nixie clock.
Nixie is an ancient vacuume valve display used before LCD was invented.
It is an irony that this project has programmable LEDS and a GPS module that keeps it on time. Technology that didn't exist in the Nixie era.
Here is the GPS module.
The SVEN Nixie clock.
My portable hot spot.
This Raspberry Pi hot spot is mostly running on selected talk groups: Brandmeister, TGIF and VKDMR.
It runs APRS through Brandmeister.
The hot spot operates through my phone in hot spot mode. APRS and DMR is achieved using an Anytone 878.
My shack Rasperry Pi hot spot.
The Raspberry Pi that drives FT8 and WSPR into the Xeigu G90 HF radio.
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The Icom IC-28a transceiver.
This transceiver was bought at a hamfest and developed a faulty volume potentiometer.
I replaced that with a Jaycar 10K 9mm pot that fitted fine. It now serves as my APRS transceiver.
The box contains the Fritzing PTT circuit, mentioned above, driven from a Raspberry Pi by Direwolf.
The 70cm repeater with echolink and fan drive.
A Raspberry Pi drives the controls and Echolink, an Arduino operates the cooling fans.
The internal wiring of the repeater
The Pi repeater control module manual
The Shure 55SH series 2 'Elvis' microphone.
This microphone originally had a dynamic insert that picked up the DMR and caused 'motorboating' on the audio.
I replaced that with a Jaycar electret microphone amplifier.
The big golden ring in the background is a 1928 speaker I found in a farmer's shed.
The bicycle flux capacitor.
This home made flux capacitor is driven by an Arduino nano.
It is made from translucent packing foam inside clear tube with milk container tops on the end.
The flux capacitor Arduino sketch