Public wifi firewall...

Raspberry pi plus 2 wifi cards...

Hf radio build.

Father's Day present was a 20m hf radio kit.

http://www.ozqrp.com/MST2index.html

And now the housing hardware is on order and I am starting to design a tuner for the device...

Proceeding to box it up after the hardware arrived...

It's not easy to cut square holes with a Dremel.

But the power up test blows fuses.  That's odd.   After digging around my irf510 power fet has essentially zero resistance between drain and body and I had grounded it to the frame..

 Insulating washers and now the calibration process...

Now to wait for a microphone to be delivered...

Well apparently also replacing the irf510 that didn't like being shorted to the case.

Aligned and finished.  5 watts of power.

Dsi Xl screen repair

All done

Aprs tracker

A few discrete components

An arduino

A gps

A display

And a radio and poof, an Aprs tracker

http://aprs.fi/#!call=a%2FKG7LCN-1&timerange=3600&tail=3600

Then a ferrite choke for reflected rf 

Adjustment of the signal

A better antenna 

And... Off to the races

 https://github.com/jweers1/Aprs-Tracker

Everything is on github..

Desktop Clock

It uses a DS1821 temp sensor.

An inexpensive display, atmega 328p, RTC module and an oscillator.

And what project would be complete without ugly wiring on the back...

Bare bones Arduino

Arduino Uno Minimal circuit

Temperature sensor put together

Temperature sensor after assembly