KO7M - Ham Radio Blog

The ramblings of one home-brew electronics, firmware engineer and pilot.

Sunday, September 20, 2015

Arduino Satellite/Sun Tracking

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I have put together the recent bits and pieces of test code that I have been playing with to control my AZ/EL servo camera mount and an Ardu...
5 comments:
Sunday, September 13, 2015

Arduino and Servos

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This little project has been lying around waiting to be done for far to long, so I have resurrected it on a rainy Sunday and hope to make so...
3 comments:
Saturday, September 5, 2015

Salmoncon X QSL cards

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July 10-12 this year our QRP ham radio group had our annual camp-out at Valley Camp in North Bend, WA.  We have a lot of fun hanging out tog...
1 comment:

Arduino Experiments with Serial Speed

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I have been having a play around with seeing how much serial speed I can get out of a standard Arduino Uno when it isn't really doing an...
Tuesday, August 18, 2015

Android Phone (Samsung Galaxy Note 4) Power Usage

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I was playing around recently with my Android phone and decided to take a look at it's power consumption when charging from my laptop US...
Sunday, July 26, 2015

Controller check-out

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I have FINALLY found my ISP programmer and been able to check out the postage stamp controller and made it to the typical embedded "Hel...
Saturday, July 18, 2015

Postage Stamp Micro-controller

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In a previous post  I described a little one inch square micro-controller based on the ATMega328 which I decided to build in order to learn ...
2 comments:
Thursday, July 2, 2015

KiCAD

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Since being laid off at Dynon Avionics, I have been looking around at schematic capture and PCB CAD packages.  Chris at Contextual Electroni...
Thursday, June 25, 2015

Change of status

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Today I accepted a Firmware Engineer position with LOUD Technologies in Woodinville, WA working with the Mackie Digital Audio Mixing team. ...
2 comments:
Wednesday, June 3, 2015

Diode Ring Mixer - UPDATED

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In an attempt to firstly melt more solder than I have of late, and secondly to try and actually understand the operation of a mixer, I have ...
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Jeff ko7m
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