Saturday, December 30, 2017

BaoFeng BF-F8HP Radio Charging System Diagram

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BaoFeng BF-F8HP information here . ----- -----
Friday, December 8, 2017

WSPR: Raspberry PI 20 Meter 100mW QRP Transmitter

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The summary:       - get a Raspberry PI       - get a General Class FCC license (if you don't have one)       - buy the WsprryPI h...
Monday, September 4, 2017

Arduino / MOSFET Controlled High Bright LED Motorcycle Light

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In our modern world, high bright LEDs can be purchased cheaply to provide low current draw auxiliary lighting to any vehicle.  Then it is...
Thursday, August 24, 2017

ToF Laser to Monitor Cat Food Levels

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 ----- We live in great times.  There was once a day when the only way to determine if the cat feeder needed more kibble was to actual...

micro:bit Tilt Angle Controls Servo Motor

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The micro:bit is a simple, rugged, easy to program microcontroller aimed at the education market a...
Sunday, June 11, 2017

Measuring Fidget Spinner RPM via TEK MDO4000 Oscilloscope

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----- How fast can a Fidget Spinner spin?  Well, it depends on what spins it.  Let's use compressed air. That sounds fas...
Monday, May 22, 2017

Tweeting Cat Door (now with Rasperry PI)

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----- It is hard to believe, but it was over five years ago that we created a Tweeting CatDoor using the Electric Imp .  Basic hobby IoT...
Monday, March 6, 2017

Remote Control the Alexa Echo from Anywhere in the World

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----- Seems to be a common request:  " How do I control my Amazon Echo remotely? "  As to why this needs to be done is somewha...
Friday, January 6, 2017

ESP8266 WiFi Garage Door Opener from any Web Browser

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The 'brain' is the ESP8266 uC .  It is available with on board WiFi and plenty of I/O for smaller projects.  All this for well und...