Links to local Bristol sites:
- Sessions Hotel
- Paramount Theatre Bristol
- Cameo Theatre
- Birthplace of Country Music
- Bristol Hotel
- Birthplace of Country Music Museum
Science & Electronics Technology Links
by Lewis Loflin
Science today is under assault in the name of social justice and pantheist' or "earth-center" mysticism. I've been into earth science and electronics technology for over 50 years and I have grave concerns with this issue. Science and technology have made great strides in improving human life and some are angry with that along with everything else. Science doesn't care about your feelings or spiritual beliefs nor do I.
See the graphic Science Vs. Environmentalism. I accept only the scientific method and not political opinions or authority of political activists collecting science grants from the government.
See Bristol, Southwest Virginia Revealed,
Bristol Virginia Tri-Cities a Great Place to Retire, and
Residents Flee Bristol VA-TN
Earth Science
- Common Sense Environmentalism (Archive)
- Spiritual Ecology Versus Science
- Dr. James Hansen Paid Environmentalist
- Green Religion Won't Save Appalachia
- How Ecological Homeostasis and Hysteresis Regulate Climate
- Michael Crichton Speech - Environmentalism as Religion
- Dissecting Al Gore's Book Earth in the Balance
- Postmodernism Attacks Reason, Science, and Culture
- Ages of Gaia Writer James Lovelock Sounds an Alarm
- Writer James Lovelock Backtracks on Revenge of Gaia
- Hypsithermal Warming Spreads Civilization
- Shockingly Rapid Climatic Shifts are Real
- Bikini Atoll Recovery From Nuclear Blasts
- NASA says Earth Going Greener
- Climate change changes history:
- Fall of the Late Roman Empire
- End of the Vikings in Greenland
- Lost Colony of Roanoke Island
- Whale Fossils Unlock the History of the North
Have an older 32-bit PC sitting around with a printer port? While many want to go to Raspberry Pi, but why not experiment with connecting basic electronics to a PC printer port? Switch LEDs and motors on/off. Read a voltage. Operate a LCD display.
One can do this even with old GWBASIC that was included with Microsoft DOS three decades ago.
In my view technology is the future and the real answer to many problems. On the other end technology will eliminate many jobs.
- Programming the PC Printer Port in Python
- Controlling Data Bits on the PC Parallel Port
- Connecting Switches to the PC Printer Port with Python
I've had been a part-time adjunct professor at a local community college teaching electricity and electronics. I have 40 years experience in electronics from vacuum tubes to modern solid state and industrial controls. In college I had a year each of physics, chemistry, and biology along with C, C++. Pascal, and assembly.
See the full list over 100 projects.
I'd say my job title would be applied technologist. See Electronics Projects for Students and Hobbyists
- Constant Current Circuits with the LM334
- LM334 Constant Current Source with Resistive Sensors
- LM317 Constant Current Source Circuits
- Introduction Hall Effect Switches, Sensors, and Circuits
- Using Ratiometric Hall Effect Sensors
- Pulse Width Modulation Power Control for Microcontrollers
- Introduction to PIC12F683 Programming
- Basic Transistor Driver Circuits for Micro-Controllers
- Opto-Isolated Transistor Drivers for Micro-Controllers
- Arduino Stepper Motor Coil Winder
- Considerations for Using Stepper Motors
- How to Connect Easy Driver Micro-Stepper Controller to Arduino
- Using a Unipolar Stepper Motor with a Arduino
- Using the MC3479 Stepper Motor Controller with Arduino
- Connecting the Arduino to a L298N H-Bridge
- L298N Motor Controller Theory and Projects
- Constant Current Circuits with the LM334
- LM334 Constant Current Source with Resistive Sensors
- LM317 Constant Current Source Circuits
- Introduction Hall Effect Switches, Sensors, and Circuits
- Using Ratiometric Hall Effect Sensors
- Pulse Width Modulation Power Control for Microcontrollers
- Introduction to PIC12F683 Programming
- Basic Transistor Driver Circuits for Micro-Controllers
- Opto-Isolated Transistor Drivers for Micro-Controllers
- ULN2003A Darlington Transistor Array with Circuit Examples
- Tutorial Using TIP120 and TIP125 Power Darlington Transistors
- Driving 2N3055-MJ2955 Power Transistors with Darlington Transistors
- Understanding Bipolar Transistor Switches
- N-Channel Power MOSFET Switching Tutorial
- P-Channel Power MOSFET Switch Tutorial
- H-Bridge Motor Control with Power MOSFETS
- More Power MOSFET H-Bridge Circuit Examples
- Build a High Power Transistor H-Bridge Motor Control
New essays October 2018:
- Nature's End? Hardly
- Growing Up Under Armageddon Any Day
- The Intuitive Wisdom of Organic Gardening
- Common Sense Environmentalism and Reason
- Common Sense Environmentalism 50 Years of Observation
- Common Sense Environmentalism (Archive)
- Spiritual Ecology Versus Science
- Dr. James Hansen Paid Environmentalist
- Green Religion Won't Save Appalachia
- How Ecological Homeostasis and Hysteresis Regulate Climate
- Michael Crichton Speech - Environmentalism as Religion
- Dissecting Al Gore's Book Earth in the Balance
- Postmodernism Attacks Reason, Science, and Culture
- Ages of Gaia Writer James Lovelock Sounds an Alarm
- Writer James Lovelock Backtracks on Revenge of Gaia
- Hypsithermal Warming Spreads Civilization
- Shockingly Rapid Climatic Shifts are Real
- Bikini Atoll Recovery From Nuclear Blasts
- NASA says Earth Going Greener
- Climate change changes history:
- Fall of the Late Roman Empire
- End of the Vikings in Greenland
- Lost Colony of Roanoke Island
- Whale Fossils Unlock the History of the North