Science-DIY

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Here are some Metal Detector Projects that are quite interesting for the purpose of education and experiments in the Art of electronics. This site may be as old as Y2K, but the url / domain may have changed.

Metal Detector Projects

If you are interested in the theory behind the mag I can highly recommend the book The Magnetics Measurement Handbook by J.M. Janicke. Besides a good coverage of magnetics theory, it contains much of what you need to build a useful fluxgate Magnetometer, plus other devices.

Traditional Geophysical instruments include ground-penetrating radar, earth resistivity meter, infrared, and sonar, to name a few. Currently, earth resistivity projects are the most practical for the do-it-yourselfer, although some people have been tinkering with side scan sonar.

Metal Detector Projects

Detection of Gold

Just the Jeohunter really works and directly detects Gold – see below screen. And even gold-worth 9-15cm diameter cannon-balls get detected as “Gold” (golden ring & cannonball analyses has identical values), but thats because of the huge metal mass and special shape – alot MDs have “problems” in such situation and perhaps only a magnetometer really works here. btw. there is no difference if you search with Ground Balance minus 200, zero or plus 200, the gold detection always remains the same.

Detection of Gold - Metal Detection

There are historical records of DIY Enthusiasts having created what is known as the “Donkey Kong Gold Hunter”. This Gold Detector uses a Nintendo Unit after many Mods.

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These books Electricity and Magnetism, Optics and The Modern Revolution in Physics are very useful for any student of electronics. To have sound science foundation, Physics and Chemistry are very important for an Electrical/Electronics Student.

Biology and Environment learning is important for the Analytical and Medical Equipment designer. Chemistry is important for the study of materials which enable us to make new components and semiconductors. Maths cannot be ignored, it needs no special mention. Numbers are everywhere, this is the most important part of science.

Science a Foundation for Technology

Electricity and Magnetism Optics The Modern Revolution in Physics

Light and Matter: open-source physics textbooks

Electricity is Shockingly Simple

 Our Nervous System works on a Electrochemical Electricity. Brain is an Organic Chemical Computer. The Thunderbolt is just an overgrown electric spark. You know the shocking facts about the electric eel. Underwater creatures can illuminate themselves, could be like OLED.

All your Home and Office runs on electrons. Electric cars are already a reality. This page will charge you with Electrical Facts you ought to know.

See the electric eel too.

Electricity Posters – Education – National Physical Laboratory

WikiCiencia – Science and Tech Portal

 Devoted to electronics and computing. Featured articles

Control Systems – What are the control systems, Types of automation. Solar Cells – Photovoltaic or photoelectric cells. Operation of semiconductor PN junction.

Includes collaborative wiki on subjects like Semiconductors, Communications, Electricity.

WikiCiencia – Science and Technology Collaborative

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BEAM is an acronym standing for Biology, Electronics, Aesthetics, Mechanics. While BEAM robots are often simple (consisting of a solar cell , motor, 2 transistors , and capacitor ), robots as complicated as 8-jointed, 4-legged walking spiders have been built using the principles of BEAM.

Solarbotics.net – BEAM Reference Library

The BEAMAnt is a phototactic bot which has potentially complex behavior depending on the light level. It has two photodiodes for light sensing, and two antennae which switch the motors into reverse when they touch something.

BEAM Robotics

Mechanisms and principles

The basic BEAM principles focus on a stimulus-response based ability within a machine. The underlying mechanism was invented by Mark W. Tilden where the circuit (or a Nv net of Nv neurons) is used to simulate biological neuron behaviours. Some similar research was previously done by Ed Rietman in ‘Experiments In Artificial Neural Networks’. Tilden’s circuit is often compared to a shift register, but with several important features making it a useful circuit in a mobile robot.

BEAM Robotics – Wikipedia

Solarbotics offers robot kits, solar-powered robots, books, electronic components, motors, parts and information on the expanding field of BEAM Robotics.

TomboT – and the home of Liverpool Universities BEAM robotics

“Myself and some friends demonstrated to the University how simple robots can be built which provide an excellent learning platform, and as a result the University have changed the way they utilise their Year 1 lab sessions to include our robots”. – Tom Elner

One more nice site BEAM Robots and also BEAM Online.

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CheapStat: An Open-Source, “Do-It-Yourself” Potentiostat for Analytical and Educational Applications.

CheapStat – DIY Potentiostat

CheapStat, an inexpensive (<$80), open-source (software and hardware), hand-held potentiostat that can be constructed by anyone who is proficient at assembling circuits. This device supports a number of potential waveforms necessary to perform cyclic, square wave, linear sweep and anodic stripping voltammetry.

CheapStat - DIY Potentiostat

The device supports cyclic, square wave, linear sweep and stripping voltammetry over the potential range ?990to +990 mV and over frequencies from 1 to 1000 Hz. The device supports a range of environmental, food and drug quality control, and educational applications. The reverse of the circuit board supports a three-line LCD display and a joystick, which is used to select an experiment protocol, change its parameters (frequency, starting voltage, end voltage, scan rate), and initiate the experiment.

DIY Potentiostat – CheapStat – EEMetric

The device’s schematics, parts lists, circuit board layout files, sample experiments, and detailed assembly instructions are available in the supporting information and are released under an open hardware license.