• Tech Ads

RoboBrrd from RobotGrrl Erin

RoboBrrd is an animatronic character designed to be utilized as a tangible physical interface to interact with learning applications for elementary school students. A Smart Robot Bird. A Edutainment aid Bot Avian.

RoboBrrd from RobotGrrl

Impy RoboBrrd – Nicknamed ‘Impy’, short for ‘Important’. This is the latest RoboBrrd, and the official prototype that sparked the creation of an Instructable and intense documentation for the RoboBrrd robots! Impy uses a standard Arduino as a brain and has a NFC reader to see what hats it is wearing.

RoboBrrd from RobotGrrl Erin

With RoboBrrd being a tangible physical interface, the students will interact with RoboBrrd to control the in-game character within the learning application, and RoboBrrd will motivate the students to keep playing with chirps and celebratory dances. Different behaviours in RoboBrrd will be unlocked for every level that is beat,

Treasure Hunting and Metal Detectors

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.

Aaron Cake Basic Electronics

Aaron Cake has many basic electronic circuits and other electronics information in his archive that is online since the 90s. Antique electronics and Parallel Port Programming.

Aaron Cake Electronics

Aaron Cake Basic Electronics

The Schematic Symbol Reference, How To Solder and Desolder helped many electronic beginners in building their Projects. This was a valuable resource in those days even though it appears common today. The internet was used to genuinely share useful learning and ideas.

Some highlights are circuits on Power Supplies, a 120VAC Inverter, FM Transmitter, Automatic Headlight Brightness Switch, Car Alarm  and a Wireless Auto Tachometer. see also the Simple Colour Organ and the Solid State Tesla Coil.

Hobby Circuits – Bill Bowden

Bill Bowden’s Circuits is one of the oldest Web Reference, it was hosted by CompuServe homepages and later moved to his own domain website.

A small collection of electronic circuits for the hobbyist or student. Site includes over 100 circuit diagrams, links to related sites, commercial kits and projects, newsgroups and educational areas.

Hobby Circuits - Bill Bowden

Most of the circuits can be built with common components available from Radio Shack or salvaged from scrap electronic equipment…….

Hobby Circuits – Bill Bowden

Some of the Highlights in this website

  • 32.768 KHz Oscillator Using A Common Watch Crystal
  • 40 LED Bicycle Light (555 Timer – 6 volt)
  • Descrete LED fading circuit using 5 transistors
  • Mechanical Wall Clock Quartz Synchronizer
  • Neodymium Magnet Single Pole Motor
  • Variable Voltage and Current Power Supply
  • Micro Power AM Broadcast Transmitter

EMS Laboratories – Hobby Electronics

Unprecedented Innovations from a young group of Scientists who may change the way we interface with the Electronic Environment around us.

EMS Laboratories – Hobby Electronics

Meggy Jr RGB is designed to be programmed through the popular Arduino software environment, when you hook it up to your computer with an FTDI USB-TTL cable

Meggy Jr RGB

Meggy Jr RGB is a new kit that we designed as a platform to develop handheld pixel games. It’s based around a fully addressable 8×8 RGB LED matrix display, and features six big fat buttons for comfy game play.

A unique feature of Meggy Jr RGB is that it is designed to be mounted inside a “handle set” — a wooden or plastic case that’s safer and more pleasant to hold than a bare circuit board.

Getting Started in Electronics – Forrest M Mims III

Begin With the Basics – Learn about static electricity and how to make magnets and solenoids. Find out about direct current and alternating current. Then learn about electrical circuits that use batteries and lamps.

Getting Started in Electronics – Forrest M Mims III

Getting Started in Electronics - Forrest M Mims III

Other Books –

  • The Forrest Mims engineer’s notebook
  • The Forrest Mims circuit scrapbook

Forrest Mim’s Science Web site

Mims was interested in science at an early age, and he built an analog computer as a high school science fair project in 1960. While memorizing his Latin class vocabulary words, Mims conceived a computer that could translate twenty words from one language to another.

Forrest M. Mims III is an American amateur scientist

The input was six potentiometers (variable resistors) each having a dial with 26 letters. Entering the first six letters of the word on the potentiometers set a total electrical resistance. The memory of known words was a bank of 20 screwdriver-adjustable trimmer resistors.

Tom Jennings – World Power Systems

“I make things, mostly technological, but don’t hold me to that, consistency is not a human virtue. Electronics and software, cast iron and plastics, microcontrollers in vintage automobiles, faux historical machinery that could (not) have been; finely crafted, rigorously rugged, reliable, most often.”

Tom Jennings – World Power Systems

The Model 01a (aka M01a) is a 3″ x 5.5″ self-contained controller board designed for embedded applications. It’s based around Microchip Inc’s in-circuit-programmable 14-bit PICs, and contains I/O expansion, a power supply and various goodies that I found useful in five years of using my previous controller board design.

WPS Model 01a Control Engine

WPS Model 01a Control Engine

The M01 board contains enough support hardware to pull off a lot of functionality. Before I get to handling common interface problems here’s a function-by-function description of the hardware. There’s some subtlety to some of the design that’s worth paying attention to.

Index of www.wps.com, by subject

Technical reference data; obsolete, obscure, hard to find, and sometimes just plain old; mostly things made or written by others.