http://www.robotroom.com/index.html
http://www.robotroom.com/contact.html
David's robot room
分享許多他多年 的 興趣 與研究成果 還有書
你可以在 groups.yahoo.com 社團找到他的社團
內容相當多
如 機器人 太陽能機器人 感測器 馬達
相當有趣
專案裡 有
火箭發射器 控制器
天氣氣候箱
水位感測器
led 照明 圓環
彩色南瓜
溫度 風扇 控制器
網路 時間 時鐘
序列通訊
紅外線傳輸
led 牆
Electronic Projects, Circuits, and Devices
Here are some nifty little projects that are useful for tasks in the workshop or home, as well as some that are more decorative. Some of the articles help beginners with simple circuits, whereas others delve into details on specific microcontroller chips.
Model Rocket Launch ControllerThe secrets to a successful launch controller are thick cables, power through a relay, and a beefy battery (such as a lead-acid motorcycle battery). Learn what is inside a low-end commercial rocket launcher, how to make your own simple launch controller, and take a look at a fancy rocket controller that includes covered pilot switches and a switch lock.
Rocket Ignition SystemThe problem with most model rocket launch controllers is that the battery is located with the operator, far away from the launch pad. This requires thick cables and wastes significant energy. By locating the battery near the rocket engine and using a remotely-controlled relay, the improved launch system is more efficient but can still be built at home. Includes complete schematics, the pcb layout, and source/object code.
Weather StationLogging six temperatures and solar activity at one minute intervals around the clock using a 4 megabyte serial flash chip. The observation results are graphed to demonstrate weather conditions over multiple days in the Chicagoland area. Ran into some problems with a broken wire, overheating project box, shadows, and exposed sensors.
Weather Station ChartsWith the do-it-yourself weather station recording data for over six months, let’s see what can be discovered about the temperatures, sunlight, moonlight, and activities in the backyard, home office, and kitchen of a home in the suburbs of Chicago.
Water-Softener Brine-Tank Salt-Level MonitorIf you have hard water, did you ever forget to add salt to the water softener tank? This electronic device monitors how full the tank is using a Sharp DP2D12 infrared distance monitor. The results are displayed on a custom wall plate with a multicolor LED bar graph. The project also includes several photosensors to save power.
Miniature Surface-Mount LED Ring LightRing lights provide shadowless all-around lighting that is particularly useful for close-up work such as macro-photography and circuit-board inspection with a magnifying glass. This project also includes instructions on soldering surface-mount electronic components and machining a circuit board into a ring (round/circular/donut) shape.
Halloween Pumpkin with Colorful LED CandlesExtensive tutorial on putting blinking LEDs and different colored LEDs into jack-o-lanterns. Includes schematics, solderless breadboard photos, and three movies (the blue pulsing LED is my favorite). Great way of getting started in electronics! Although this was written for Halloween, the techniques are applicable for Christmas votive candles as well.
Standalone LED TesterDescription and schematic for a constant-current LED tester. It safely lights up standard through-hole and surface mount LEDs, while providing easy access to current and voltage measurements.
Dual Fan ControllerA birthday present gone too far. An overengineered temperature-based automatic twin fan controller with brass face to keep a kitchen PC cool.
Fighter Pilot Safety-Cover Toggle SwitchSee how an illuminated toggle switch works by breaking one open and putting it back together. Most of these are automotive switches, which need 12 V. The circuit schematics on the second page of the article show you how to shift voltage levels from 12 V to 5 V, and 5 V to 12 V. A microcontroller can read the switch state and blink the LED.
TrimpotsA visual guide to breadboard-friendly trimpots (small variable resistors) that appear in nearly every hobbyist electronic project. The article features comparison pictures and part numbers of 3/8-inch and 1/4-inch square single-turn and multi-turn trimmers. Even more interesting is the cutaway close-up photographs of the inside gears and brushes of these tiny potentiometers.
AVR Studio 4 and the STK500To write firmware to an Atmel AVR microcontroller, you need a computer, free AVR Studio software, a hardware interface, and a little bit of knowledge. This tutorial shows how to obtain, install, set up, and write a HEX file to an ATtiny chip using the STK500 programming board. Covers fuse bits, jumper positions, ISP frequency, and target voltage.
Trimming the Internal Clock on a KX8 MicrocontrollerExample algorithms for manually or automatically tuning the oscillator on the internal clock generator of the popular MC68HC908KX8 microcontroller. Also includes batch test results and a video.
Analog Comparison, Digital ResultComparators are very useful for comparing two analog voltages and providing a digital result. In this case, if the light source is dim, a red LED is enabled. If the light source is bright, a green LED is enabled. However, once comparators are understood, they can be useful for driving small robots or helping a microcontroller.
Multi-Segment LED DisplayLite-On LTM-Y2K19JF-03 is a surprisingly good LED display with alphanumeric, numeric, and icon LEDs. The LED module includes all driver circuitry -- no additional transistors or resistors are necessary. The article also describes how to create and edit a 14-segment alphanumeric LED font using Excel.
Serial CommunicationA very popular method of sending and receiving data between devices and computers is good old asynchronous serial communication. See traces of characters being transmitted. Learn how far timing can be off before introducing errors. Includes a table of popular crystal frequencies and baud rates, as well as machining information and a source code snippet for an automatic bps detection tool.
Atmel TWIExplains an I2C multi-master bus issue on the Atmel AVR 8-bit microcontrollers. Shows logic analyzer traces of TWI (two-wire interface).
Alphanumeric LED Display ProjectA phenomenal 256-diode ROM acts as a character generator for a two-digit hexadecimal display.
Infrared Transmitter ProjectThe heart of this project is a NAND gate turned into a 40-kHz oscillator. A simple 9-volt to 5-volt regulator circuit schematic is also included.
Robot Books
Robot Building for Beginners by David CookThis book is for readers who like the schematics, photographs, and style of Robot Room, but who have been looking for complete step-by-step instructions or a beginning project. Robot Building for Beginners consists of all new material that doesn’t exist on this web site. Highly recommended. Teens to adults. Here’s a detailed look at the chapters.
Intermediate Robot Building by David CookA second book, also in the style of the Robot Room website and the first book. Presents a second robot that can be built with or without programming. All new material not presented on this site, plus greater in-depth material on the topics that receive the most questions on RobotRoom.com:- Bipolar H-bridge motor drivers and MOSFET H-bridge motor drivers
- Infrared reflective sensors
- Cadmium-sulfide photoresistors
Junkbots, Bugbots, & Bots on Wheels by Dave Hrynkiw and Mark W. TildenTruly an excellent book from very talented builders!Tons of clear photographs with complete instructions for multiple robots and related experiments. Lots of tips and tricks.
There are two things I like most about this book: First, the authors concentrate on recycling as many techno-trash parts as possible, which overcomes the cost barrier that many robot hobbyists encounter. Second, the designs are extremely different from the two-wheeled robots that I tend to build. Their fascinating (yet easy to build) robots are much like insects in appearance, movement, and behavior.
沒有留言:
張貼留言