Monday, June 15, 2015
The "Simple-Timer" includes a fairly accurate timer that is programmable (via pushbutton) by the user and can be programmed to time a 5, 10, 15, 20,25 or 30 minute event. When the timer/switch is enabled (tap small pushbutton), the onboard LED indicates the output is active by lighting solid (the circuit also outputs the same voltage as your supply/battery voltage using a PN2222 NPN transistor or a high current MOSFET).
Saturday, September 22, 2012
Digital Infrared Motion Detector Module
Miniature micropower motion detector module uses a digital pyroelectric infrared sensor to detect a moving human or animal, operates on 4 to 15 volts and can directly drive a LED or relay. This module can be used with a FL40 or FL65 Fresnel lens or other types of lens.
A Glolab KIT consists of a PC board and parts that must be mounted on the board and soldered in place by a user. A manual with assembly instructions, schematic diagram and physical layout diagram is included with a kit. Other user supplied parts may be required in order for a kit to perform a specific function after it is assembled.
Basic Four Channel Wireless Transmitter and Receiver
These basic kits include the components needed to build a functioning wireless remote control system with only the addition of power sources and some wires.
The kits uses RF transmitter and receiver circuits that operate at 418 MHz with a range of up to 1000 feet. Thanks to these new modules the problems associated with building your own transmitter and receiver such as tuning by adjusting capacitors and inductors are things of the past.
Thursday, December 08, 2011
The Femto OS is a very concise portable real time - preemptive operating system (RTOS) for embedded microcontrollers with minimal ram and flash, say 2KB .. 16KB flash and 128 .. 1024 bytes ram. The main target is the Atmel AVR architecture, such as the ATtiny or smaller ATmega series.
Femto OS is specially made for small embedded devices. For example, the 'Smallest application' is the application called 'Bare' compiled for the ATmega8. It solely runs a 16 bit led counter on the idle task hook. It consumes 258 bytes of flash and 10 bytes of ram.
- Ruud Vlaming
Read More -
Thursday, November 17, 2011
Project is free. Almost all source codes are available.
Web51 - Project start page
Twisted Pair Ethernet 10 Mbit 802.3,Serial TTL level compatible line RS232 (RxD, TxD, RTS, CTS), 32 kB RAM, 64 kB FLASH, 2kB EEPROM.
Murray's Website is missing so here are the related resources.
ET have produced a remarkable board in the WEB51. It is based on the popular Atmel AT89C51RD2 microcontroller, and features the RealTek RTL8019AS full-duplex ethernet controller chip.
You get a huge 64K In-System-Programmable FLASH memory for code and web content, backed up by up to a further 4 optional, I2C addressable EEPROM memory chips.
The ET-WEB51 TCP/IP Ethernet Web Control Board comes preloaded with TCP/IP software that allows you to control outputs, sense inputs and write text to an LCD. All this across the Internet via a standard browser.
"From controlling appliances on your home network, to monitoring industrial processes on the other side of the Earth, the ET-WEB51 can do it all."
Embedded 8051 TCP-IP WebServer
Thursday, March 24, 2011
This is an Embedded Project using a XBee. Makes an Energy/Watt/Power Meter into a Wireless Intelligent Sensor.
These Sensors are Interfaced to a PC using another XBee. The Data Acquired can be Displayed(monitor), Logged (sql/csv) and Analyzed (graphs/reports). Then you can form a set of Green Resolutions and Implement them.
Monitor upto 1.5 KW, You have to own a Kill-A-Watt device to Add-On this Kit to Web Enable it. Each plug transmits the power usage at that outlet to a central computer receiver. The receiver can then log, graph and report the data.
Wednesday, February 23, 2011
CAn Remote Automation-Control with AVR
Every node of the net communicate each other through a robust protocol (CANBus), and the status can be monitored by a PC possibly connected to the Internet.
Other Open Source Home Automation Projects
MisterHouse: Home Automation with Perl
MisterHouse is a Windows/Unix home automation program written in Perl. It can respond to voice commands, web browsers, time of day, serial port and X10 data, external files, etc and can speak via Text to Speech engines.
OpenRemote - Home of the Digital Home
Software for the Internet-enabled Home at openremote.org. An Open Community in the Home Automation and Domotics space. We believe an Open Source approach can revolutionize the way people create, install, and maintain software in the industry.
Friday, August 08, 2008
Home Automation by Edward Cheung
"This centralized system can control almost all of the lights in my home, a few appliances, the garden irrigation, some window treatments, the Audio/Video system, the security system, and the HVAC (Heating Ventilation and Air Conditioning)."
"I can communicate with the central computer by using keypads throughout the house, any phone in the world (including those inside the home), any browser over the internet, and from my wrist watch. A webcam (with integral pan/tilt) allows me to see what is happening with nothing but a web browser."