Radio controlled sockets are a great way to save power in your home. Devices consuming more power on standby than the sockets do can easily be switched off with a remote. For example my desk lamp from a swedish furniture store consumes 10x more power (in the off state) than a radio controlled socket. Even if the sockets consume more power in standby than the attached electronic device, they offer the luxury of turning stuff off and on without even moving. In short: They are really handy. However, if you’ve installed the sockets, one sentence will often reoccur: Where the f*** is my remote?
This project page provides a guide to adding both USB and a Web based User Interface (UI) to remote control socket set. In the process we will unlock even more capabilities than are available when you use the socket set as they were originally intended. Part 1 (this post) deals with the hardware, Part 2 deals with programming the chip and Web UI . It essentially builds upon this blog by [befinitiv ] Radio controlled sockets are a great way to save power in your home.
Introduction Working with LCD displays is always useful, for debugging hardware by showing various data or part of a final design. Furthermore, using them can be rather wasteful of I/O pins, especially when trying to squeeze in other functionality. Plus there’s the external contrast adjustment, general wiring and the time taken to get it working. (Don’t believe me?
Displaying content on a normal alphanumeric display is very limited ,we have to be limited with the font size and we can't draw any graphics also. but convention Graphics lcd are really very expensive so here is the solution, you can use Nokia 1100 monochrome LCD to display your large font text and graphics . the reason behind using this LCD is ,it is really very cheap and can be powered with 3 volts supply. so it is really good for battery powered application. Driver IC on this LCD panel is PCF8814 which even though has I2C protocol support - doesn't use it. Instead it uses simple bit-banging mechanism for communication. Project Description
In conjunction with the release of the new Arduino PID Library I’ve decided to release this series of posts. The last library, while solid, didn’t really come with any code explanation. This time around the plan is to explain in great detail why the code is the way it is. I’m hoping this will be of use to two groups of people: People directly interested in what’s going on inside the Arduino PID library will get a detailed explanation.
embedded-lab.com writes: HD44780 based LCD displays are very popular for embedded projects because they are cheap, easy to interface, can display characters, consume power lot less than seven-segment displays, and most of the present day compilers have in-built library routines for them. However, the only disadvantage is that they require at least 6 I/O pins of microcontroller. Well, you may ask, isn’t that less than what seven-segment displays require?
Description: These wireless receivers work with our 315MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only receivers, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair. Note: These modules are indiscriminate and will receive a fair amount of noise.
Asbjorn Mikkelsen | 2013-02-04 I would like to buy only the receiver, as I want to use one transmitter to broadcast to multiple receivers. Will the receiver be available on its own?
Replacement: WRL-10535 . We are now carrying the same transmitter from a different supplier. This page is for reference only. Description: This is only the 315MHz transmitter.
Gerald Backer | 2013-03-25 I am curious why the Transmitter can only handle 5 volts. The chip can do 12 volts just fine. What part is the limiting factor? hi, they are both working on 5V, the sickscreen on the board "12V" is an error.. Answered by
Felipe Miranda | 2013-03-11 Hi! When we will arrive more of this radio? Maybe I will need more than 10... Hi,now we have some in store. Answered by
Every Wednesday we highlight a component from the updated partlist . This week: NPN transistors Transistors do lots of analog tricks, but we only use them to switch high powered stuff with a weak microcontroller pin. Usually an LED.
Our good friend Tod Kurt, of ThingM , shows how to control a strip of RGB LEDs using the BlinkM MaxM driver and a FreeM IR remote receiver. <img src="http://makezineblog.files.wordpress.com/2011/08/accentlight01.png?w=600&h=480" alt="" title="accentLight01" width="600" height="480" class="alignnone size-full wp-image-105423" /> I used some similar strip lighting and a MaxM for a friend’s Halloween costume, and really liked being able to program the blink pattern via Arduino. The addition of an IR remote opens up interesting possibilities. <img src="http://makezineblog.files.wordpress.com/2011/08/accentlight02.png?