deal all, I would be glad if you can supply me with the theory of operation , circuits , design of a metal detection door because i need to design one please...
If you never programmed the AtMega to do USB job, then it is a long time learning protocol and tricks. It is NOT a simple and easy task to be done in a couple...
A metal detector gate is composed by an electronic oscillator and the antenna at the gate. The antenna in fact is a wire coil, that makes part of the...
im working on a study that requires an air pressure sensor which reads just about below the atmospheric pressure... is there such kind available in the market?...
Sure--there are a wide range of pressure sensors with about any range and sensitivity you can imagine--from vacuum to megapressure. Check out Omega.com for a...
If it does not have to be electronically readable you can use a manometer. That is just a clear U shaped tube with some colored water in it and a scale...
Hi all, I'm new to this group and am looking for help with specing a proximity/presence sensor for a piece of video art. I'm a software engineer working with...
An ultrasonic sensor CAN work for your application, but ultrasonic sensors are very sensitive to changes in the enviroment. Most enviroments change slowly, at...
Something I forgot--if you are set in using ultrasonic sensors, pretty much the gold standard for them is the Polaroid sensors. They use some unique...
hi, do you guys have any code for interfacing Parallax ping ultrasonic sensors with pic microcontroller regards ... [Non-text portions of this message have...
... I've had some good results with the SRF08 module shown on this page: http://www.robot-electronics.co.uk/acatalog/Ultrasonic_Rangers.html We were using them...
Hi David, Thanks for your info, it gives me some other options to think about. As for capacitive sensing, I worry that I wouldn't get the range I need - 18 to...
Hi Asher, Thanks for the info, it's great to hear about a sensor you've had success with. I'll check it out. Can you point me in the direction of information...
You can use thermal sensor, or image sensor, or pressure sensors, or the best; IR Radar. Thermal would measure person's temperature in the designed area, when ...
Hi, Taiya     The reason I reccomended the idea of a break beam, is that if you can controll the entry and exit to the display area, it gives you the best...
... There are several adaptors that allow a PC to control an I2C bus (have a google) but I've only ever driven the bus from microcontrollers so I can't comment...
Asher thank you so much for all of the info :-) I'll look at all of the info you provided. The C code looks fine, I'm sure I can figure it out and even if I...
Hi David, I found out that senscomp.com apparently is selling what used to be the polaroid sensors. I'm kind of liking what they have to offer right now. But...
Hi, again, Tiya Actually, I may have given the wrong impression. I am not against ultrasonic sensors at all. They can just be a bit more difficult to get...
Thanks David! I'm okay with tweeking the sensors and figuring out the timing. I've worked with other sensors before and lots of things that have tricky...
Folks, does anyone know where to find a 12V AC dimmer circuit that would handle 4 amp = 48watt? I have googled it but didn't find anything for low voltage AC....
USB connection might be done in two ways. Directly via specific IC's or firmware. Or indirect via converter. The second option simply easier. My recent work...
I have a suggestion for hooking up whatever sensors, switches, etc. you want to a usb port. Velleman makes a fairly inexpensive kit that lets you hook up...
Hi, Don     Basically, as long as the triac can handle the power, the circuit is bassicaly the same as the higher voltage phase control dimmers. Don't...
Hi David, Thanks again for all of the info, you guys are great! I'm really happy to have found this forum. As for the USB, I'm geeky enough to want to write...
can any1 guide me to implement multiagent routing on sensor network???? is there any OpenSorce simulator??? or what should i use??? i am very new to sensor...
glomosim is protected.how to get it for msvc++?? ns-2 is not an easy stuff on windows vista to build.can u gide me??? ________________________________ From:...
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