I'm looking for a short-range, wireless pressure sensitive pad and a fob with an alarm -- to connect both.
I also think I might need a raspberry pie instance to connect both, but if not it would be "cleaner". Your thoughts apprecd.
I wanna to consult you about the future of WIFI and Blutooth.Do you think the wifi will kill the bluetooth in the future?
The friend in the field all prefer wifi to bluetooth.So i want to consult you.
I found a transceptor " nRF2401A " in other shop, and I would like to know if there is a similar product in Newark.
My project is to send the signal of a sensor, but wiressly, this sensor is like a turbine and generates pulses with a magnet, I want to send theses pulses to the counter to calculate the water flow rate.
I hope your help and recommendation.
i want to make vehicle tracking system using gps module and gsm modem with the help of atmega16 microcontroller.plz help me.
I need a very thin and flexible piece of ferrite to mount on the backside of an antenna for an NFC application. This seems perfect http://www.hitachi-metals.co.jp/prod/prod01/pdf/nfc_sheet.pdf
But I can not find a distributor (and they don't answer to my email requests). Do you know if Farnell has something similar? (I have a little hard time on defining the right name for it, it might be why I don't find much anywhere).
Devices have become smarter and demands on them have become greater. During this time WIFI implementations have become smaller more power efficient, cheaper and easier to implement some only require a simple serial link to drive them and include an entire TCP stack. Personally I think BT has had it's day in the smaller solution space where it wins out you may well be better implementing ZigBEE or any one of the "industrial control" solutions ?!
The Nordic devices work well but if you are looking for a solution from Farnell have you considered one of the ChipCon devices (Now TI) or a module such as the one from Microchip
There are simply dozens of solutions in this space depending on what you are trying to achive/budget!
Your formula is still valid the "c" in this instance should be subsituted for the speed of the wave in the medium you are working with.
So for say Radio in outer space then the 'c' would indeed be the clasical Speed of light in a vacuum however if you are talking about the speed of a sound wave from say a train at sea level you need to obtain the speed of the wave in that circumstance which is indeed around the 340M/s
I wanted to adapt an xbox 360 controller to connect wirelessly to my PC. I know there is already a microsoft product that does this, but it has a long cord, the device is relatively big compared to other wireless devices (a wireless mouse, for example), and it takes multiple controllers. I was thinking of making it as small as possible and make it pair a single controller. It is not necessarily the best application; however, I wanted to experiment with wireless technology. In other words, I wanted to do the project for the fun of it. Which wireless technology do you advise me to use. If there is a better way of doing this, then how?
Want to create a wireless- remote control switch for a 115v winch motor that will function over 500 ft, obstructed line-of-sight. The motor is currently controlled by a DPDT momentary switch to engage forward and reverse. A 800 ft, 4-wires cable is currently used to connect power to the motor and switch to control the motor. I want to create a wireless switch control (Tx/Rx) units to untether the winch motor from the truck. A portable generator will be used to provide power directly to the winch and the wireless receiver. I want to use once channel for forward and separate channel for reverse. Reverse is accomplished by a relay within the winch motor. I'm thinking of something in the 27Mhz or 433Mhz band, around 1W to achieve this distance.
I want to try and build this as a DIY project to learn about wireless controls.
It seems simple in the idea, but struggling with where to start... Tx/Rx components needed, relays, etc.
I have schematics for the motor wiring and the switch control box. Just want to replace the wire connecting them with a wireless connection.
I can send them to you if that would help.
Can you direct me some companies that can provide the components needed to build such a beast?
I need your help regarding selection of a proper RF diode(smallest available as i hv to incorporate it in a ring) to light up 1 SMD 3525 leds.
Appreciate your time, thanks in advance
why we cannot transmitt the electicity wireless ....??????????
I have built a DIY variometer for RC sailplanes which uses arduino and inexpensive 433 MHZ transmitter and receiver.
The suggested TX is RF Solutions AM RT14, which is not available at element 14 or anywhere in USA. I have used the AM RT4
with moderate success but really need the more powerful RT14. Can you suggest an available substitute.
On the following website you will find a description of a direction finding system. http://www.signal.uu.se/Publications/pdf/c0110.pdf The pattern of the antenna can be changed by steering the parasitic elements. This way the antenna pattern can be rotated electronically. The rotation speed could be between 12 Hz and 2 kHz. Don’t use a frequency that has any relationship with the mains frequency and don’t use a frequency outside the bandwidth of the receiver. The point of maximum signal can be compared with the actual position of the antenna pattern. This way the direction can be determined. With two such systems at different locations you can find the position of the transmitter. The antennas could be located at the balconies on both sides of the building.
I am an electronics student with a project in mind and was wondering if you share some of your expertise on this.
The project consists of a pressing a button ( switch) and sending that signal (of the button being pressed) to a website and a phone app. The system consists of many buttons , so that when one is pressed the website receives a signal as to that button has been pressed.
My main problem is: How do I send that signal wirelessly over the air? Im thinking wifi, am i right? if so what hardward would I need.
Thank you Chris