is it possible to charge my laptop with the power present in the carrier wave which i recieve.

Ie.by storring it in accumulator till enough power is obtained?

Asked by 9 years ago | last reply 9 years ago


How to connect a team of 5 on an open channel without a walkie-talkie?

I found that I can use Lora wireless tranceiver but I want a guaranteed way because I live in Lebanon, and I don't have any source of these equipment, so I need a working way to make the order and build my project here. Thank you

Asked by MouhamadA1 1 year ago | last reply 1 year ago


A good wireless arduino communication device for helium balloon that is supposed to fly for altitude of 10 km

I'm finding a sensor for my project, which is going to fly the helium balloon and collect pressure/temperature/humidity data from around altitude of 10km. is there any good wireless communication device for my project?

Asked by LeeS182 1 year ago | last reply 1 year ago


What device was used to communicate people in Mission Impossible 4 movie?

Can anyone help me find out the device used on MI 4, in the scene taken at Burj Khalifa and India? I have seen this in other movies, but can’t figure out what device is this.

Asked by robi_ncc 6 years ago | last reply 6 years ago


project documentation of cell phone operated robot?

Null

Asked by 9 years ago | last reply 9 years ago


can any one help me out with DAC coding for FPGA sparten-3E starter kit?

I am working on a communication project on FPGA kit. So can anyone help me with DAC  FPGA codin for sparten-3E starter kit..

Asked by Uniqumesh 6 years ago | last reply 6 years ago




Arduino UART communication quandary

I'm trying to hook up a 5v Arduino to a 3.3v datalogger. I just realized that in all the time I have been messing around with micro controllers, I have never communicated serially to a device that wasn't 5V. I was about to just wire the two devices together when I thought better of it and figured I should look into the matter a little further. Can I just directly connect the RX pin on the 3.3V device to the TX pin on the Arduino? Or do I need to add a resistor in-between? Or a voltage divider? Actually, that wasn't all that many questions. Basically, I'm just wondering what is good form in communicating between devices of varying voltages?

Posted by randofo 10 years ago | last reply 10 years ago


Is it possible to make a wall outlet intercom system?

I have seen many systems where you plug some boxes in the wall, and you can talk. Is it possible for me to make something like that myself?

Asked by newtons_eple 9 years ago | last reply 9 years ago


CP2101 USB to serial IC

Sparkfun makes an excellent breakout board for Silicon Laboratories' CP2101 IC. It looks like this board could be used to connect a PC to your microprocessor through a USB port without having to use a MAX232 IC to convert the TTL voltage levels to the serial port voltage levels and then a USB to serial converter. Drivers are available so the PC sees the CP2101 as a COM port so hyper-terminal could be used to communicate with the microP. The 'S' in USB stands for serial, it should would be nice to connect a PC to a microP using only one piece of hardware. Am I right about the CP2101 providing this ability?Any opinions would be appreciated.

Posted by nolte919 9 years ago | last reply 9 years ago


Wi-fi print server question

I've seen these USB to Wi-Fi adaptors and I'm wondering if they act like wireless USB ports. The gist... I'm going to use a USB interface board and I want to know if I can use a wi-fi print server to make my control a robot via wireless. Any suggestions are welcomed.

Posted by ry25920 9 years ago


Intercom radio network with tree or more old landline phones?

Hi, me and my friends who live at a bording school, wold think it was a lot of fun, if we could make an intercom network so we could speak with each other, we have thought of making the network with tree or more old landline phones. anyone got some suggests?

Posted by sunes13 7 years ago


I have a question about those wireless enabled USB print servers

I've seen these USB to Wi-Fi adaptors and I'm wondering if they act like wireless USB ports. The gist... I'm going to use a USB interface board and I want to know if I can use a wi-fi print server to make my control a robot via wireless. Any suggestions are welcomed.

Asked by ry25920 9 years ago | last reply 9 years ago


how magnetic induction data transfer from sensor happens ?

Hi, i want to know how data from sensor is transfered by coil through magnetic induction to another coil ? i know its range can be increased by relay coils but how to append data to the magnetic flux.. its really confusing . pls some one help me thanks in advance

Posted by rockindud 5 years ago | last reply 5 years ago


Intel Galileo will not communicate with Uno?

Hello, I want to communicate with my arduino uno via serial on pins 0 and 1 of the Galieo and SoftwareSerial on Uno pins 10 and 11. I have checked the baud rate and all i get when i read the SoftwareSerial port is garbage. Does anybody know why this is happening? Thanks

Asked by D5quar3 4 years ago | last reply 4 years ago


two arduino communicate via LAN or Internet. LED on / off example?

I have two arduino uno with Internet Shield, which I want to communicate via LAN or Internet. want to set up so I can use a button on one to send information. and an LED on the other (slave?) that will turn on when the button on the "master" is enabled. I've looked back and forth on forums etc. without found any sample code for such communication. does anyone have such a code? or know where I can get such a code for this? assume there is hope to find that up in internet Hoping for good and helpful answers Best regards. Vegard

Asked by vegisen 4 years ago | last reply 4 years ago


Implementation of two way communication

Hi, I'm working on a project where we're working on a tele-operated robot and we are looking to include the ability to have a conversation. We would be looking to use earbuds and a microphone on the operator side and a speaker and microphone on the robot side. Does anyone know how to go about implementing this? It needs to be hands free on both ends as the operators arms are being mapped to the robots arms. Thank you.

Posted by ArnoldM27 1 year ago | last reply 1 year ago


Search and communication software for multiple deep sea drones

Why, for clearly group drone work, like clearing mine fields and searching for an airplane lost at sea, don't we have software that can coordinate a group of drones to systematically work together to thoroughly search a programmed area and either blow up the mines or notify "command" of a "hit"?   I can also imagine aerial drones being used to search for lost hikers or for military purposes.                                                                                                                                                                                                                     Somebody can do this. 

Posted by Chrmngblly 4 years ago | last reply 4 years ago


Intercom landline phone network?

Hi, me and my friends would like to get an answer of how we could make an intern network with tree or more landline phones.

Asked by sunes13 7 years ago | last reply 7 years ago


which RC transmitter to buy for my quadcopter?

I am trying to buy a RC Transmitter for my quadcopter that I made myself. However, I am not sure which transmitter should I buy that would satisfy my requirement. I just need 4 channel (Basic channel) communication; nothing complicated. Will this be suitable: http://www.ebay.co.uk/itm/V911-Single-Blade-4-Channel-RC-Helicopter-parts-Transmitter-2-4G-WL-Toys-/190852761126?_trksid=p2054897.l4275 If not can anyone suggest me a good one please but not too expensive one. Probably around £30. Thanks in advance :)

Asked by Bam Boy 4 years ago | last reply 4 years ago


Arduino to computer commands? Answered

I want to make arduino ultrasonic range meter and after it hits certain value to print command to my mackbook (to play a song) I think it could be possible with serial monitor, but i have no idea how to do this. Any help would be appreciated.

Asked by TheFruktus 5 years ago | last reply 3 years ago


How does one transfer data from a c# program to an arduino module via the internet? Answered

Could someone throw me a link or two to a tutorial or article that could assist one in learning how to transfer data from a c# program (using windows api) to an arduino module over the internet? I've found some tutorials on controlling the arduino through a web browser but nothing that shows how to do data transfer from a c# program.

Asked by fdsafdsaqwrewqrbsafdsagrgew 6 years ago | last reply 6 years ago


Powerline communication

Hello I'm intrested in plc (powerline communiction) but I can't find specific schematics and / or "to the point" information. If someone can help me with information ect... or anything use full??  Thnx

Posted by geo bruce 6 years ago | last reply 6 years ago


Mobile pc communications

I'm not sure if this is the right place to post this so i'm sorry if its not. I am looking to control a set of switches using an old mobile phone connected to my PC. Sending a text message to the phone would let you do various things depending on the text message content. I don't even know if this would be possible but it is something I am looking to do and this seems to be one of the solutions (if possible) to what I need to do. If anyone else can help me with a way to control anything remotely without a wireless Internet connection, possibly even if its only 3G/EDGE/HSDPA Thanks

Posted by kaotix 10 years ago | last reply 10 years ago


can i talk to multiple arduinos at the same time with another arduino, in a serial format?

Hello all, I am trying to talk to multiple (say 4) microcontrollers (Arduinos) at the same time. I was wondering if i can setup a serial connection, with a selection line that can detect the neighbor Arduino and enable the corresponding pin to start the serial communication between the two. something like this:

Posted by karimskarim 3 years ago | last reply 3 years ago


How to make a simple wireless digital communication circuit?

Hey, i want to make a simple wireless digital communication circuit. This is not exactly what i'm going to do, but this is the easiest way to explain it: watch the image below. What should i build inside "box ?(1)" and " box ?(2)", to make the 2 LEDs turn on when i push the button? The first circuit should be like a transmitter and the seconds one a receiver, but i just don't have any idea how to make this simple circuit. I don't really know what frequency it should be at.. What's the easiest to make and works for the longest distance without problems with background radiation? (I'm sorry if this is a stupid question but i really a noob in hardware development... :p ) Thanks for helping! Evert

Asked by eds1999 4 years ago | last reply 2 years ago


How to build your own soccer/football referee communication system?

Hi, if you are a soccer/football fan, then you have seen soccer referees in UEFA, EPL, and World Cup matches wearing and using a communication system to talk with one another. An example of this is here: http://www.crescentcomms.com/ A similar system is offered specifically for dental offices: here (NOTE: actual that website shows a lot of interesting equipment) The problems associated with this system are: -Too expensive -Too many wires -Too many pieces of equipment -Too heavy to wear (a transmitter is strapped to your shorts as you run around) -Uncomfortable to use as you are running and sweating People can build their own cheaper systems by buying 2-way walkie talkies, headsets, batteries, arm straps, etc. off the shelves.  But it retains all the drawbacks. What I really envision are the following: -Secure communication (i.e. set channel/frequency) for at least 4 referees -Open communication (i.e. no need to push to talk) -Each referee wears a bluetooth headset like this one made by Platronics -Adjustable ear pieces as needed -Need to work for at least three hours straight at one time -Ideally powered by small lithium batteries (like those used for watches) -Ideally power source should be rechargeable or somehow be able to plug into USB or outlet for recharging As you can see, I really would like to see something built that can eliminate the wires, the weight, and discomfort.  Keep it super simple to use and equip.  If anyone has suggestions, please offer them. 

Asked by shl_junk 7 years ago | last reply 3 years ago


soft serial communication on Arduino Micro.

Hello all, I have a few Arduino Micro units, and need to connect them together (in a mesh network) so that every unit in it is interchangeable, meaning that any unit may be in connection with more than one unit. As the Master/Slave form is out of question at this stage (because any given unit cannot be both Master and Slave at the same time, of course) I decided to go for a simple serial communication. However the Arduino Micro units (and frankly none of the Arduinos) do not have sufficient serial pins and I was advised to use Soft Serial instead. I was looking into the pin out of the Arduino Micro but cannot quite figure out which pins I can use for the serial comm.; I need 4 to 6 serial communications. Any help is much appreciated, as the nature of the problem may not be changed. So I need to solve it as it is. Karim.

Posted by karimskarim 3 years ago | last reply 3 years ago


peer to peer communication between Arduino Micros, serial? half-duplex?

Hello all, I have a few Arduino Micro units, and need to connect them together (in a mesh network) so that every unit in it is interchangeable, meaning that any unit may be in connection with more than one unit. As the Master/Slave form is out of question at this stage (because any given unit cannot be both Master and Slave at the same time, of course) I decided to go for a simple serial communication. However the Arduino Micro units (and frankly none of the Arduinos) do not have sufficient serial pins and I was advised to use Soft Serial instead. I was looking into the pin out of the Arduino Micro but cannot quite figure out which pins I can use for the serial comm.; I need 4 to 6 serial communications. If not Micro, what other Arduino (or any other solution) would you suggest? Each unit needs to have the following information ready at its serial ports: - its ID - its MAD - sensor value (analog or digital) Any help is much appreciated, as the nature of the problem may not be changed. So I need to solve it as it is. Karim.

Posted by karimskarim 3 years ago


Using Arduino For Communication Device?

Hi there, I'm currently working on a University project for my Final Year and currently have some proposed ideas for a social device which can be worn or attached to clothing. My plan is to create a device which sends messages or other information using a sender/receiver which then stores the information, ready to be read later either through USB or simply viewing it on the device itself. It may even work in a similar way to another, similar project I have found on Instructables (see below). The user would simply wear this item of clothing in a specific environment (such as a nightclub - speaking hyperthetically) which would allow communication between people just by walking past another person with the same device. Think of this as a close-proximity, P2P-type device for communication. https://www.instructables.com/id/Arduino-Lilypad-Interactive-Passion-Sensing-Scarf/ I have talked the project over with my peers and found that there are two main options to creating such a device, which are: - Use several Arduinos (one for each user) which send and receive information via RFID Readers/Writers (again, a set of each for each user) attached to the board. One problem with this is that it will be incredibly bulky and unlikely to survive being washed or put through the punishment that clothing often takes on a daily basis. - Use a central Arduino board which receives information from Arduino XBees which receive information from the central Arduino and are sent information back from it. One problem with this is when several devices come into contact with each other, the central Arduino will be unable to tell which message has come from and should go to another device. However, one plus point with this is that I've heard XBees (Series 2 only) will be able to send and receive information on their own and are incredibly small. If you have any ideas on how this device could be produced or if you have any comments on the above, please let me know. I would greatly appreciate any feedback you may have. Cheers, KugarWeb.

Posted by kugarweb 8 years ago


Mounting Science Museum Walkie Talkies to bikes

Hello, I have two Science Museum Walkie Talkies and I was wondering if anyone had any ideas for mounting them to bikes?

Posted by ShaunHill 10 years ago | last reply 10 years ago


cb

This is for all of you who still use cbs or are looking to install one for fun or work.  come on in and share ideas for mounting get ideas or just laugh at funny mounts.  i will put up more picks as i track down cars i have put them in.

Posted by abadfart 8 years ago | last reply 8 years ago


Serial communication between PC and picaxe 28X2

Hi, I am having problem in communicating with PC with Picaxe 28x2. Please help me in solving this problem as it is a very important project My aim is to send the values of w1 and w2 variables ( values of the ultrasonic range sensors 1 and 2 ) to the PC and display them with the help of VB my picaxe code is ..., #picaxe 28x2 main: pulsout C.1,2 pulsin C.1,1,w1 pause 10 pulsout C.2,2 pulsin C.2,1,w2 pause 10 sertxd(#w1,#w2) pause 100 goto main and my VB code is , Imports System.IO Imports Strings = Microsoft.VisualBasic Public Class Form1 Public Declare Sub Sleep Lib "kernel32" (ByVal dwMilliseconds As Integer) Dim WithEvents serialPort As New IO.Ports.SerialPort Dim PicaxeRegisters(0 To 1) As Byte Private Sub Form1_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load Timer1.Enabled = True Timer1.Interval = 5000 End Sub Private Sub Timer1_Tick(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles Timer1.Tick Call SerialTxRx() End Sub Sub SerialTxRx() Dim labelstring As String = "" Label1.Text = "" If serialPort.IsOpen Then serialPort.Close() End If Try With serialPort .PortName = "COM1" .BaudRate = 9600 .Parity = IO.Ports.Parity.None .DataBits = 8 ' 8 bits .StopBits = IO.Ports.StopBits.One .ReadTimeout = 1000 .Open() .Read(PicaxeRegisters, 0, 2) .Close() End With For i = 0 To 1 labelstring = labelstring + " " + Str(PicaxeRegisters(i)) Next Label1.Text = labelstring Catch ex As Exception MsgBox(ex.ToString) Label1.Text = "Timeout" End Try End Sub End Class I have not included the write command, since I have not included qualifiers in the picaxe code. The Picaxe chip is sending the values ( I used the terminal in picaxe programming editor to realise this) but the visual basic is not displaying me the actual values sent by the picaxe chip. It is showing random values instead ... So i think that there is an error in the VB code. PLEASE HELP AS SOON AS POSSIBLE .. Thank You 

Posted by santhoshR 7 years ago


Will a 49MHz transmission work underwater?

I'm building a small device that needs to go to a depth of only a few feet in swimming pool water (I'd say three feet at the most) working on an arduino. I wanted to make it radio controlled and was planning on using a standard 49Mhz RC car circuit connected to the arduino. I don't want to keep the antenna above the water line and was wondering if a 49 MHz would work underwater.  I know higher frequencies like those in Bluetooth don't work underwater.Preview Topic

Posted by sidgupta 3 years ago | last reply 3 years ago


Full Duplex Wireless Audio

Hi, I'm in need of some help with a project I'm working on. I'm looking to build a handsfree two way audio communication circuit but I've been getting very confused when looking at material online and don't know where to look or how to even start. I've been looking into full duplex communication but I have no idea how to implement this in a circuit I could build. I'm confused as to if I would need a microcontroller (probably an arduino) or not and what transceivers and antennas to use. If anyone could show me where to look or help me get a starting point your help would be much appreciated. Thank you.

Posted by ArnoldM27 10 months ago | last reply 10 months ago


make a throat mic?

I want a throat mic for paint ball or anything else involving loud environment or when i need to be quiet.  the problem is they are expensive so i was wondering if anyone could help me in making one

Asked by abadfart 8 years ago | last reply 1 year ago


I have TWO 38GHZ P-Com 13833 Sattellite Uplink/Downlink. Can anyone think of something cool to do with them?

http://www.launch3telecom.com/tele-pcom38ghz.htm Take a look at the above site.  Mine are just like that. Any suggestions?

Asked by razerzpeed 8 years ago


Amplify FM transmitter range?

Http://www.lucidscience.com//projects/Basic%20Spy%20Transmitter/8.jpg  This all relates to the picture linked to above I was not sure if I could put an amplifier before the antenna to boost the signal going to the antenna extending the range anyone know for sure it seems to make sense 

Asked by Algag 8 years ago | last reply 7 years ago


How to send information between 2 HC-05? Answered

I need to send a number from 1 Arduino to another using 2 HC-05. I have followed the AT setup and connection in this video https://www.youtube.com/watch?v=hyME1osgr7s. I have successfully connected 2 HC-05 module but I can't get the master to send a relatively large number to the slave. I uploaded my code and result--serial command is the slave's (Basically I want the slave to receive the number and print onto serial screen, but it doesn't happen) Another question is if I want to send 3 integers in a row (Like 23, 34, 56) and let the other receive as 3 different integers (int1=23, int2=34, int3 = 56), how do I do that? Btw, how do I suppose to upload the files to Arduino properly? When I have the TX->RX0; RX->TX1 (Bluetooth pin to Arduino pin), I can't upload the file. I have to disconnect and upload, then it seems to upload but doesn't work properly. Thanks in advance.

Asked by Shizen 1 year ago | last reply 1 year ago


Hi how do we join the community ? Answered

Asked by Coolloom 3 years ago | last reply 3 years ago




Café Twin Arts and Science Community Advisory

Http://cafetwinctv.blogspot.com/ Cafe Twin Community TV Show__ A Bridge to Music and Science with conversation and project development on a community level and via community twining as demonstrated post World War II in Europe with leadership from France and Germany Twitter ID: waldenthreenet

Posted by cafetwin 6 years ago


How would i make a c.b radio chat room of sorts for me and my friends?

I would like to have free communications between me and my friends, why? I have nothing to do right now, so this project should be entertaining. I would also like to be able to include video possibly, i have the slightest idea on how so anyone with a good idea pls help me out!

Asked by knuckel 7 years ago | last reply 7 years ago


How do I send and receive data on an arduino via wifi using a router with Open-WRT?

My friends and I are building a remote controlled turret (call it cliche, I think it's awesome). They have charged me with the programming and design of the motor chassis. I read the MAKE: article on a Roomba that was controlled via a serial out on an Open-WRT router. However, with the turret, I would find it much more easier to use an Arduino interface. Is there any easy way to communicate between a router running Open-WRT and an Arduino? Thank you for any help.

Asked by spel3o 7 years ago | last reply 7 years ago


Annual Instructables Community Review

Hello, everyone, I would like to share with you my experience in this community for about 7 years of being a member here. Instructables members are very talented and very reliable also they are supportive. The community helps me to grow as an enthusiast in technology. This community is very educational. I really recommended this community for any makers around the world. I love being a member here and show what I made. I believe sharing is caring, so if we share each other's idea our world will be better for the next generations. I am lucky of being part of Instructables Community since 2009! (Wareneutron) P.S. Review this community by leaving a simple reply to this post! I hope everyone will share their thoughts and opinions or even feedback about this growing community of makers.

Posted by WarenGonzaga 1 year ago


Why don't old /community/* urls redirect to new /topics/* urls????

All of the older links to a topics on Instructables link to instructables.com/community/page urls, but a while ago (I'm not sure exactly when) all the /community/* pages were moved to /topics/*. Clicking the old /community links returns a 404 error, which is annoying because then I have to manually replace the "community" with "topics" in the url. So my question is, why can't all the /community/*/ pages redirect to their respective /topics/*/ pages?

Posted by scitronboy 5 weeks ago


What does it take to become a member of the community team? Answered

I would really like to be a member of the community team on instructables, can anyone tell me if there is a way to do so or is it just not possible for me? Thanks!

Asked by vishalapr 7 years ago | last reply 4 years ago