Tagged Questions

0
votes
1answer
21 views

xbee and interoperability

i'm studying interoperability in the telecommunication field and i want to know we must do what to have an xbee module interoperable with other zigbee devices of other manufacturers (not Digi). I ...
2
votes
2answers
190 views

Long Range RF communication

After playing with Arduino and different kind of sensors for my garden, now I'm starting a new project for my free time. I want to work with RF communications because I need a long range device for ...
1
vote
1answer
1k views

Problem with RF transmitter/reciever and VirtualWire

I'm trying to get an RF transmitter/reciever pair from digikey to work with my Arduino Uno/Mega ADK. But it seems neither the transmitter nor the reciever example are working with any of my Arduinos. ...
2
votes
1answer
287 views

Reverse-engineering RF packets

I have a Blue Line Innovations PowerCost Monitor. It sends packets to a display unit over a 433.92 MHz RF link. There is code (Power Monitor, incomplete) to detect these packets with a RF Link 4800bps ...
1
vote
1answer
642 views

Cheapest 5 meter wireless communication + microcontroller [closed]

I want to have two microcontrollers wirelessly communicate with each other (about 5 meters) (cheapest is radio or Bluetooth, right?) and then beep/blink an LED, etc. depending on whether or not there ...
3
votes
1answer
2k views

Error in using Arduino virtual wire

I have this 433MHz RF Tx and Rx pair. I tried to transmit using following simple Arduino sketch, given in the VirtualWire manual. ...
2
votes
0answers
166 views

Decoding 125kHz ASK signal [closed]

I'm looking to decode what seems to be a 125kHz ASK amplitude shift keyed signal (1 V p-p). I'm saying ASK, but it may not be the right term. It's basically a 125 kHz signal or a 1V constant voltage. ...
2
votes
2answers
3k views

Arduino Uno SoftwareSerial and Serial conflict

I have a very simple setup with an Arduino Uno R3 connected to my Windows 7 x64 with Arduino 1.0.1. I have a RF receiver connected to the Arduino on the DI10 port using the SoftwareSerial library. I ...
1
vote
0answers
403 views

RF transmitter without Arduino

I am trying to create a home automation system using Arduino, PIR and RF transmitter and receiver. So basically I thought about having Arduino which is connected to PC, which listens to RF receiver. ...
3
votes
1answer
481 views

2.4GHz Warmer/Colder game based on signal strength

I'm currently looking for options to build a 3 piece game for an outdoor activity company based around the warmer/colder game. Two teams are each issued a receiver, and each team starts around 400 ...
0
votes
2answers
777 views

Distance between 2 arduino's using rf links

I currently have a setup where I send a char using a Tx of 434MHz and an Uno to a Mega with a Rx. The Mega counts how many times it receives the char and then if it falls below a certain number it ...
2
votes
1answer
998 views

arduino rf communication: beginner

I would like to implement a home-automation system on my arduino. For this project I would like to communicate with the different devices by radio frequency. So that would be different 433 mhz ...
3
votes
5answers
4k views

Best way to send sensor readings over simple RF connection

I have bought a pair of simple 315MHz TX/RX modules. I want to use these to connect a battery powered ATTiny85 to an Arduino base station. The ATTiny needs to regularly wake up and send a sensor ...
0
votes
1answer
490 views

Correct way to wire an Alpha TX433S/RX433S

I would like to deploy some wireless, battery powered sensors around my house that will wake up regularly and send readings to an Arduino base station receiver. To keep the cost per sensor low I have ...
1
vote
2answers
575 views

Arduino pulse counting & storing

I'm using jeenodes from jeelabs for capturing data such as temperature, light, humidity and motion. Now I am looking to capture gas and water consumption using reed switches (the meters produce x ...
5
votes
5answers
1k views

Circuit to remove noise from digital communication line

Carrying on further from my previous post and drilling down to specifics, I am trying to figure out the right way to implement "glitch remover", or "noise remover", using electronics (i.e. not in ...
1
vote
2answers
818 views

Arduino - interrupt based decoding of serial data, race between ISR and loop()

Trying to decode serial data (encoded using proprietary method) from a RF module. Having switched back and forth between the fast-sampling (4x the fastest freq) and of late an interrupt based method, ...
0
votes
1answer
578 views

RF decode logic (not Manchester encoded) - Arduino

Continuing from my previous post, I am trying to decode the encoded RF data directly on Arduino. I've adopted the "sampling" approach, as against the "interrupt" based approach, reason being I believe ...
2
votes
2answers
575 views

Measuring duration and distances between pulses

I want to know how it is done (or at least how would you do) to measure duration and distances between pulses on a signal in a micro controller(or a better way). Example: I have a couple of Arduinos ...