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Questions tagged [virtualwire]

20 questions
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4 answers

RF remote control using VirtualWire on ATtiny85 running at 8MHz on internal oscillator

I'm trying to make an RF remote control using ATtiny85 running at 8MHz on internal oscillator, this cheap RF 434MHz transmitter module (like the one below), and VirtualWire lib, but had no success so far. So, before I go any further, is it…
Ricardo
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5 answers

433mhz range optimization

I would like to get the best range possible from my 433MHz modules. After A LOT of searching and reading, I'm convinced I should be able to cover 10m indoors with free line of sight. [update] After some tips in the comments I changed a few things.…
Thijs
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1 answer

Arduino keypad and RF 433MHz transmitter problem

So, the basic idea is that user presses a key on keypad, and key that is pressed is sent with RF transmitter. I got individual parts to work(keypad and transmitter), but can't send the actual key. When I try to send it, I get a strange string on…
Milos Tosic
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2 answers

RF 433 Module with VirtualWire: transmit and receive using the same Arduino board

I was wondering if it was possible to work, in the same Arduino board, both Transmitter and Receiver RF 433 MHz modules. Is it feasible? Here is the schematics I tried: 1) a pushbutton toggles a state value (0 or 1) and triggers the RF transmitter…
Rodrigo Hjort
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2 answers

RCSwitch on Attiny85

I would like to use my Attiny85 as an remote controlled relay switch. I have already tested the sketch on my Atmega328 and it worked. Now I wanted to burn the sketch on my Attiny85 using ArduinoISP but I get the following error in the…
xDarcade
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Duplicate a garage door key

I am trying to copy my garage door key. I opened it and found out it has dip switches which you can flip so you can send different codes. It uses 12 bits and operates at 315Mhz. I bought a 315Mhz transmitter for arduino and i am trying to send that…
Arduino Learner
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Encoding clock signal into linear block codes

In the VirtualWire library, it is possible to encode the clock signal as the library is doing with 4b/6b coding. This is possible because VirtualWire uses convolutinal coding, where the information is spread along the sequence. But, is the same…
Jonathan
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2
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4 answers

Sending sensor readings from Arduino to Raspberry Pi over 433 MHz

I'm building a garden monitor, so I got myself an Arduino Nano, a soil humidity sensor, an air humidity and temperature sensor as well as a luminosity sensor. Since I had not one but two Raspberry Pis laying around I thought I'll handle the…
janosrusiczki
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how to write a program in Arduino that pairs a single Rx to multiple Tx modules? i want to learn implementing this protocol

I have two Attiny85 communicating over 433mhz radio (Rx & Tx on either ends) using virtual wire library, how will the programming be to pair them by the press of a button on either module ? i have so far been able to pair them both through the…
phoenix99
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ATTiny85 VirtualWire AnalogRead 1

My ATTiny85 is connected to a 433 transmitter and an analog sound sensor. The 433 is working fine (using VirtualWire) but when I send the reading from the sensor all I receive is a 1. What I would like to receive is the value between 0 and 1024 like…
Thijs
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433MHz sending not receiving

I'm trying to send data using these cheap parts. When I check the voltage on the data port of the transmitter, I see what I expect, 1.2 and 0.6 fluctuating while sending. But when I check the receiver I get 0. I've got 3 of the sets and tried them…
Thijs
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VirtualWire `vw_get_message`: docs and examples on the PJRC site

I'm looking at he following page, that describes functions from VirtualWire library and provides some examples. https://www.pjrc.com/teensy/td_libs_VirtualWire.html Some basic questions I have after reading it: The description of vw_get_message…
AnT stands with Russia
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RF Remote Clone using NRF905

I have come across the various blogs which talks about cloning RF remote using cheap 434 MHz Tx/Rx and RCSwitch library. I tried using RF 434 MHz ASK (https://www.sparkfun.com/products/10532) module with arduino, but the range I get it very less ,…
user3301213
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Using both TMRpcm and VirtualWire libs with ATmega328, despite the conflict on TIMER1

I wanted to use both TMRpcm and VirtualWire with ATmega328 in an Arduino-like board I'm making, but both libraries use TIMER1. I wanted to use each lib for the following purposes: TMRpcm: play a WAV sound from an SD Card; VirtualWire: to receive…
Ricardo
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1 answer

VirtualWire send function

I am a little confused on how exactly VirtualWire's "send" function works. After looking at the code, the process I gathered is the following. In the Arduino IDE, call vw_send() with the right parameters. Inside this method, it will start to encode…
Jonathan
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