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Description: These wireless receivers work with our 434MHz transmitters. They can easily fit into a breadboard and work well with microcontrollers to create a very simple wireless data link. Since these are only receivers, they will only work communicating data one-way, you would need two pairs (of different frequencies) to act as a transmitter/receiver pair.
Note: These modules are indiscriminate and will receive a fair amount of noise. Both the transmitter and receiver work at common frequencies and don’t have IDs. Therefore, a method of filtering this noise and pairing transmitter and receiver will be necessary. The example code below shows such an example for basic operation. Please refer to the example code and links below for ways to accomplish a robust wireless data link.
Based on 8 ratings:
I tested these against some that I got on Amazon and some that I got on eBay. I found that these (with an antenna of just a hunk of wire) gave me 30 feet more distance than the others. I checked the output on a scope and these had much less noise at a distance where the others gave up. My results will eventually be on our open source home monitoring system: https://github.com/TeamPracticalProjects/SISProject
I have 8 Ambient Weather sensors located around the house that transmit data approximately once every minute. This receiver works great at picking them all up. Highly recommend.
I used this for a weather station. With an antenna I easily get communication at 20 yards through the house and likely much further (have not tested). Extremely easy to use with the accompanying transmitter.
I rated this as excellent because for the price it is an excellent RF link. This Rx is located in my basement and receives a signal from a Tx in my garage which is approximately fifty feet away. Plus it is simple to wire and easy to program my Arduino UNO to use it.
Great receiver. Easy to get going (I used VirtualWire with an Arduino) and reliable. Very pleased with it, especially considering the price.
My bad. I’m new to radio gear. I followed a project that recommended the older superheterodyne receiver. It’s been discontinued, but this one hasn’t. Turns out this one is a crappy super-regenerative board.
For the minute difference in cost it should have been the other way around. Why sell things that annoy customers, when vastly superior products are available?
This unit is very noise sensitive. My 3D printer washed out the signal, rendering it useless anytime I’m printing.
After looking at a different (forked) project (https://github.com/scruss/Powermon433#user-content-quick-start), I see this is the worst of the 3 types of receivers available. Sparkfun carries the best (https://www.sparkfun.com/products/10154) - but it’s 3V and at over 5 times the cost (plus you have to solder in your own headers).
There are superheterodyne receivers available (sadly from elsewhere) that are a drop in replacement. I found one and now I have no more lost packets while printing. Perfect.
Sorry Sparkfun - I like your company, but please replace this (d|r)egenerative unit with a superheterodyne one.
PS: Thanks for taking time to reach out and make my experience better! Looking forward to more little red boxes in the future.
Got these (TX and RX) for an basic wireless project, got them up and running in no time with the VirtualWire library for Arduino (http://www.airspayce.com/mikem/arduino/VirtualWire/).