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Radio receiving signal

mdh last edited by

I have a relay and a motion sensor on the same node, and my sensors shows up in Domoticz as expected. Motion detection is also going through to the Domoticz, however I'm not able to receive incoming messages on the node to control the relay. It only works if I move the node closer to the controller.

So it seems like my radio is able to send messages, but are struggling when it comes to receiving. Can I do something on the sketch to improve that? My controller is using a NRF24L01+PA+LNA, while my sensor has a NRF24L01+
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Update RF24 library to latest version
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@andriej Hi, I had problem using the main branch mysensors/Raspberry, that because of the bit-field struct (header_s) in Sensor.h They will get packed in different order on the arduino compared to the RPi (at least with my compiler, gcc). In order to fix this I created the 1.4dev branch. It uses full bytes instead of the bit-fields, but you need (of cause) to compile both the sensors (arduino) and the gateway (RPi) using the 1.4dev branch. We need to fix this in the main branch later on (and use the same files as in mysensors/Arduino/libraries/MySensors)
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Some humidity sensors are known to lose accuracy with age. For instance, the Si7021 is known to have this problem. If that matters to you, then the best choice is to pick sensors that have datasheets and which have specs as to their expected longevity or accuracy over time. Then buy from mouser/digikey to be certain you're getting the real thing rather than factory rejects or counterfeits. For extra insurance, I avoid electrolytic capacitors entirely whenever possible. I buy only 7XR rated ceramic capacitors that are overspec'd. The difference in price is small compared to a failure down the road.
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General Discussion • • NeverDie

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It has been a long time but I’ve learned a few things that I wanted to share. This library of information (Thank you NeverDie and others) has been so helpful in my hobby developments. Software Defined Radios for signal analysis. With the help of Andreas Spiess explanation of IQ transformations, I learned about Software Defined Radios and I bought one (RTL-SDR). Using this I can clearly discriminate between effective 433 MHz transmitters and bad ones. Not only is the signal density displayed on the software (SDR#) but so is the frequency. Power Profiler Kit II has been indispensable in watching power usage and seeing into the details of the radio transmission. In effect this thing has saved me from buying an oscilloscope for my simple little bench. Tonight, I saw this video: https://www.youtube.com/watch?v=Z9nycymUd-I It describes common PCB errors. It is too advanced for me, but I did pick-up a few ideas about ground planes (tip #6 from the video). I hope this is of some value for folks.
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After re-installing the previous 32bit raspbian version, the gateway seems to work ok. It seems to me there is a problem with the 64bit version.
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General Discussion • • mimaret

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@mimaret It was a pleasure. Thank you for your feedback!
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General Discussion • • dirkc

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hey @dirkc, maybe you can trigger your interrupt to rising and falling edge and use millis() to see how long the press was?

Radio receiving signal

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Radio receiving signal

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Update RF24 library to latest version Bug Reports • • andriej

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