why mysensors is based on nrf24?
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@Reza have a look in the file. It's designed to offer clear understanding of the various configuration options. And gives you a good overview of what settings you can place in your sketch to configure the library to your needs (what radio to use, what channel, transmit/receive power, pin assignments, etc.)
@Anticimex said in why mysensors is based on nrf24?:
have a look in the file. It's designed to offer clear understanding of the various configuration options. And gives you a good overview of what settings you can place in your sketch to configure the library to your needs (what radio to use, what channel, transmit/receive power, pin assignments, etc.)
thank you dear friend . i will see and read and translate .thank you
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And do not forgot about law restrictions in some countries, EU and etc.
For example with 868 Mhz your device can transmitting max 1% of time per one hour.
Maybe problem for gateway node?
2,4 GHZ is relatively free all over the world.
Page 7 here@kimot this is true . but also about 2.4 Ghz i think there is better modules.what module is using in raspberry pi 3 ( without antenna) or wifi router or milight modem or etc ... !? These are 2.4 Ghz . But working for more distance without any problem . i dont test esp8266 (12-12E and very new models) but Don`t you think this is work better ? I didnot work with any radio. Just nrf and a sender with receiver 433 .
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Now for a wifi gateway mysensor used NodeMCU with a esp8266. Then connect a Nrf to NodeMCU . sensor network is with nrf and connection between router and gateway is with esp8266. If esp8266 work good , can we use esp8266 module for each node ? I did not work with esp and this is just a idea
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Now for RGB controller i use this module with domoticz. This modem dont have any external antenna... But work in a good distance without problem and need to a repeater...
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Have you checked power consumption on esp8266 (and other wifi modules) compared to nrf24? You will probably be surprised..
Some friends of mine are using esp8266 for their sensors (not mysensors related), battery life is below 1 month (if I remember right), even when the esp8266 is sleeping most of the time. I have 4 sensebender micros (with nrf24l01+) running of batteries for 2 years now, so yes you can use wifi etc. but the battery life will be lower..
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dear @AWI i dont have problem with wired and NRF and i know i dont have problem with power for NRF. i have a good connection with 5-6 meter with a for example 20cm wall ( i think this is the best of distance for usual NRF . but Whatever increase distance , so increase lost paket...
now i use this modules and wire for NRF :
use regulator and 2 capacitor 100u and 10n
i mean just about connection. all mysensors library feature is excellent . really perfect . just connection is weak by NRF. -
Have you checked power consumption on esp8266 (and other wifi modules) compared to nrf24? You will probably be surprised..
Some friends of mine are using esp8266 for their sensors (not mysensors related), battery life is below 1 month (if I remember right), even when the esp8266 is sleeping most of the time. I have 4 sensebender micros (with nrf24l01+) running of batteries for 2 years now, so yes you can use wifi etc. but the battery life will be lower..
dear @tbowmo i know NRF is very low power consumption but power consumption is just an advantage . we must see other issue.
if we will want use nodes without battery , so power consumption is not very important.you consider we want use a sensor for example 20 meter away gateway , so we must use a repeater ( this means that we must buy a additional arduino , radio , wire and adapter ) also we must turn on a new node(repeater) and additional power consumption . while if we use a stronge radio with more power consumption so i think this is better .this true that power consumption is increase but we remove a repeater node :)
can i (i am not a professional programmer)setup my network with a stronge radio ? or just mysensors team can setup this ?
esp8266 is a stronge radio?
thank you -
dear @tbowmo i know NRF is very low power consumption but power consumption is just an advantage . we must see other issue.
if we will want use nodes without battery , so power consumption is not very important.you consider we want use a sensor for example 20 meter away gateway , so we must use a repeater ( this means that we must buy a additional arduino , radio , wire and adapter ) also we must turn on a new node(repeater) and additional power consumption . while if we use a stronge radio with more power consumption so i think this is better .this true that power consumption is increase but we remove a repeater node :)
can i (i am not a professional programmer)setup my network with a stronge radio ? or just mysensors team can setup this ?
esp8266 is a stronge radio?
thank you@Reza look, a lot of people agree that the radio works fine when proper components and design is used. It will remain to be supported by the core library and the community. Alternative radios have been presented to you.
You say that the power to the radio is good. Have you measured that? You don't think putting a huge number of sensors on the same device, all consuming power and adding noise to the system combined with a rats nest of cables has an impact on the radio performance? You could put any radio in that environment and it wouldn't perform any better. -
dear @tbowmo i know NRF is very low power consumption but power consumption is just an advantage . we must see other issue.
if we will want use nodes without battery , so power consumption is not very important.you consider we want use a sensor for example 20 meter away gateway , so we must use a repeater ( this means that we must buy a additional arduino , radio , wire and adapter ) also we must turn on a new node(repeater) and additional power consumption . while if we use a stronge radio with more power consumption so i think this is better .this true that power consumption is increase but we remove a repeater node :)
can i (i am not a professional programmer)setup my network with a stronge radio ? or just mysensors team can setup this ?
esp8266 is a stronge radio?
thank youI don't use repeaters in my setup, I have up to 15m between gateway and nodes, and I don't see package failures. Even with brick walls in between.
Power supply is number one cause to troubles with nrf radios, so verify that it delivers a clean 3.3v, filter it with capacitors etc like so many have suggested in other threads. Also verify that you don't have something else using the same channel on 2g4, or an adjacent channel, as this can also give you troubles
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this problem is for several month for me and i test with one relay and one sensor and some regulator and capacitor and etc... and i am be tired and accept i can not have better connection. so this is not my issue now . just i offer a suggestion .
if you can add a stronge radio with long range and more power consumption (for people that need long range and power consumption is not important for them.)Anyway i am thank you for your trying :pray:
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Well, as many have pointed out now, they don't have problems with range on the nrf and for even better range, use rfm, so why should we look for other radios? The ones we support are perfectly adequate.
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Well, as many have pointed out now, they don't have problems with range on the nrf and for even better range, use rfm, so why should we look for other radios? The ones we support are perfectly adequate.
@Anticimex
i read myconfig.h and i think if i understand right , with RFM we can set 3 different frequency . but we can not have several channel. is that right ?
there is a defect in each radio :/
thank you dear friend for answer -
Sure in myconfig.h, you can only set 3 freq for the moment, but this is not a rfm69 problem. It's because for the moment the driver is still lowpowerlab based.
Lot of improvements have been done, and a completely new rfm69 driver will be released in future, including this feature ;)
I agree too, esp8266 is too power hungry for simple sensors node.. -
Sure in myconfig.h, you can only set 3 freq for the moment, but this is not a rfm69 problem. It's because for the moment the driver is still lowpowerlab based.
Lot of improvements have been done, and a completely new rfm69 driver will be released in future, including this feature ;)
I agree too, esp8266 is too power hungry for simple sensors node.. -
this problem is for several month for me and i test with one relay and one sensor and some regulator and capacitor and etc... and i am be tired and accept i can not have better connection. so this is not my issue now . just i offer a suggestion .
if you can add a stronge radio with long range and more power consumption (for people that need long range and power consumption is not important for them.)Anyway i am thank you for your trying :pray:
@Reza I don't know the source of the module you use, but the modules with same outfit did not perform really well for me.
I have linked some modules in this thread, which work very well for me.
There are modules with higher power consumption with PA, but other modules (without PA) may also work in higher ranges.If there are other transmitter near the frequency you use, it affects the range and packet loss you may see - so, you may also check it.
I may use a stronger module (with PA) using appropriate antenna for the central transmitter/receiver and another module (maybe without PA) for battery-driven parts. Good antenna is mandatory for both parts.
Anyway, 433 / 866 / 315 MHz frequency bands have much better wave propagation, but have much more limitations by regulations and not all frequencies can be used in different places of the world...
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@Reza I don't know the source of the module you use, but the modules with same outfit did not perform really well for me.
I have linked some modules in this thread, which work very well for me.
There are modules with higher power consumption with PA, but other modules (without PA) may also work in higher ranges.If there are other transmitter near the frequency you use, it affects the range and packet loss you may see - so, you may also check it.
I may use a stronger module (with PA) using appropriate antenna for the central transmitter/receiver and another module (maybe without PA) for battery-driven parts. Good antenna is mandatory for both parts.
Anyway, 433 / 866 / 315 MHz frequency bands have much better wave propagation, but have much more limitations by regulations and not all frequencies can be used in different places of the world...
@VaZso thank you friend for answer , i am using several model (different radio) with pa and without pa. but with just one model i had a good connection. so i think other models(with pa+lna and simple ...) all is fake!
sorry friend just a question.
how much most range that you test with simple original NRF (without pa+lna) ? how meter with how Barrier (cm) ? without any lost packet and failed.thank you
this moldel :) According to told Producer , this module can coverage 2000 meter. but i could connect this for 15meter with 60cm brickwall.
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@VaZso thank you friend for answer , i am using several model (different radio) with pa and without pa. but with just one model i had a good connection. so i think other models(with pa+lna and simple ...) all is fake!
sorry friend just a question.
how much most range that you test with simple original NRF (without pa+lna) ? how meter with how Barrier (cm) ? without any lost packet and failed.thank you
this moldel :) According to told Producer , this module can coverage 2000 meter. but i could connect this for 15meter with 60cm brickwall.
@Reza Internal walls and special circumstances may affect range very badly in 2.4 GHz band.
Even fake modules may allow relatively high ranges, but the quality of the antenna also highly affects the range.We have not really tried two modules without PA...
I had communication for about 50-70 meters in one of my very first tests using the worse modules I had, in open field...Otherwise, we could achieve ~1.2km in open field one module using PA and other module without PA.
There was a straight open field between modules and ~1.2km was the maximal range where they could communicate (with packet loss).
That case when something was inside them, the communication stopped. Till about 1km, the communication was very well in the same setup while it was completely open field.
One module had a relatively good antenna (and PA) with authentic IC inside, other one had a PCB antenna with counterfeit IC...The 2000 meter for that module is sure to be in open field using two modules with PA and good antenna.
Walls are lowering the coverage. -
@Reza Internal walls and special circumstances may affect range very badly in 2.4 GHz band.
Even fake modules may allow relatively high ranges, but the quality of the antenna also highly affects the range.We have not really tried two modules without PA...
I had communication for about 50-70 meters in one of my very first tests using the worse modules I had, in open field...Otherwise, we could achieve ~1.2km in open field one module using PA and other module without PA.
There was a straight open field between modules and ~1.2km was the maximal range where they could communicate (with packet loss).
That case when something was inside them, the communication stopped. Till about 1km, the communication was very well in the same setup while it was completely open field.
One module had a relatively good antenna (and PA) with authentic IC inside, other one had a PCB antenna with counterfeit IC...The 2000 meter for that module is sure to be in open field using two modules with PA and good antenna.
Walls are lowering the coverage.
