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Topic: Pulsar, a medium-fast radio transmission system for analog/digital values (Read 1 time) previous topic - next topic

RIN67630

Hi folks,

it's yet only an advanced work in progress, all main functions are working.
I am still working on ancillary details,  like the LCD display and the own voltages reporting
but i think it could be good to throw it to the community, waiting for your comments.

https://github.com/rin67630/pulsar

 A powerful and versatile RF analog/digital medium-fast data transmission system.
 It provides a 1 Sec data transmission pace optimized to using RF transmission less
 than 1% of the time (a legal requirement for the 868/900MHz band):
 -optimised for long range: only 16 Bytes payLoad data and reduced transmission speed
 -safe transmission: echo verification, retry 125ms later and again 500mS later if NACK
 -real time scheduler:  data acquisition occurs with constant 125mS slices
 -transmits 4 analog measures 0-1V with parameters for range begin, range end, voltage dividers...
 -Preprocessing of analog data:
  a) averages 8 measures @ 125mS into one second value
  b) provides attack and decay filters to filter out irrelevant spikes
 -option to transmit [A0, A0 min, A0 max, A2] instead of [A1,A2,A3,A4]
 -reports digital data with 8 bits per input: one bit for every 125mS slice, so you can get a 125mS resolution on digital values (at the cost of an average latency of ~500mSec)


Paul_KD7HB

Hi folks,

it's yet only an advanced work in progress, but i think it could be good to throw it to the community, waiting for your comments.

https://github.com/rin67630/pulsar
Use of a spell checker would be a nice addition.

Paul

jremington

Quote
not yet functional
Can you at least suggest some reasons why people might eventually be interested?

RIN67630


Use of a spell checker would be a nice addition.
I see, that you could need one, yes!

For the time being, you might want to correct your "amature" radio manually.

SCNR

RIN67630

Can you at least suggest some reasons why people might eventually be interested?
Please do not quote incorrectly! The sketch is working perfectly for all main functions.

I have augmented the description (which was available on github anyhow).

jremington

Quote
Please do not quote incorrectly!
The quote was cut and pasted directly from your Github page, which you have since changed.

Most people could not be less interested in code that is not fully functional, so be sure to let people know when it finally works!

RIN67630

The quote was cut and pasted directly from your Github page, which you have since changed.

Most people could not be less interested in code that is not fully functional, so be sure to let people know when it finally works!
But you have cut the essential part: the mention that it was only a remark to explain the tag WIP on certain minor functionalities in the text.
At least that helped me to avoid confusions from the reader, thanks for that.
The code is functional to 90% I just did not finish minor adjustments

allanhurst

Interesting - but how is it different/better than the many protocols/modulation schemes in use today?

What power levels/modulation do you intend to use - are you designing the RF part? ( not easy)

FEC? QAM?

Why reinvent the wheel unless it's a much better wheel?

I'm not sure you can use a GSM band at all legally unless you have an operator's licence -  or am I wrong?


Allan

MarkT

I think the comment is meant to say 868 / 915MHz which are ISM band.

Anyway it uses 2.4GHz now and will move to LoRa, so that comment seems irrelevant.

Not impressed by the confusion apparant in the README, and its a .ino, not a library, so how can
that be used by anyone?
[ I will NOT respond to personal messages, I WILL delete them, use the forum please ]

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