gres
Full Member level 4
It’s a universal soft that can work with any pair of simple transmitters and receivers 433MHz type or 833. I used 3 pairs of difference transmitter/receiver.
I decided to make a ranking after my experience with AUREL that completle cant work with RS232. another were TELECONTROLLI – much better. You can get 4800bps on that, which is not extremely fast and with low range. Finally I got Vellman.
Assumptions for software:
1. transmitting without breakage. Data receiving with brakage like for example at RC5 in irda.
2. possibility of sending data (more than 1 Gigabyte at one frame. In this situation we send 8 bits (full byte of data) plus 5 bits – for additional needs,plus 1 bit for togglebit as in RC5
3. elimination of broken frames
4. faster data transfer – compare to RC5 standard. In RC5 length of single bit takes 1,77us, here we have possibility of smooth regulation at can get 200us with telecontrolli, and 500us with aurel.
As a final result, I can say that everything works fine, and RANGE INCREASE PRECIPITOUSLY in compare to RS232.
As a summary I can say that the best one is telecontrolli – range at open space up to 300m. at house can cover full flat 100 square meters. Bit length = 200us
Aurel takes second place – range at open space, similar to previous, in the house also similar. Bit length 500us
Vellman takes third –range at open space = up to 50m with big errors. In the house works very bed. Bit length 1800us
As a antenna I used wire with length = ¼ wave for 433 MHz frequency.
All systems tested in the same conditions with ATmega8 processor. Code written in C.
More information at https://www.elektroda.pl/rtvforum/topic1566129.html
