Search found 51 matches

by turboscrew
Thu Dec 07, 2017 7:24 am
Forum: Off topic
Topic: Communication between a radio module and SV-613
Replies: 6
Views: 145

Re: Communication between a radio module and SV-613

I have tried with and without SV-613 device ID, device ID before and after length-byte, with 4, 8, 16 and 24 byte preamble, and with preamble inverted (instead of 0xAAAAAAAA I sent 0x55555555), but still no luck. Also tried different delays (20ms, 50ms, 100ms, 200ms) between the sent frames, but sti...
by turboscrew
Wed Dec 06, 2017 10:04 am
Forum: Off topic
Topic: am i the only one ?
Replies: 9
Views: 152

Re: am i the only one ?

BTW, the same seems to be going on with Finnish too, and probably with many other languages.

Like Frank Zappa put it in "The Blue Light":
...
You can't even speak your own f*cking language
You can't read it anymore
You can't write it anymore
...
by turboscrew
Wed Dec 06, 2017 9:56 am
Forum: Off topic
Topic: am i the only one ?
Replies: 9
Views: 152

Re: am i the only one ?

I do have to ask though, where is the tent? I thought only us Scots were daft enough to be sitting in a tent in the middle of December. Hello from Finland, where the draftees usually have a couple of weeks winter camp. Some of them, depending on the place they serve, get to camp in Lapland where it...
by turboscrew
Tue Dec 05, 2017 12:08 pm
Forum: Off topic
Topic: Communication between a radio module and SV-613
Replies: 6
Views: 145

Re: Communication between a radio module and SV-613

The picture is confusing. I guess that kind of versions did exist, but I think the most common version now is the USB-version. It has a built in CH341 and the SET is handled with a switch in the box. The manufacturer datasheet seems to be a funny mixture of older and newer version. In the same manua...
by turboscrew
Sun Dec 03, 2017 5:14 pm
Forum: Off topic
Topic: Communication between a radio module and SV-613
Replies: 6
Views: 145

Re: Communication between a radio module and SV-613

Now I got enough stuff to put together another CC1101-system. I used one CC1101 for sending the data and another to receive it. I used the same SW that I used for receiving the SV-613 data and trying to send data to SV-613. The stuff received from the SV-613 (from an earlier log): f_scan: 433829772 ...
by turboscrew
Thu Nov 30, 2017 9:07 pm
Forum: Off topic
Topic: Communication between a radio module and SV-613
Replies: 6
Views: 145

Re: Communication between a radio module and SV-613

Oh, sure... SV-613: http://nicerf.com/product_148_54.html Data: http://nicerf.com/Upload/ueditor/files/2017-06-14/SV613-100mw%20Industrial%20anti-interference%20wireless%20data%20transceiver%20module%20V4.1-37d71626-e1ef-42a0-b2c5-046adb02783f.pdf Uses internally Si4432: https://www.silabs.com/docum...
by turboscrew
Thu Nov 30, 2017 5:56 pm
Forum: Off topic
Topic: Communication between a radio module and SV-613
Replies: 6
Views: 145

Communication between a radio module and SV-613

Has anyone managed to send data from a radio module and receive it with SV-613? I'm running out of imagination. I have a blue pill with a CC1101-module and I can receive data from SV-613 with the CC1101-module, but not vice versa. The SV-613 even reports nice RSSI when the CC1101-module sends, but n...
by turboscrew
Thu Aug 10, 2017 7:29 pm
Forum: Off topic
Topic: USB-to-TTL
Replies: 2
Views: 289

Re: USB-to-TTL

Thanks! Not all the data sheet versions seem to have mentioned the internal regulator current, but this has: http://www.usconverters.com/downloads/datasheets/pl2303.pdf Page 15. And there someone has done some research. Note that he doesn't say the chip survives the 400 mA. :lol: http://nerdralph.bl...
by turboscrew
Thu Aug 10, 2017 2:14 pm
Forum: Off topic
Topic: USB-to-TTL
Replies: 2
Views: 289

USB-to-TTL

I bought some of these lately (well, different seller, but YP-01 on the bottom anyway). https://www.aliexpress.com/item/PL2303-USB-To-RS232-TTL-Converter-Adapter-Module/32643748009.html?spm=2114.search0305.4.57.OiruJX It says "500mA self recovery fuse for protection". Which overcurrent? I didn't see...
by turboscrew
Fri Jul 28, 2017 8:09 pm
Forum: Off topic
Topic: What is RSSI
Replies: 10
Views: 534

Re: What is RSSI

Thanks, Pito. Very enlightening. As such I think it doesn't matter whether it's energy or something somehow dependent of the energy... I don't, however, understand, how the time domain fits here. Is it because of the way digital filters work (basically difference equations)? I'd consider filters mor...