Happy New Year to all!
I hope 2022 brings you good times and some fun new IOT projects!
I just downloaded KiCad 6.0 as a present to myself, so I predict some new PCB designs are in my future for 2022 : )
@NeverDie said in Most reliable "best" radio:
What all does the elder care entail? If it's just supervision, maybe you can provide it using your automation skills.
Thanks for asking. Yea, I thought of assigning a robot to the task of caring for my mother, but then I would be cast to the dungeon of my own making. Broken-hip, surgery, Rehab, Discharge - it is complicated and demanding. Fortunately we have skilled nursing and CNA's to do the bulk of the hard work. But getting mom's 'extended' taxes done, pain management intervention, arranging for PT, OT, Surgeon follow-up, rehab facility discharge, hemotologists, PCP's and where to land... it is a full time job. And then there is emotional support visits for the patient, my mom, while stress among sibilings and spouses becomes damaging. We all live too long.
Yea, programming radios is my relief: develop, test, then correct. Far less human, and far more certain and way more fun. And when you are done for the day... you simply go to sleep. Sweet!
I've been rereading this thread this evening. I'm glad for the record as I can relearn - even from myslef. So many great ideas that need further work by me. My 433 ASK transmitters are now controlled by 328P chips because the transmit times can be limited to 200 mS at about 6mA. I know, some of your radios can transmit faster but I'm just now divorcing my HT12E and HT12D chips and that is going to take time. Baby steps.
On my new config (Barebones/SR501 motion detector/433 transmitor, the sleep current seems to be about 62 uA and that supports the SR501 motion detectors. That power dominates the energy profile of the device and is near the shelf-discharge of the battery - so it doesn't deserve much study. But the speed of the radio transmission does warrent further study since that is the high current period.
@NeverDie today I re-read the fcc rules and I may have mislead you back in https://forum.mysensors.org/post/111853
It seems like the fcc rules say that if you use more than 500kHz bandwidth, you don't need to use frequency hopping, and there is no dwell time requirement.
(2) Systems using digital modulation techniques may operate in the 902-928 MHz, 2400-2483.5 MHz, and 5725-5850 MHz bands. The minimum 6 dB bandwidth shall be at least 500 kHz.
I don't understand why fcc encourages applications to hog a big portion of the spectrum but it looks like you can go willy-nilly if you just use enough bandwidth.
@mfalkvidd If things go sideways in the "you know where" region of eastern Europe, such that they affect Sweden, feel free to open a thread and ask for help. I'm sure everyone on this forum will do their best to get you any information or other resources you might need to adapt to events as they develop.
@NeverDie DipTrace stores all components with the project file, so you can open it on any computer and extract components from Schematic or PCB as a library. Also it automatically saves all project components into design cache, which is immediately accessible as a library with all its functionality.
@qqlapraline Those are some quick times for assembly! I usually am doing a board with parts they don't stock, so I have only used them for assembly a few times, and not recently, so it's good to hear.
@NeverDie I've used JLCPCB a bunch of times now, and I have yet to find an error that affected the board electrically. I've found small things like sloppy printing or some rough edges of the copper, but always small, and like I said, it has yet to cause an issue for me. For prototyping they're really hard to beat.