TI Deals Open : EZChrono at $24,50 only
http://tideals.com/ (http://tideals.com/)
Ordered mine :)
[quote author="tayken"]Ordered mine :)[/quote]
Same here.
Are you guys planning to build sensors for it ? I'm looking for rf chips that could interact with it wirelessly (i ordered the 868mhz version)
I got mine long time ago and immediately after it arrived I contacted http://www.bm-innovations.com/ (http://www.bm-innovations.com/) and got from them both a chest strap (came up VERY HANDY in last few weeks while I was monitoring my new threatment for rapid heart rate and high blood pressure) and some transcievers, I took SPI, USART and USB versions!! ... They have some nice documentation for them, the boards are nicely built and easy to include in your own projects
I ordered the 433mhz version. I am planning to use it with my computer kind of press a key and a script runs scenario at first. I'll think about other stuff later.
why 433 ? iirc 433 is discontinued, 868 and 915 are the only ones transceivers are still being made, not sure when exactly it happened but I remember reading it first time in december 2010 - the 433 version peripherals are not being made any more. (check out BMI for e.g. they too attm only produce 868 and 915 versions of monitors, transceivers, pedometers, cycle meters, heart monitors ...)
868 is for Europe and India and 915 is for N. & S. America according to the product page. Japan has pretty strict laws regarding RF instruments, so 433 was the only way to go for me. :S
[quote author="arhi"]I got mine long time ago and immediately after it arrived I contacted http://www.bm-innovations.com/ (http://www.bm-innovations.com/) and got from them both a chest strap (came up VERY HANDY in last few weeks while I was monitoring my new threatment for rapid heart rate and high blood pressure) and some transcievers, I took SPI, USART and USB versions!! ... They have some nice documentation for them, the boards are nicely built and easy to include in your own projects[/quote]
Nice, i'm planning to buy the chest strap (the discount code that came with the watch helped - free shipping! ;-).
You're talking about BM-MM5 ?
http://www.bm-innovations.com/index.php ... m5_en.html (http://www.bm-innovations.com/index.php/support_bm_mm5_en.html)
I've found bare cc1101 chips on ebay and whole modules (but for 433mhz - but they should be programmable for 868) for 10$ - its worth trying.
I'm planning to make a bike sensor as BMI promises one for a long time.
[quote author="kabturek"]
You're talking about BM-MM5 ?
http://www.bm-innovations.com/index.php ... m5_en.html (http://www.bm-innovations.com/index.php/support_bm_mm5_en.html)
[/quote]
yes and CS5 and USBD1 ... MM5 comes in both UART and SPI version so be sure you order one that you want, but iirc none of them comes in 414 version
[quote author="arhi"]why 433 ? iirc 433 is discontinued, 868 and 915 are the only ones transceivers are still being made, not sure when exactly it happened but I remember reading it first time in december 2010 - the 433 version peripherals are not being made any more. (check out BMI for e.g. they too attm only produce 868 and 915 versions of monitors, transceivers, pedometers, cycle meters, heart monitors ...)[/quote]
Is this still the case?
I would assume, 433Mhz would be superior over the other two frequencies. Simply because it's available in all world wide regions. Also traveling from/to the US would make that also easier to work with.
Finally, Dash7 works only on 433Mhz and I believe that has been hacked into the chronos already. Isn't 433MHz better at penetrating stuff?
I think that BM-Innovations discontinued 433MHz versions of their stuff is because the 868/915 is easier for them, it only requires minor modifications, if at all.
Or am I completely wrong here?
well, not sure what's best. 433 is lower freq so in theory could pass trough stuff better, yes there are few projects on 433 only but for me it's more important what I'm going to use it with, and 433 being discontinued here and there is a problem for me. Also, 433 uses different hw from 868/915 (difference in hw between 868 and 915 is a single resistor, all other changes are in sw)
so, really donno, ti offered all 3 .. it's up to you to decide what's best for you.
anyone checked metawatch-es, they have only BT or some other freq's and proto's also ?
[quote author="arhi"]well, not sure what's best. 433 is lower freq so in theory could pass trough stuff better, yes there are few projects on 433 only but for me it's more important what I'm going to use it with, and 433 being discontinued here and there is a problem for me. Also, 433 uses different hw from 868/915 (difference in hw between 868 and 915 is a single resistor, all other changes are in sw)
so, really donno, ti offered all 3 .. it's up to you to decide what's best for you.
anyone checked metawatch-es, they have only BT or some other freq's and proto's also ?[/quote]
I was hoping 433MHz would be more future proof :) oth, with everything moving from 433MHz, it'll be nice and quiet again ;)
the metawatch, is that the one with the e-ink screen from kickstarter? I believe that it is only BT and hardware/software is closed source. Only the sdk/protocol is available to send/receive data with.
Edit: no it wasn't: http://www.kickstarter.com/projects/597 ... nd-android (http://www.kickstarter.com/projects/597507018/pebble-e-paper-watch-for-iphone-and-android)
no metawatch is TI + Saphire or some famous watch maker combo ..
http://www.metawatch.org/ (http://www.metawatch.org/)
http://youtu.be/4hXM6paYOME (http://youtu.be/4hXM6paYOME)
http://youtu.be/BPCcas1Xr3E (http://youtu.be/BPCcas1Xr3E)
they have some reflective screen that looks incredible good in the sun (more readable then anything I ever seen)
I really liked the e-ink screen on the pebble. But it was just way to darn expensive, and way to closed source to my liking.