Cant find this watch, is it still being produced?

https://hackaday.io/project/175577-hackable-nrf52840-smart-watch

Is that the temperature? Brrr!

The same company

https://www.smawatch.com

seems to be releasing a SMA-Q3. Unfortunately it's also glued together. Maybe it has the same/similar internals? It's cheaper as well, but only has one button.

https://www.alibaba.com/product-detail/2020-Best-seller-Smart-watch-SMA_60760372855.html?spm=a2700.icbuShop.41413.11.2f735091ktt8FK

Edit: lol, check this out:

https://fccid.io/2AKUO-10/Letter/Family-model-letter-3314061

they're declaring that differences should be marginal between a SMA-Q2 and an SMA-Q3. 

Good find with that FCC document.

I have been monitoring the SMA alibaba page, but sadly I don't see any potential in their new designs. I really miss physical buttons.

I wonder how this thing is supposed to work with only one button without a touchscreen. Some of those cheapo trackers have a touch button but that's also lame. It's a shame. The SMA-time was such a perfect concept. And then came the sealing madness.....and then the whole thing disappeared. Ridiculous.

I'm playing with Aaron Christophel's P8/Pine Time firmware at the moment which is really cool too. The P8 is ubiquitous and costs 15 rediculous € and for some reason has almost the same pinout as the Pine Time. The latter looks better and will be available for some time I hope. 

But still: nothing compares to the cool memory lcd. Would take it over any of those fancy AMOLED things.

I'm hoping the Q3 becomes more widely available and does not disappear as fast as the Q2 did. I'm really digging all the sensors it has. Still, one button + touch screen is better than just one touch button, as the Kospet DK08 has.

What about the other models? they got a ton, the M3 even has GPS

Seems to be available in some stores, but the price has raised significantly (up to $80). Did anyone found a reasonable price at any place?

I tried fasttech and eventually they informed it was discontinued. I bought a Kospet DK08, mostly to get the screen (which is worth double on digikey): https://www.gearbest.com/smart-watches/pp_009567360092.html?wid=1433363

Do you know about the difference between Q2 and Time? They are differently priced and have a different external case

They are the same thing. Some time after release they redesigned the case: new buttons and glued together instead of screwed. I actually have one of the old ones. The electronics are the same.

Cool thanks. I bought the TIME from fasttech as it has screws as you mention (the Q2 is already the newer one without screws).

Fasttech has answered that the TIME is discontinued. I asked if they can ship the Q2 but my guess it will be the same.

If anyone finds a link for the TIME or the Q2 it would be really appreciated. It is too bad that such a hackable smartwatch with this display and chip is no longer to be found =(

Does anyone knows where we can find this watch these days? It's seems it's not on aliexpress anymore!

Unfortunately it's been sold out and out of production for months.

Fasttech.com claims to have some, but that may be bs.

Thanks for this! That's what I thought. I'll look at fasttech to see what's up. But this would be a perfect platform for my sailing autopilot remote project!

Anyone bought from them? Would like to know if they are legit

Hi.

I am using Emeryth/sma-q2-oss firmware, and  Emeryth/Gadgetbridge  application
During pairing, a red crash appears on the watch.
E:4001,0,200048EC
E:0x3
Someone can advise something?

this might be the same problem like here https://github.com/Emeryth/sma-q2-oss/issues/3 - could be solved

I'm a big fan of this project.  I got the watch, toolchains, and compiled everything.  I modified my source to display date/time in my preferred format and weather info in my preferred units.  I'm going to write a watchface now, and I soon hope to be able to incorporate it seamlessly into the UI.

Cool! I just found out about this. Can one just buy a smartwatch and flash away?

if you follow the directions exactly, sure.  Notes: NRF SDK version 11.0 is not the latest.  When you install android studio, make sure to install the version 28 API and accept its licenses.   You have to use python 2.7 (deprecated) to install nrfutil 0.5.2 to package the zip for DFU.  After that, it really is easy mode.  I'm using mingw-w64 on windows x86 on my home computer, but it was far easier to get everything to compile using cygwin on the work laptop.  Mostly, I had to apply the twi patch by hand because getting "patch" is nontrivial on windows.

I suspect this would all be trivial on a linux system that has a robust tool suite already. 

Preliminary and dirty Arduino firmware III is out. 

https://github.com/BigCorvus/SMA-Q2-Firmware-3

It's usable as a basic watch with Nordic UART service now. Power consumption is about 50µA so it lasts about 10 days. Accelerometer works, but the HR sensor does not. At least I get the library to compile within the IDE.

Emeryth , would you mind sharing your current progress? I'm too curious.

How expensive is this to make?

The watch costs around $40 on aliexpress.

Have you heard about the PineTime watch? Sounds interesting: https://wiki.pine64.org/index.php/PineTime

Yes, I hope this will lead to more interest in some kind of open smartwatch ecosystem.

I still think the SMA-Q2 has superior hardware :P

some interesting discussion about coding for for the SMA-Q2 using the Arduino IDE has been going on under this video lately:

https://www.youtube.com/watch?v=3gjmEdEDJ5A&t=825s

https://www.forward.com.au/pfod/BLE/LowPower/index.html is a low power mod for the sandeepmistry core which implements some slightly weird but also convenient stuff. I've written a custom SMA-Q2 firmware based on this core now. Power consumption is quite nice. (45µA with display on and 500ms advertising interval, with some thin current spikes in between). Code will be published as soon as it has matured a little.

Thanks for the info. I know this project looks dead, but I *am* working on it slowly.
Recently I got very close to getting the heart rate sensor to work.

I have also had success with adding very basic support for my firmware to Gadgetbridge, which is an android app for managing smart watches.

That's great news to hear! A project log once in a while couldn't hurt, even if it was just a photo of your testing rig, or a short "now working on this". Just saying.

Great! I assume you're still using the Nordic SDK? Which IDE are you using? Ireally like Segger embedded Studio that is easy to use withe more recent versions of the SDK, but I havent't managed to make it work with the SDK 11.0

Aaron Christophel was able to find a precompiled algorithm library for the PAH8002 by the manufacturer so they seem to be around somewhere...are you using that in your implementation too? I heard that otherwise these sensors are hard to get useful data from the wrist area....

Btw. the first revision of my nrf52840 replacement board seems to have bugs on it and is not working properly. Was able to upload the bootloadervia SWD and it even showed up as a USB device once but now I can't upload anything anymore. Dammit. I have to overcome my laziness and finally publish the current design.

Yes, I'm using Nordic SDK. As for IDE I'm using regular eclipse with gnu arm eclipse plugins for debugging over openocd.

I just got PAH8002 to work using that precompiled library. I get reasonable readings now.

The drawbacks are that it's not open obviously, and it needs 13kB of RAM to run.

But looking at the raw waveforms from the sensor, it really needs some serious DSP.

I hope to publish my basic firmware soon.

Awesome! Really looking forward to having a look

Currently designing a custom replacement board with an nrf52840 module somewhat based on the feather board. It will also feature a https://abracon.com/realtimeclock/AB-RTCMC-32.768kHz-IBO5-S3.pdf RTC which is supposed to make programming easier. It will take care of generating the extcomin signal and minute-wise updates of the display. In between the updates the MCU can be turned off completely which will lead to very low  overall power consumption of the watch. That way one can just write Sketches for the nrf52840 without having to engineer low power stuff, so one should have a reliable device capable for everyday use. The final design is supposed to have native USB for DFU und other communication via the charging cable which has a USB plug connected to the  four contacts anyway. The accelerometer will be a BMA400 and the heart rate sensor based on https://pulsesensor.com sitting on a custom flex PCB connected to an analog input.

Hi everyone, I just got one of this watch and I am trying to see how I can program this. Has anyone manage to program this using OTA.

I have some experience in writing programs for the nrf52832 and can compile and upload programs onto the nordic development boards for testing. I am however clueless on how I can actually upload some program onto the watch using OTA.

Which SDK version do I need to use? I am using Keil. So I just compile my program as what I use to do and generate the Hex file. I am able to put the watch to OTA mode, and I have transferred the hex file to my mobile phone running the nRF toolbox app. I start the DFU program on my phone and I selected the hex file as an application. Then I got this message:

**********************

Init packet

Do you want to select the init packet file?

The init packet file (*.dat) should contain the device type and revision, application version, list of supported Soft Device and firmware CRC in binary format.....

*********************

I don't know what to do and where to find this file. So I just clicked Yes, and select the same hex file again.  I then select the device, in this case the phone see  the device "Dfu10B10". I selected this and click on UPLOAD.

Then the app just stays at Uploading..... Starting DFU....and nothing happens. 

Now the watch is forever stucked in the OTA mode.

You have to use SDK 11.0 to be compatible with the old softdevice that is on the watch.

To generate the update package I use an old version of nrfutil with the following command:

nrfutil dfu genpkg --application application.hex --application-version 0xffffffff --dev-revision 0xffff --dev-type 0xffff --sd-req 136 app_dfu_package.zip

See the original firmware package for reference what it should contain.

Hello, accelerometer is working with micooke library:

https://github.com/micooke/arduino-nRF5-smartwatches/tree/master/libraries

Just change the Wire interface in variant.h:

#define PIN_WIRE_SDA         (17u)
#define PIN_WIRE_SCL         (18u)

 Best,

Francisco

Gracias Francisco !!!

By the way, did you find a library for heart rate sensor ?

Best,

Fabian

No I didn't.

I was trying to port one that I found from mbed, but inside the code It calls to a file with an algorithm from the company that built the chip. And that files seems that is not on the web.

Best,

Francisco 

Hi, anybody implemented a step counter with this accelerometer or have any reference code ?

Thanks,

Fabian

Hi Francisco,

Have you developed anything for the heart rate sensor this year ?

Best,

Fabian

Display library is online now. https://github.com/BigCorvus/ColorMemLCD

The example also explains how to feed the watchdog.

The RTC library is here: https://github.com/arduino-org/arduino-core-nrf52/tree/master/libraries/RTC. If you use the Adafruit core 0.8.5. only the line #include "nrf_clock.h" has to be commented out and the library works.

Having trouble getting the accelerometer to work. Tried several libraries without success. 

Hi, I'm waiting for my samples to contribute. By the way have you tried this library https://os.mbed.com/teams/Rohm/code/KX022/ ?

Haven't tried ports of the mbed lib you mentioned yet, but several other Arduino libraries instead.  (https://github.com/micooke/Kx022-1020, https://github.com/jgromes/RohmMultiSensor, https://github.com/goran-mahovlic/nRF51_ID107_libs) When I have some spare time left I'll hook up a logic analyzer and check the activity on the bus...

The power and reset management has to be done by the application itself: Created an example now: https://github.com/BigCorvus/SMA-Q2-Arduino

Still waiting for my samples :) There was a delay at Spain customs because of the batteries ... Any news about the accelerometer and or heart rate ? I hope to get my samples soon in order to contribute with the project.

unfortunately not. Lots of worki worki. But I've started coding the library for the heart rate sensor. Ordered another device so there is one for development and power consumption measurement and one for actual usage ^^

Hi, Arthur. I'm receiving my SMA-Q2 on Monday, if you have any work of accelerometer and/or heart rate please share in github or any place to collaborate in the development.

Thanks,

Hi Fabian

unfortunately, my time for the hobby is virtually non-existent at the moment, but my first steps in writing the PAH8002 library are here: https://github.com/BigCorvus/PAH8002/blob/master/README.md 

This is just a starter and the code is not working yet. It has to be brought into shape with adaptation of the I2c write/read functions etc.. Feel free to contribute ;) If I advance, I'll update the repository.

Hi Arthur,

I received my SMA-Q2. I compiled https://github.com/BigCorvus/SMA-Q2-Arduino with AdaFruit 0.9.1 to avoid nrf_clock.h error and exported binary and then create de zip with nrfutil-0.5.2 of AdaFruit 0.8.5. I used NRF tools selecting the zip and when I have to select ALL, SYSTEM or APP I selected APP. The firmware was uploaded the progress bar in OTA of SMA-Q2 reach the end  but the application never started. Any idea ? Do you think the problem could have been to use 0.9.1 core instead 0.8.5 I have other SMA-Q2 but I want to recover this one I hope with having to disassembly the watch. Please give me any advice.

Thanks ,

Fabian

I think you should compile this firmware only with the core it was written for (0.8.5 in tihis case). Throughout the core updates the Adafruit folks might have implemented changes that are not compatible to the sketch. 

We do not necessarily need the newest core here since we have an old softdevice at our disposal. The potential do implement fancy stuff via the low level API is still there with the 0.8.5 core I think. You just have to study the examples of the "raw" nordic SDK und port the functions you need to Arduino. This is how I implemented the watchdog feeder for example. 

If the DFU screen is persisting, the error might as well be in the pin definition file for the display pins. Have you re-defined the SPI pins in the variant.h file? If the code is not running properly the watchdog might not get fed. Try holding down the OTA DFU button combo for at least 10s. Maybe the thing will reset and get into DFU mode. Otherwise try the back button for some seconds and then the up button to turn back on in case the actual code IS running without the display being driven properly.

Good luck!

Hi Arthur, I confirm your examples only work with Adafruit core 0.8.5. Now I have a working environment. Thanks !!!!

By the way I'll start with the accelerometer could you share your work to move forward from there ? 

well done! I'm curious what you will come up with. Unfortunately I didn't keep the code I for the accelerometer, mainly because it didn't work at all and because it was too simple (it would have produced a non-working primer sketch and nobody wants that!).

There are several Arduino libs for the KX022-1020. Just try them, most of them are easy to use. Don't forget to set the I2C pins in the variant.h file. I hope that you do better than I did. I just don't have the time to advance this topic right now, although I would love to.

Hi Arthur, I was trying to connect the accelerometer. The chip is there as it answers to the address but it doesn't. Did you have time to check the bus with a logic analyzer with the manufacturer firmware ? I don't have one ...  If you could get of the information exchange I could dig in the documentation and create a library.

It would be also great to have a dump for the pulse rate chip.

I hope you have a bit of time.

Best,

Fabian

Hello Fabian,

I´m using the library from micooke:

https://github.com/micooke/arduino-nRF5-smartwatches/tree/master/libraries

Just change the Wire interface in variant.h:

#define PIN_WIRE_SDA         (17u)
#define PIN_WIRE_SCL         (18u)

 Best,

Francisco

Happy new year!

I hooked up a logic analyzer to the accelerometer bus and recorded the activity upon power-up:

https://cdn.hackaday.io/files/854633656448992/accelQ2.txt

Still need to make sense of the data. 

Did you actually get useful data from micooke's library Francisco? I wasn't able to get the library to work. Thanks for joining us.

Best, Arthur.

Hi Arthur. Happy new year !!

For micooke's library try changing in variant.h  #define PIN_LED1 (17) to other pin. If I read in every loop and show the values in the display I'm having problems to show the values so I'm using something like: 

if (millis() - accSampleTimer > 20) { // 20ms = 50Hz 
    accSampleTimer = millis();
    acc.getAccelXYZ(xyz);

}

Best,

By the way if anybody can capture any data from heart rate please share the code. I'm trying to contact the manufacturer to get the algorithm if not i'll try to analyze the data to try to define the pattern to calculate the heart rate.

Thanks,

aaah OK, I didn't notice that pin 17 was already taken by the LED. Thank you! I'll try to capture the I2C communication on the heart rate sensor lines and upload the file. 

I don't think we necessarily need this algorithm. Most important ting is to interface to to the sensor, get the data and figure out how to get into low power modes etc. If we get the photoplethysmography data there sure will be some open source algorithm we can apply to get heart rate...or we just write our own.

What I find interesting is the power consumption of the original firmware. I measured it with a Current Ranger and during non-connected normal operation, displaying the time and advertising itself the device draws about 200µA with short 3ma spikes during TX. It should be a challenge to get power consumption down to this level, but theoretically possible. 

What I also noticed on the original firmware is that timekeeping is not very accurate. My device has a deviation of about 2 minutes/month. Already thought about hiding a tiny I2C real time clock somwhere inside the enclosure. 

Hi everybody,

data from the heart rate sensor is online now. I sniffed the bus with finger on sensor and without.

We have to get a second i2c bus working correctly with the bus in order to use both devices.

How cool is that. You can program this thing via the Arduino IDE easily by installing the Adafruit nrf52 core, which also contains an older version of the nrfutil (0.5.2 in the case of core version 0.8.5). With the following nrfutil commands you can generate the .zip files for OTA DFU from .hex files the Arduino IDE produces if you go to "Sketch->Export compiled binary"  (I'm working under windows):

C:\Users\[.....]\AppData\Local\Arduino15\packages\adafruit\hardware\nrf52\0.8.5\tools\nrfutil-0.5.2\binaries\win32\nrfutil dfu genpkg --application C:\Users\[.....]\Documents\Arduino\SMAQ2_test\SMAQ2_test.ino.feather52.hex --sd-req 0x88 C:\Users\[.....]\Documents\Arduino\SMAQ2_test\vibrotest1.zip

The --sd-req 0x88 stands for s132 2.0.1 on nRF52

You enter the DFU mode of the watch by pressing the "back" as well as the "up" and "down" buttons simultaneously (a little acrobatic) when the watch powered off. Alternatively press this button combo and reset the thing (by pulling the rst testpad (P0.21) to ground) or power-cycling it. 

Once in DFU mode the .zip file can be fed into the DFU tool of the "nRF Toolbox" Android app to program the device over the air.

I hope this helps somebody to get started quickly.

i received a newer SMA-Q2 instead of the older one. If you're patient you can open it from the upper side as you said, f.e. using a "sesamo opening tool". The problem is  that you'd have to glue it back together with some elastical glue with sealing properties which is annoying. The circuit board has a blue solder mask but is otherwise identical. I'm planning to include a tiny reed switch for reset purposes after which the thing will be glued together again.

Which platform do you use to program yours? Did you roll your own display library or is there one around which is wasy to modify (for example for sharp memory displays).

Thanks for sharing the fruits of your effort here. 

Great! Thanks for the info.

Even though I have a few spare watches, I couldn't get myself to wreck one.

As for the platform, I'm just using Nordic SDK 11.0 (for compatibility with the old softdevice already on the watch) and GCC.

The LCD is pretty simple to use, you basically just send pixel values over SPI. I think it is a clone of the sharp displays, so you can reference existing libraries.

Ok I have a working Arduino library for the display (ported from mbed) which uses the Adafruit GFX library and a working real time clock library based on the real time counter. Originally the latter was included in the "official" Arduino nrf52 core and worked almost out of the box with the Adafruit core. I already have a crude sketch that ties stuff together and demonstrates some fundamental functions too... Will publish everything on Github soon. Now it's time for the PAH8002. Unfortunately I've lost the programming application note and the files on Nextcloud are gone...any chance to get them back online? 

This hack has a lot of potential, What's quite cool about this OTA concept is that you can carry several different firmwares with you on the phone and just upload them on the fly if you need a certain functionality. The low power consumption of the nrf52832 is remarkable too. 

Sorry, we are having a rough transition to NextCloud, try this link for now:

https://owncloud.hackerspace.pl/index.php/s/fR7jom478oSoE8p

I have this watch and I think with a good firmware can be better than pebble. Keep going with this work, I would love to see the something cool in the end.