See [this] for more info about the watch.
Batch #2 progress: Completed
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- Top side
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- Bottom side
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- Double sided tape on display raiser, avoid the 2 larger holes at the top
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- Use 0.8-1mm sewing needles to help align the raiser
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- Raiser in place
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- Double sided tape on display
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- Display stuck down
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- Double sided 3mm foam tape for battery
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- Battery stuck down
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- Watch strap
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- Programming with the pogo adapter
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- Pogo adapter
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- N|WatchDev
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- N|WatchDev
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- Measuring current draw (MCU)
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Got my kit a few days ago and I finally soldered it up. Works great!!!
Author
Awesome! Glad you like it 😀
Soldered it!, Only got a blinking red light (lcd is off), any tips?
Thanks 😉
Author
Blinking red LED means it’s in the bootloader, should only stay in it for a second or 2. Probably resetting its self. Check around RN1 area for shorts, probably the lower 2 pins on the right of the network or the 2 MCU pins just below them are shorted.
Awesome advice, reflowed RN1, got one step further, buttons and sound work, but the display stays dark, any tips? 😉
More awesomeness ;P Did some rework on the display… it works. awesome kit!
Author
Whoo! Good to hear! 😀
Got mine in the mail today. The wait was long but it was totally worth it! what a great little kit/watch. All is working perfect and it was easier to assemble then expected. wish there was a few pieces of double sided tape in the box though.
Now after charging my watch all night i’ve got only 4010mv and the display has a weird darkness in the middle most of the time. they only time it doesnt have the strange dark band is when “exit” is selected in the main menu.
Any ideas?
Author
Is that the battery voltage measured by the watch or by a voltmeter? And does the watch say it’s fully charged when USB is plugged in (no lightning icon)?
Screen darkness is probably caused by a bad OLED connection to one of the charge pump capacitors, make sure the solder joints are all good.
You were correct. Re flowed the OLED and all is working great! Thanks!
Yay!! Finally bought one 🙂 I am so waiting for it! I wonder when will it arrive 🙂
Author
Yours is one of the later orders, so probably around mid/end of November.
Hi! do you know when mine will be shipped? thanks!!
Author
Also probably around mid/end of November.
when will my watch be shipped?
Author
Most likely near the end of October.
Hi Zack, I recently water damaged my watch by splashing a very small amount of water on it. After resoldering some components it’s now working fine again.
Anyway, I’ve discovered a good way to waterproof the watch and also enclose it at the same time.
1) Use epoxy resin to glue the OLED to the main PCB. Use lots of glue.
2) Get some white 38mm PVC tape.
3) Wrap it around the entire watch (including over the screen) from the left to the right so that the buttons and USB get covered. Go right around the watch with the tape.
4) Close up the sides of the tape to seal in the top and bottom of the screen.
5) Optionally use more tape to wrap around the watch maybe from top to bottom instead.
6) Cut away a rectangular slot for the screen (use a craft knife until you scrape on the glass)
7) Carefully cut away the tape around the micro USB socket and buy a rubber micro USB bung (I haven’t done this).
Here are my results so far (haven’t handled the USB yet…). I believe it will now be splash proof and it looks good and hasn’t got any sharp edges. 😀
http://i61.tinypic.com/zje2b8.jpg
http://i58.tinypic.com/28svbr5.jpg
Hello Zack, I stumbled upon this website from the YouTube video you uploaded of the DIY Digital Watch. The watch looks absolutely fantastic maybe a couple of aesthetic adjustments, such as a case to hold the contents and it’ll be perfect! I wasn’t able to purchase the watch soon enough 🙁 Would you perhaps be looking into creating a 3rd batch for the future? The watch is definitely a huge stand out compared to many commercial watches out there and I’d love to get my hands on it :D. Thanks bud and good luck with shipping the orders.
-Issa
Author
Thanks 🙂 I don’t think I’ll be doing a batch #3, but you can subscribe here to be notified about it if I change my mind.
Hello, I want to buy a set of self-assembly DIY Digital Wristwatch.
smirnovdaniil2017@yandex.ru
Author
Sorry, orders are closed now.
Hi Zak, what are your requirements for choosing a battery for this project? I know you have undervoltage protection but what other features are necessary for safe operation? Over-current protection as well I presume?
Author
Undervolatge, overvoltage and overcurrent. Overcurrent would be the main one since the charging circuit already does a pretty good job of not overcharging.
I have been struggling to get your firmware to run.
I built a breadboard of your watch_dev platform.
I can compile and modify your code. I am loading with USBasp and AVRDUDESS.
Code seems to be resetting every 14ms. Nothing on the OLED display. Green LED is blinking on/off every 7ms.
I don’t have a DS3231 installed yet. Could this be the problem?
I don’t seem to be returning from display_update() in main()’s while(1) loop.
Any ideas?
Author
Yeah there was a problem when the RTC wasn’t connected, check GitHUb for updated version which should fix that issue.
That fixed it!
Now display is working and Menus.
Next I will get and install RTC.
Which controller chip is in the 1.3″ OLED?
SSD1306 or SH1106?
Author
SSD1306. Though a SH1106 display shouldn’t be too difficult to get working, they seem to be mostly the same.
I went ahead and ordered 9 boards from OSH Park. I ordered enough parts to build 5.
I won’t use them all. Maybe some folks on this blog will want them.
Are there any traces running through the thin strips for the watch strap? Could these be removed to make it smaller if you want to make a case for it?
Author
There aren’t any traces around the strap holes, you can safely cut them off.
will my watch kit be shipped soon?
F Dastoor
Author
Yours was posted on the 24th, so it should arrive sometime next week.
will my watchs be shipped soon?
Author
Hi, yours is in the next lot to be assembled, but I don’t think they’ll be posted until shortly after Christmas.
Hi Zak,
As I haven’t received mine yet and I have had some time to “cool off” is there any chance you could refund my payment and offer the kit to someone else who is asking please.
Andrew
Author
Sure, but it’ll be about £2 less because the 60 day refund window has ended so the PayPal fee can’t be refunded.
Hey, maybe you have any info, when will my watch be sent?
Author
Hi, I can’t find any orders with your name or email, what was your order code?
Hey, my order no. is TFY0N7XF
Author
Alright, your order will be posted shortly after Christmas, don’t want it getting lost in all the extra Christmas mail.
Hello Zak,
I have ordered an unassembled kit. Is it possible to know when it will be shipped? Thanks in advance.
Author
Yup, sure thing.
Receiced my boards from OSH Park. Built two, they work great. I have some questions:
1. What are your fuse setting for AvrDudess?
2. What is your source for push buttons?
I printed some cases for them, see picts:
https://drive.google.com/file/d/0B8fpYRA11UJ9Z2hzX1M0VWg5MHc/view?usp=sharing
https://drive.google.com/file/d/0B8fpYRA11UJ9blVkLWsySm5SUk0/view?usp=sharing
https://drive.google.com/file/d/0B8fpYRA11UJ9SEJxakF4aVQ0eWs/view?usp=sharing
https://drive.google.com/file/d/0B8fpYRA11UJ9UXRPdzBuT1Y5Z28/view?usp=sharing
https://drive.google.com/file/d/0B8fpYRA11UJ9bGp3R3Roc3hBUUk/view?usp=sharing
https://drive.google.com/file/d/0B8fpYRA11UJ9bDkxaGQ4Q3Zyc1U/view?usp=sharing
If you want some cases I can send you some.
Author
Fuses:
Low: 0xE2
High: 0xDE
Extended: 0x06
These are the switches used: http://uk.farnell.com/jsp/search/productdetail.jsp?sku=9471987
You’ll need to make those pictures public 😛
You mentioned you had OLED failures. One of my OLED’s is slowly going dark from left to right. Ever see that?
Found the problem with OLED going dark. OLED was cracked on back side. I need to support the OLED better like your second PCB.
I made the photos public. Check them again.
Author
Yeah, if air gets into the display it will start fading. Nice work on the case 😀
Bill,
do you have still some PCB’s left ?
Yes, 3 I think.
Any chance you would share the case STL files? I would love to print one for my watch (I almost never wear it because of no case)
Hey Zak,
I’m very curious about the watch, I purchased one some months ago. Is it in the batch that’s shipped before Christmas?
(It probably might take some time to be delivered?)
Regards,
Vanhoucke
Author
Yours will be shipped after Christmas, should have it by mid-January.
It arrived! I’ll start working on it now 😉
Thanks!
Has mine been shipped yet?! Really looking forward to making it!
Author
Currently waiting for PCB and battery for yours, should arrive in the next week or so. Should be posted by the end of January.
Any updates on when mine will be shipped?
Author
Yours should be shipped in about 2 weeks, currently waiting for some PCBs and batteries.
any idea when my watches will be sent ?
Author
Hey, your watches and dev board were shipped yesterday, should arrive in 1 – 2 weeks.
all received in good order, thanks
I received some days ago. This watch is awesome. The alarm sounds loud enough for waking up. I really like this watch. Thank you very much, Zak! Bye.
Author
Glad you like it! 😀
Well, thanks a million Zak for your awesome kit ! It was not only a real pleasure to assemble, but it is also a very nice looking wristwatch, minimalistic and lightweight. Here’s how I did it : https://www.youtube.com/watch?v=tUd-Gur4BmM
I believe that both the hardware design and – especially – firmware development is a monument of knowledge for the AVR community. I think that it is a great resource for learning; down from the basics and up to advanced issues and tiny details that make a lot of difference in terms of code optimization. I wish there was existing a book describing this project in detail; would happily pay for it, since there is nothing similar that could include so many different aspects. Until then, I will try to understand as much as I can from your source code (I think I already got the whole picture regarding the schematic 🙂 )
Thanks again for sharing !!!
Author
Thanks and awesome video! A book is a good idea, but I don’t think I’ll be doing one :/
Dear Zak,
one of my 2 watches while wearing it on my wrist is showing half of the lines of the display.
Any solution ?
Author
Hmm, could you post a picture? Might be best to email me – contact AT zakkemble.co.uk
Hey, is my watch already shipped? Order no.: TFY0N7XF
Author
Your watch will be shipped early next week.
Hi i had just found out about this watch and have been interested in making one is there any estimations of when a batch 3 will be coming out?
Author
I have no plans for a batch 3 at the moment.
Do you have one or the parts for one just laying around that i could buy?
Author
Sorry, I don’t have enough spares around for another watch.
Nice bit of kit – I’m kicking myself as I have only just seen this and am clearly too late 🙁
How many kits did you end up making overall ?
Author
I managed to sell about 50 kits, with a 50/50 split between fully assembled and in kit form.
Just a notice for assemblers out there : be very careful with the amount of flux you are using when soldering the OLED strip !!! The flux is (or may be) conductive and, if trapped beneath the flat cable, it may cause shorts that will scramble visuals or even turn the OLED off completely.
If that happens, the OLED will start heating up. Disconnect the battery immediately and rework the connections.
Zak has already described this in the assembly instructions but I just want to stress it more.
My hours in the body.
http://i004.radikal.ru/1503/82/6cb4a34df1b6.jpg
http://s020.radikal.ru/i710/1503/23/0bd188c16918.jpg
http://s008.radikal.ru/i306/1503/38/4feb52ebf0aa.jpg
http://s48.radikal.ru/i119/1503/fb/9415a9a57a3b.jpg
Здравствуйте Сергей,хочу попросить Вас сбросить русскую прошивку для этих часов на мой Email.Буду Вам очень признателен.Моя почта lucifer161@rambler.ru
Заранее Вас благодарю.
ADMIN EDIT – Google translate:
Hello Sergey, I want to ask you to reset the Russian firmware for these hours in my Email.Budu you very priznatelen.Moya mail lucifer161@rambler.ru
Thanking you in advance.
I printed a couple of cases using the design from Petr Tosovsky. I find that the buttons in that case don’t really work, at least with the material we have available, they are too stiff and then they simply break off because the stalk is so thin. So I just reamed out the holes enough so I can push the switches, that actually works well enough.
My friend had some “glow-in-the-dark” material for his printer so he printed a case with that. At first I wasn’t interested but then i realized one big advantage – it makes the LED indicators visible. I posted a picture here:
https://flic.kr/p/qTCCny
nooooo im too late, please do a third batch i need this watch so bad.
The Board itself would be fine, i hate myself for beeing too late.
Author
Hey, for the boards you can download the .brd files from HERE and then upload and order them from OSHPark.
Hey, im selling this watch, because its an unwanted gift :(. If you are interested, write me an email: trdbot1@gmail.com
do u have schematic for the newer version and what are the values of rn2 and rn3. i brought the kit and lost some parts so this whould be very helpful
Author
Latest stuff is on GitHub https://github.com/zkemble/NWatch/tree/master/hardware/watch/1.4
RN2 is 47K (tolerance doesn’t matter) and RN3 is 10K 1%
Hi, i´m also selling a complete Kit, cause i have no time to assamble it. You can mail to: mash.m @ gmx.de
Thanks, Markus
Are you still selling the kit?
I’d be very interested in a fully assembled version using a 0.5 ppm or better MEMS (probably TXCO) oscillator. Any chance of that?
Author
Hey Tom, I can’t find any drop-in replacement devices with 0.5ppm. The only oscillators I can find with that kind of stability are crystal TXCOs, which means if you want an N|Watch with an 0.5ppm oscillator it’ll have to be more of a custom project. If you’re interested send me an email blog@zakkemble.co.uk
Hi!
It’s sad that I saw this project only now.
Will there be another batch of kits?
Kind regards,
Andreas
Author
Hey, sorry there are currently no plans to start any more batches.
Добрый день. Собрал часы по Вашему проекту.Все работает но часы при первом включении уходят в сон , а после того как зайдешь в меню и даже ничего там не изменять выйдешь часы в сон не уходят.Только после ресета принудительно.Подскажите куда посмотреть .Спасибо.
Good afternoon. Collected hours under your project. All works but hours at the first switching-on leave in a dream and after you will come into the menu and even anything there not to change there will be hours per a dream do not leave. Only after ресета forcedly. Prompt where to look. Thanks
Author
Little bit difficult to workout what you’re trying to say, I think you’re saying that the watch sometimes doesn’t go into sleep mode? Did you upload the .eep file, things can go a bit wonky without it.
Здравствуйте! Подскажите куда посмотреть, часы не уходят в спящий режим.Только после принудительного ресета
Hello! Prompt where to look, hours do not leave in a sleeping mode. Only after compulsory reset.
Author
Little bit difficult to workout what you’re trying to say, I think you’re saying that the watch sometimes doesn’t go into sleep mode? Did you upload the .eep file, things can go a bit wonky without it.
Да епром загружаю.Первое включение часы уходят в сон, зашел в меню , прокрутил, ничего не менял,вышел.Часы в сон не уходят.Принудительно делаешь Reset, часы уходят в сон.
PROMT
Yes епром I load. The first inclusion hours leave in a dream, has come into the menu, has scrolled, changed nothing, left. Hours per a dream do not leave. Compulsorily you do Reset, hours leave in a dream.
Все спасибо, разобрался.Был косяк с заливкой файла eep. Поправил, все заработало.
Promt
All thanks, has understood. There was a jamb with file pouring eep. Has corrected, all has earned.
Hello,
I am in France, can you tell me how can I get the kit? thank you in advance for your response. Gaëtan
Author
Hey, kits are no longer available. You’ll have to source all the parts yourself.
Hi,
Would it be possible for me to add the LIS3DH accelerometer and a microSD slot to this watch?
Author
Yup, though you’ll have to do modifications to the code and PCB design or wire them to the exposed SPI/I2C/UART pads.
I have been struggling to get your firmware to run.
I built a breadboard of your watch_dev platform.
I can compile and modify your code. I am loading with USBasp and AVRDUDESS.
Code seems to be resetting every 14ms. Nothing on the OLED display. Green LED is blinking on/off every 7ms.
I don’t have a DS3231 installed yet. Could this be the problem?
I don’t seem to be returning from display_update() in main()’s while(1) loop.
Any ideas?
Author
Hey Rick, it would work fine without the DS3231. What happens if you disconnect everything from the microcontroller and just leave the LEDs connected?
hi zak!
I am a hobbyist and a maker of electronics,I’d like to make your watch but not sure you will like the idea or not. I was wondering if we can use ATSAMD21 for this purpose. it has bigger memory and we wont need external programmer. I also can source a nice enclosure for it. I’d like to have one watch for myself rest of them i can send to you for free!
looking forward to hearing from you soon.
Author
Hey Fred, sure you can use a different microcontroller! I’d love to see how it goes, send an email to ‘contact (at) zakkemble.net’ and I’ll tell you the address to sent it to.