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DIXI watch - SAMD11

Take out maximum from super small arduino compatible ARM microcontroller

bobriciusbobricius
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1.3k views
8 comments
14 followers
21 likes
  • Description
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  • Files 0
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  • Logs 8
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  • Discussion 8
  • The 2018 Hackaday Prize
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This project is submitted for

  • The 2018 Hackaday Prize
  • Open Hardware Design Challenge
  • Tell Time Contest

This project was created on 03/14/2018 and last updated 3 years ago.

Description

compact4014 charlieplexed led displayextra thinARM mcu samd11c14arduino compatiblenative usbbuilt in USB connectorwhy sam D11 ?? soic14 ...is really easy for solder small package powerful arm M0 core arduino IDE supported native usb Recommend use Mattair tech Arduino core and bootloader https://github.com/mattairtech/ArduinoCore-samd if you want full featured product or If you want support please buy boards from https://www.mattairtech.com/

Project Logs
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  • Firts board assembled

    bobricius • 06/20/2018 at 22:20 • 0 comments

  • Finished and ordered 3014 boards

    bobricius • 05/15/2018 at 20:23 • 1 comment

  • New 3014 board with 4 digits

    bobricius • 05/03/2018 at 13:06 • 0 comments

    I am little redesigned board. think that is very effective, all free space is used and board can be used as watch module for any enclosure with user programming capability .

  • RTC working

    bobricius • 04/16/2018 at 22:17 • 0 comments

    I am surprised RTCZERO library for D21 working without changes, time is measured with acceptable precision. also work sleep and ad wake on alarm match. Sleep consumption is about 5uA.

    Is time to start work on new PCB with full 4 digits display and maybe with 3014 leds

  • wav !!!!

    bobricius • 03/29/2018 at 23:03 • 0 comments

    Something working ;) Lights are on, beeper beeping ;)

  • wav !!!!

    bobricius • 03/29/2018 at 23:03 • 0 comments

    Something working ;) Lights are on, beeper beeping ;)

  • First board assembled

    bobricius • 03/29/2018 at 22:08 • 2 comments

    yes, all is good on place, it is time to make software

  • Received boards

    bobricius • 03/29/2018 at 21:22 • 0 comments

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Matej wrote 08/06/2020 at 12:28 • point

Can you share the source code for this?

  Are you sure? yes | no

bobricius wrote 08/07/2020 at 11:57 • point

I have no code finished

  Are you sure? yes | no

josephchrzempiec wrote 06/05/2019 at 17:10 • point

hello which crystal are you using on the D11? Also where can i find one at?

  Are you sure? yes | no

deʃhipu wrote 04/14/2018 at 20:45 • point

What are you planning to use for power? Are you going to use the internal RTC of the SAMD11? I wonder if a micro-USB connector similar to the one at https://hackaday.io/project/28516-business-card-gamepad wouldn't work better here.

  Are you sure? yes | no

bobricius wrote 04/14/2018 at 21:16 • point

This test board is designed for CR2032, new board maybe with 3V Supercapacitor 5F I have plan use this connector in future but it need thin board and with this size it can be fragile.  I am using internal RTC and RTCzero library for samd21, alll work without changes + working sleep, wake on alarm match and wake on external interrupt = button. I need samd11 alternative for ReadVcc() function in atmega328. There is only 7GPIO for all leds, buttons and buzzer. Standby consumption is only 5uA. RTC precision is GOOD. I want use 3014 leds, they are exists in all colors, readability is good, tested on PyBox + replace connector on edge like in PyCard

  Are you sure? yes | no

deʃhipu wrote 04/14/2018 at 21:32 • point

Hmm, I vaguely remember there was a trick in atmega where you could measure internal reference voltage against the vcc, and calculate the vcc from that, but I can't recall the details...

  Are you sure? yes | no

bobricius wrote 04/14/2018 at 21:39 • point

Yes, on atmega it working good, arm is for my very complicated to found similar function. It is important for supercapacitor powering, it save IO pin and also save R divider.

  Are you sure? yes | no

Yann Guidon / YGDES wrote 03/17/2018 at 17:04 • point

4014 \o/

  Are you sure? yes | no

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