6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro mini

Post here about your Arduino projects, get help - for Adafruit customers!

Moderators: adafruit_support_bill, adafruit

Please be positive and constructive with your questions and comments.
Locked
User avatar
TwirlyWhirly555
 
Posts: 8
Joined: Thu Aug 07, 2014 4:46 pm

6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro mini

Post by TwirlyWhirly555 »

Hey ,

This was a little project I did from the shift registers and arduinos I got from adafruit : D

Video - https://www.youtube.com/watch?v=OOVk0ewZxIg , There is a start up pattern too .

6 digit clock is based on 6 6B595 shift registers and the 2 digit clock is based on a 16 bit led driver from max . Both use a i2c DS3231 RTC that is point soldered into place with battery backup .

Controller is a arduino pro mini on the 6 digit one and a arduino micro on the 2 digit one ( soon to be a pro mini ) .

Im not to good with shift registers on the code side of things so the program is just a lot of else if statements and shift out function to check the output from the RTC and to print a byte based on what is true .

ImageIMG_0933[1] by TwirlyWhirly555, on Flickr

ImageIMG_0934[1] by TwirlyWhirly555, on Flickr

ImageIMG_0935[1] by TwirlyWhirly555, on Flickr

2 digit one ..

ImageIMG_0936[1] by TwirlyWhirly555, on Flickr
Last edited by TwirlyWhirly555 on Sat Feb 21, 2015 4:47 pm, edited 1 time in total.

User avatar
adafruit_support_bill
 
Posts: 88093
Joined: Sat Feb 07, 2009 10:11 am

Re: 6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro m

Post by adafruit_support_bill »

Whoa! Cool clock. I love the free-form wiring.

User avatar
TwirlyWhirly555
 
Posts: 8
Joined: Thu Aug 07, 2014 4:46 pm

Re: 6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro m

Post by TwirlyWhirly555 »

Thanks ! : D .

I did make a second one that is abit more compact . It uses a Lipo Boost converter , 3 16 Bit MAX6971 CC led drivers and a DS3231 RTC / Arduino pro mini

ImageIMG_0947[1] by TwirlyWhirly555, on Flickr

User avatar
TwirlyWhirly555
 
Posts: 8
Joined: Thu Aug 07, 2014 4:46 pm

Re: 6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro m

Post by TwirlyWhirly555 »

This was the latest one , Boxed up with a Lipo Boost supply , soon to have a relay switch over to use USB power so the Lipo can charge and then switch back boost supply when USB power is removed , manual ON/OFF in both cases .

ImageIMG_1230[1] by TwirlyWhirly555, on Flickr

ImageIMG_1231[1] by TwirlyWhirly555, on Flickr

User avatar
adafruit_support_bill
 
Posts: 88093
Joined: Sat Feb 07, 2009 10:11 am

Re: 6 & 2 Digit Numitron Clocks , DS3231 RTC , Arduino pro m

Post by adafruit_support_bill »

Cool! Like the case too.

Locked
Please be positive and constructive with your questions and comments.

Return to “Arduino”