Digital Clock #3: Digital Clock LEDs finished and mounted

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Blog entry by Wes Grimes posted 09-25-2011 05:40 AM 1371 reads 2 times favorited 4 comments Add to Favorites Watch
« Part 2: Digital Clock LEDs Part 3 of Digital Clock series Part 4: Chips ahoy! »

About 330 wire ends stripped and soldered:

Rice paper sandwiched between two layers of plexiglass. I could have gone with smoked plastic for a more traditional digital clock. It would have been easier to read, but I am going for a “steampunk” effect here. So rice paper has been around forever and seems like the way to go…

Glue it all in. The wine really helps with precision… (No power tools were used during the stage)

Now for some micro controllers.

-- Wes, Garland, TX

4 comments so far

View rance's profile


4243 posts in 2579 days

#1 posted 09-25-2011 06:17 AM

I just now caught this build. This is way cool. I could get into a project like this.

How many I/O lines are required to drive the array from the Arduino? Are they multiplexed? I’d be interested in seeing your schematic. Are you writing the code yourself?

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

View Wes Grimes's profile

Wes Grimes

38 posts in 1861 days

#2 posted 09-25-2011 12:48 PM

The plan is to use six 74hc595 shift registers paired with six uln2003a drivers. This will mean that the Arduino will use three IO ports. Clock, Data, and Latch.
I am a software developer, and will be writing the code. The Arduino platform is pretty user friendly though and can be learned pretty quickly.
There is a nice easy small book available called “getting started with Arduino” that is geared toward non developers.
I will be posting the code in this series. I am not an electronics guy, so I will post a schematic if I can figure out a way…

-- Wes, Garland, TX

View CaptainSkully's profile


1407 posts in 2977 days

#3 posted 09-25-2011 04:54 PM

Unbelievably cool mashup of old and new. Looking forward to the tech info. My buddy built a Nixie clock last year.

-- You can't control the wind, but you can trim your sails

View lew's profile


11263 posts in 3174 days

#4 posted 09-25-2011 09:05 PM


As any great electronics tech, you have your “refreshment” close by ;^)

-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.

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