MINI Back to the Future Clock

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Intro: MINI Back to the Future Clock

I decided to make a mini version, for all those who have 3D printers a bit smaller or want to have a more discreet model.

The dimensions are : 160x55x100 mm (length x width x height)

I tried to make it as simple as possible to make, but you have to know how to solder and send an arduino code.

Follow every step and everything should go well !

STEP 1: Printing

You should have these parts:

  • 1 top
  • 1 middle
  • 1 bottom
  • 2 sides
  • 3 back covers

STEP 2: Assembling

I use superglue to assemble all the printed parts.

STEP 3: Painting

I use metal grey spray paint.

2 or 3 layers are generally enough.

STEP 4: Wiring Displays

You have to "chained" each display line (red, green and yellow).

STEP 5: Soldering AM-PM Leds

You have to prepare 4 leds with resistors and wires.

2 greens, 1 red and 1 yellow.

Be carefull : the leds diameter is 3mm NOT 5mm

STEP 6: Gluing the Leds

Glue the leds into the holes.

STEP 7: Installing the Displays

To put them in place, you just have to force them a little.

You should hear a little "clip" noise when it's in place.

STEP 8: Soldering the Red and Orange Leds

Solder the red and yellow leds on the displays (5v and GND).

STEP 9: Wiring the Supplies

Connect all the 5V and GND together with terminals.

STEP 10: Cutting ESP32 Pins

To get some room is you have to cut the ESP32 pins off.

STEP 11: Wiring DIO and CLK Inputs

Connect the DIO, CLK and green leds to the ESP32.

STEP 12: Uploading the Code

You can choose between theses 4 code files : 12h or 24h display, with or without automatic change daylight saving time.

Libraries :

TM1637 by Avishay orpaz

Wifimanager by Tablatronix

Ntpclient By Fabrice Weinberg

ArduinoJson by Benoit Blanchon

STEP 13: Setting Up the Wifi


The clock will provide an access point named "BTTF_CLOCK". I explain every step in the video above.

STEP 14: Sticking the Labels

I used a self adhesive sheet to stuck the labels.

STEP 15: Finished Great Scott !!

Comments

Hi there,
Is there any way of not implementing WIFI into this. I would like to make this a portable clock which can tell the time even when moving it around.
Is there any way of doing this or is it only WIFI related?
Thanks