15-Segment clock

15-Segment clock using a 16x16 LED matrix. 
 

These numbers should look way nicer because of the round corners added to them and all numbers will have the same height which is imho always a design problem in the well known 7-segment display numbers… Also letters might be possible to display better as well…

• Super easy print and build. 
• 3 wires to solder only.
• No supports needed to print.
• Display can show Time, Date, Day, Month, Temperature and …?… (maybe you have a good idea?)
• The 2 lines of LEDs can be used for effects or special notifications/functions…
• Web interface to change settings.

Video:

Music credit: Used some free music from Apple iMovie
 

Parts needed:

• 1x 16x16 LED matrix (Use this one. The parts are made to fit to it only.)
• 1x ESP32 micro controller board (No ESP8266 use possible because of its low specs.)
• 1x USB power supply 5V / >=3A
• 1x Micro USB cable 3m
• 1x piece of white DinA4 paper cut down straigt to 160x160mm and used as diffuser.

Code: 

• The code can be found in my GitHub repository. 
• IMPORTANT: While adding the ESP32 board drivers make sure to select the version “2.0.17” of the “Espressif ESP32“ boards, not the ≥V3.0.0 version, which will not compile!
• The first version “V1.0.0” can display the current time and date.
• The shown web interface is included as well to control the settings.
• More functions will follow…

Web interface:

Printing instructions:

• No supports needed for all parts. 
• 0.3 draft profile used.
• Textured sheet used.
• Using a brim was not needed in my tests, because I cleaned my textured sheet with dishwashing liquid carefully with a sponge and then with isopropanol alcohol again on the printer to make the parts stick really good.

Wiring: 

• Connecting the parts for this clock is as easy as possible.
• You may need to solder 3 connections only to the ESP32
• The 4 small holes in the lid can be used for 2 small cable ties to secure the power cable
• Have a look into the pictures how to arrange the LED matrix in the front part to ensure that the direction of the LEDs is correct. Upload the code, test it and then close the case!
• Please check the table which pins are connected for the project as well as the pictures:

Some more ideas for this display:

Time / Date (included in V1.0.0)

Temp +36°C

Temp -12°F

Day: Sun.

Date: 30.12.

Happy printing :)