https://github.com/atoomnetmarc/led-strip-clock

Just a ESP8266 with some power shift registers to drive LED strips and make a clock.
https://github.com/atoomnetmarc/led-strip-clock

7-segment clock esp8266 kicad led-strips pcb shift-register

Last synced: 2 months ago
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Just a ESP8266 with some power shift registers to drive LED strips and make a clock.

• Host: GitHub
• URL: https://github.com/atoomnetmarc/led-strip-clock
• Owner: atoomnetmarc
• License: apache-2.0
• Created: 2021-05-01T08:25:54.000Z (over 4 years ago)
• Default Branch: main
• Last Pushed: 2021-11-13T08:54:39.000Z (about 4 years ago)
• Last Synced: 2025-02-03T20:49:58.871Z (11 months ago)
• Topics: 7-segment, clock, esp8266, kicad, led-strips, pcb, shift-register
• Language: HTML
• Homepage:
• Size: 5.97 MB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# Status

This project is in the idea stage.

Next step would be to test if the new schematic could work before ordering the first PCB.

# Why?

![](led%20strip%20clock.jpg)

I made a huge LED clock with pieces of LED strip in 2013 using an [ATmega328 and DS3231 RTC](ATmega328%20version/). It has been running great and keeping time just fine. Lets break it by upgrading it.

![](spagetti.jpg)

This project will upgrade the ~~spagetti~~ old circuit to an internet connected LED strip clock neatly on a PCB. The brains will be a Wemos D1 mini and will use NTP to synchronize the time.

# Schematic

The [circuit](Kicad/LED%20Strip%20clock.pdf) recycles the same TPIC6B595 power shift registers and changes the ATmega328 for a ESP8266 and the DS3231 for a DS3231MZ. A 74HCT244 buffer translates between the 3.3V outputs of the ESP8266 and the 5V inputs of the shift register. The original circuit has a rotary encoder to set the light intensity and the current time. The new circuit will only use the rotary encoder to set the light intensity.

Render:

![](led%20strip%20clock%20pcb-render.jpg)

Real:

![](led%20strip%20clock%20pcb-installed.jpg)

My [Kicad library](https://github.com/atoomnetmarc/ATOOMNETKICAD) is used in this project.

[![License](https://img.shields.io/badge/License-Apache%202.0-blue.svg)](https://opensource.org/licenses/Apache-2.0)