Hollow Clock Remix uses Internet Time with ESP8266

prusaprinters

<p>I was excited by the design and solutions of shiuras <a href="https://www.thingiverse.com/thing:4761858">hollow clocks</a>. But all of them are running with only quartz accuracy and needs permanent correctures.</p><p>So I used an ESP8266 NodeMCU to obtain the time from internet and added a correcture for rounding errors from time-values to steps to the software. Additionally the change from CET to CEST and back is considered automatically. So the clock nevermore has to be to corrected.</p><p>Because the ESP8266 is a bit longer than the Arduino Nano I had to create the base completely new from scratch to fit the new PCB. Additionally I splitted the base to be able to print it without support. Two additional holes makes it easier to mount the motor with its screws and a cover hides this ugly stepper.</p><p>The firmware for the ESP8266 is available on <a href="https://github.com/xSnowHeadx/HollowClock">github</a> (it's still under construction there)</p><p>Edit 2021/03/28: Btw: CEST correction worked fine. When I woke up this morning the clock was showing the correct CEST-time. ;-)</p><h3>Print Settings</h3><p><strong>Printer:</strong></p><p>FIashForge Dreamer</p><p><strong>Rafts:&nbsp;</strong></p><p>No</p><p><strong>Supports:</strong></p><p>No</p><p><strong>Resolution:&nbsp;</strong></p><p>0.20 mm</p><p><strong>Infill:</strong></p><p>25%</p><p><strong>Filament:</strong></p><p>PLA white and copper</p><p><br>&nbsp;</p><p><strong>Notes:</strong></p><p>&nbsp;</p><p>If your printer has poor bridging capabilities you'll need a bit support for the USB-breakthrough.</p><p>&nbsp;</p><p>Category: Electronics</p>