My Thermochromic Clock did not satisfy my quality standards, thus I had the PCBs without any use. After some thoughts I decided to build a 10 digit 7-segment screen.
Project summary
In this project I designed a PCB to fit with the Thermochromic clock control panel. The result is a large 7-segment screen.
My responsibilities
PCB design
Design the 3d printed frame
Software modifications
Assembly
Results
Since I already had the control panel I had to design the 7-segment digits. I decided to make it simple and use the available PCB assembly service. Due to cost optimizations I had to make 2 digits on one PCB.
After receiving the assembled PCBs I modified the software and the screen was working. Thanks to the Thermochromic project there was not too much to discover and I could reuse most of the code. Just some modifications were required.
I find the end result looks pleasing and I am satisfied. A 7-segment digit has its limitations and having only 10 digits reduces the possible messages that could be displayed. Nevertheless, it is a nice clock and could be used for some other simple messages.
![](https://static.wixstatic.com/media/e75728_2a7f4627e40f446d8e21d4e0a3f62972~mv2.jpg/v1/fill/w_147,h_98,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/e75728_2a7f4627e40f446d8e21d4e0a3f62972~mv2.jpg)
![](https://static.wixstatic.com/media/e75728_f4e5ec00b8c141b9aa2a0c1f4307ed19~mv2.jpg/v1/fill/w_147,h_98,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/e75728_f4e5ec00b8c141b9aa2a0c1f4307ed19~mv2.jpg)
![](https://static.wixstatic.com/media/e75728_065f889b417145ef8aec5033e558bb74~mv2.jpg/v1/fill/w_147,h_98,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_auto/e75728_065f889b417145ef8aec5033e558bb74~mv2.jpg)