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In this video I will be having a closer look at commercial mechanical 7-segment displays and find out how they work. Afterwards I will be creating a YouTube subscriber counter with them and an ESP8266 by not only finding out how the control PCB for the display works, but also by learning about the RS-485 and UART interface. Let's get started!
Thanks to Alfazeta ([ Ссылка ]) for sponsoring this video!
Music:
2011 Lookalike by Bartlebeats
![](https://i.ytimg.com/vi/yFQS_TQ4948/maxresdefault.jpg)