| author |
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|---|---|---|
| programming_language | Shell script | |
| youtube_video_id | ShmbfrEXyME | |
| source_code_url | https://github.com/riddy8051/riddy8051.github.io/blob/master/ev3dev_clock | |
| building_instructions_url | https://github.com/riddy8051/riddy8051.github.io/blob/master/Lego_EV3_Clock.pdf | |
| excerpt | An Internet-enabled analog clock. |
This project is written in shell script on a lego EV3 brick running Debian EV3dev Linux. On boot the EV3 brick gets the current time from the internet via WiFi. When the clock script is started the EV3 brick finds the hands of the clock with a colour sensor and sets the clock hands to the current time. It keeps reading the current time and moves the clock hands accordingly. A medium motor is geared down 3:1 to drive the minute hand then a further 12:1 (36:1 total) to drive the hour hand. Enjoy!