SimpleTronic | USB Traffic Light + PCBoard @simpletronic1299 | Uploaded July 2017 | Updated October 2024, 2 minutes ago.
USB powered Traffic Light model. PCBoard, component placement & templates in PDF download.
PCBoard PDF link:
drive.google.com/file/d/0Bxsma3fGYPyRMnBnV2dwQmtnUnc/view?usp=sharing

music album:
distrokid.com/hyperfollow/rekena/short-stories