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Laser Activated Relay
This DIY project uses laser beams and LM393 light sensors to activate four relays sequentially using an Arduino Mega. It was built as an experiment and a stepping stone toward a laser target system. Components Used LM393 LDR Light Sensor Module https://s.click.aliexpress.com/e/_c3GuNWvn Laser Module https://s.click.aliexpress.com/e/_c3k7E58h ...
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