DIY Laser Spy Microphone By rickosgood in CircuitsLasers18,6621227Save PDFFavoriteIntroduction: DIY Laser Spy MicrophoneBy rickosgoodRichardOsgood.comFollowMore by the author: In this video I'll show you how you can make a laser spy microphone for under $20 in parts! Participated in the Weekend Projects ContestView Contest