Optocoupler Tester Easy

Optocoupler Tester EasyI have long wanted to do :)The previous link is no longer available for some reason, so this post is a replacement. Parts links below: Round Magnet 3x3 mm Battery CR1220 LEDs 0805 Button 5x5 IP Sockets Toggle Switch SS-12D07G3 Screws Flat Head M2.5 - M6 Insert Nut M2-M3 Crystal Fishing Wire Links to used tools: Mini Wireless Grinder Polishers Buffers Abrasive Micro HSS Steel Twist Drill Bit LAOA Mini Hand Tools NOGA deburring tool and Blades UV Glue My favorites: Thank you for every tip or donation,it means great recognition for me and helps a lot to keep going! My some other things: 3D Printer • Accessories Electronics Tools • Accessories Hand Tools Power Tools • Accessories Photo Video Accessories Gadgets • Accessories Knobs • Other