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Thank you for this comment. My noodle was twisted trying to figure out where I went wrong. Now I can use one side to pump air to a bubbler when I am etching, and the other can go to a vacuum filter. Very happy. Thanks so much for the clarification. You are helping people years later.
Just got this hooked up. This is the first project I have ever tackled on instructables. Looks like it is working great. I am ready to celebrate with steak. Your instructions were easy to follow. The hardest part was waiting twice to receive parts from China. Thank you for taking the time to show everyone how to do this ourselves.
The 'One Chip Spinning RGB POV Display' with conversion software.