With Instructables you can share what you make with the world, and tap into an ever-growing community of creative experts.
Tell us about yourself!
If you use 1.5Mohm as r1 it is restricting the current to flow. 1.5Mohm is 1,500,000 ohm vs 100kohm is 100,000 ohm. the best is to stick to something around the 100kohm.
Let your inbox help you discover our best projects, classes, and contests. Instructables will help you learn how to make anything!
© 2016 Autodesk, Inc.