Two things. (1) There is a schematic editor available to you (mostly -- depends on cell phone, etc.) If you can use it, you should. There's little excuse providing a grainy picture like that. (2) You've opened the door to any and all techniques that might be applied. And given us nothing at all about what you already know about and can use. You should write something about how you think about these things. That will save us time and let us provide a more directly useful answer. What can you do with this, already?
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