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This is a direction selector that work's with a potentiometer to change the direction state, in the middle you can put a motor that turn's on with 30 or less current, (remember that the motors only can rotate more with current than voltage) only you need to change the value of the down-right resistance with an interval of (15ohms - 1M ohm). BE CAREFUL with the potentiometer, you must buy a potentiometer that could work with 1,5 A. Or minimum that works with more than 500 mA to prevent a short circuit, the most common potentiometer resist 98 mA don't try to charge-on more current that could resist it, because I proved it!!, I hope you the best in your projects!!!
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