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Member Since: July 18, 2013

Country: United States

  • This is definitely a useful product, but your choice of op amp is a bad one. The LM358 can only drive the "HIGH" level to about 3.5 or 3.6 Volts, which I believe is barely hovering around the threshold for the Arduino HIGH level. You might instead replace the LM358 with a rail-to-rail op amp like the MC33202, which is also available in the SOIC package. This could avoid some potential snafus when the logic is not working as it should...

No public wish lists :(