Gregory's Server@tubetime I've used a resistor voltage divisor to bias the pin to 1.4V (haflway between TTL receiver thresholds), and two comparators at the thresholds.
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Top-level
 @tubetime I've used a resistor voltage divisor to bias the pin to 1.4V (haflway between TTL receiver thresholds), and two comparators at the thresholds. 1 comment
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@brouhaha yep that's one approach I've been thinking about