rename print_microseconds_per_scan() to printMicrosecondsPerScan, rename print_scans_per_second() to printScansPerSecond
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@ -107,6 +107,6 @@ void loop()
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row_R1.process();
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scanDelay.delay();
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//debug.print_scans_per_second();
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//debug.print_microseconds_per_scan();
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//debug.printScansPerSecond();
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//debug.printMicrosecondsPerScan();
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}
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@ -121,6 +121,6 @@ void loop()
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row_R1.process();
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scanDelay.delay();
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//debug.print_scans_per_second();
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//debug.print_microseconds_per_scan();
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//debug.printScansPerSecond();
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//debug.printMicrosecondsPerScan();
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}
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@ -12,10 +12,10 @@ Follow these step to tune DELAY_MICROSECONDS for maximum scan rate for a given S
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Intantiate DELAY_MICROSECONDS in your sketch:
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ScanDelay scanDelay(1000);
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Add this to the sketch's loop() function:
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debug.print_microseconds_per_scan();
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debug.printMicrosecondsPerScan();
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Compile and load the sketch into the microcontroller; microseconds_per_scan is printed every second.
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Adjust the value of DELAY_MICROSECONDS and repeat until:
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debug.print_microseconds_per_scan() <= DEBOUNCE_TIME / SAMPLE_COUNT_MACRO
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debug.printMicrosecondsPerScan() <= DEBOUNCE_TIME / SAMPLE_COUNT_MACRO
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DEBOUNCE_TIME can be obtained from the switch's datasheet. Some switch bounce times are:
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Cherry MX specifies 5msec bounce time http://www.cherrycorp.com/english/switches/key/mx.htm
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@ -114,6 +114,6 @@ void loop()
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row_R1.process();
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scanDelay.delay();
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//debug.print_scans_per_second();
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//debug.print_microseconds_per_scan();
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//debug.printScansPerSecond();
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//debug.printMicrosecondsPerScan();
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}
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@ -150,6 +150,6 @@ void loop()
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row_R1.process();
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scanDelay.delay();
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//debug.print_scans_per_second();
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//debug.print_microseconds_per_scan();
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//debug.printScansPerSecond();
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//debug.printMicrosecondsPerScan();
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}
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@ -70,7 +70,7 @@ For Forward Current, use the smaller of:
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current capacity of output pin If = 20 mA
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continuous Forward Current of LED If = 30 mA
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minimum current limiting restiance is R = (Vs - Vf) / If = 55 Ohms
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minimum current limiting resistance is R = (Vs - Vf) / If = 55 Ohms
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```
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Add a safety margin for resistor tolerances (1%, 2%, 5%, 10%), and round up to a standard value.
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http://www.rfcafe.com/references/electrical/resistor-values.htm
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