Rob Reynolds

• 0 amp breaker

• delay() requires interrupts to work, it will not work if called inside an ISR.
• Normally you should use digitalPinToInterrupt(pin), rather than place an interrupt number directly into your sketch. The specific pins with interrupts, and their mapping to interrupt number varies on each type of board. Direct use of interrupt numbers may seem simple, but it can cause compatibility trouble when your sketch is run on a different board.

• Perfecting the First Layer
• In general, you want the speed of your first layer to be reduced, typically 30-50% speed, to allow extra time for the filament to gain contact with the bed and stick.
• Adjustments to the First Layer Height allow you to vary the amount of pressure the filament exerts against the bed
• In other cases, using a percentage above 100% is helpful.  For example, if you are printing at very fine layer heights, such as 0.05mm, a tiny variance in your bed leveling can result in poor first layer adhesion.  Using a First Layer Height well above 100% can be extremely helpful in these cases. Many machines benefit from 200 or 300%
• First Layer Width. By increasing the First Layer Width, many users find that their first layer prints out much smoother and sticks to the bed much easier.
• 100 to 200%.

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