HI, I am building an instrument that logs the count of pulses coming from four independent sensors. I chose the Mega since it has 6 interrupts. I am using an Adafruit logger/RTC that uses the ICSP connector and a 4 line x 20 LCD (HD44780) using SDA/SCL (pins 20 and 21). Does the logger use 2 of the …

How can I free up more interrupts on a Mega

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