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  1. R

    interrupts on 18m2

    Hi all. 2 questions. I am trying to set an interupt on b.6 ( leg 12) on an 18m2 but can't for the life of me figure out the pin number.I thought it was pin6 but what of c.6 ( leg 15)? Is it true that you can't use interrupts when you multitask? Thanks, Robert
  2. R

    pulsin and multitasking

    I have a program that checks distance using an ultrasonic detector by using the pulsin command. Works fine. I want to add a parrallel task, but when i do the pulsin data being read become zero. Is this an inherent problem with multitasking on an 18m2?
  3. R

    adc voltage limit

    I am using an 18x running off 5 volts. The adc pin 1 is reading amplified voltages from a thermocouple. If the thermocouple leads get disconnected the full voltage (9 V) will be feed to pin 1. I assume that this will kill the chip. I have placed a n114 diode between pin 1 and vcc (cathode of...
  4. R

    DS18B20 digital temperature sensor

    I want to use pin4 (leg3) to read data from DS18B20 digital temperature sensor. I also want to use this pin to light a LED if there is an error. Would the pin going high to light the LED damage the sensor? Would the extra loading on pin4 caised by the LED and is current limiting resistor effect...
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