Search results

  1. E

    DS18B20 code problem

    main: readtemp C.2,b1 ; read value into b1 if b1 > 50 then ; Temperature rises 50 degrees celsius high B.1 ; Turn on blue LED endif if b1 > 70 then ; Temperature rises above 70 degrees celsius high B.2 ; Turn on red LED endif goto main im using a hair drier to simulate the...
  2. E

    DS18B20 code problem

    good evening, i have tried to make an LED turn on when the temperature drops before a certain level. the code i have wrote for it is as follows: main: readtemp C.2,b1 ; read value into b1 if b1 > 50 then ; Temperature falls bellow 50 degrees Celsius high B.1 ; flash LED endif goto main...
  3. E

    lcd screen problem: black bar

    i tried to power the lcd screen from a 5v dc supply and a black bar is all im getting on the screen? any ideas as to what could be wrong? many thanks
  4. E

    ds18b20 code

    good day all, I am building a temperature sensor alarm and i am having a look at the code in the manual where it states the code for reading temperature is: main: readtemp C.1,b1 ; read value into b1 if b1 > 127 then negative ; test for negative serout B.7,N2400,(#b1,"C") ; transmit value...
  5. E

    Axe133 not working

    i have got the axe133 budget serial LCD screen, when i apply power to it the start up message is gobbledegook, i can not overwrite the program other than to clear the display, the only time any writing appears on the screen other than this is if i restore the display. I have also reprogrammed...
  6. E

    18m2 project board, removing pulldown resistors for ds18b20 temperature sensor.

    Good day all, I am attempting to built a temperature sensor alarm using a ds18b20 temperature sensor but it states on manual 2 that the pull down resistor on the input pin on the 18m2 project board has to be removed in order for the ds18b20 temperature sensor to work. I have checked the manual...
Top