Scrolling thermo

[mister_e]

This is schematic who work fine in Proteus. In "real life" , despite modification of scroll timming (pause 500 to 5000 !), the led's are always ON !!! Any idea ?
Thanks !

Are they FULL ON or dimmed? I feel they will be dimmed, it's a kind of ghost probably you'll need to add some delay after you turn them off, after the PORTB=0 line

Turn some LED ON, wait a little bit, turn them OFF, wait a little, do it again.

[fratello]

I will try this code today, later...

....
LOOPing:
FOR scroll = 0 TO 35
    FOR scan = 0 TO 15
        PORTb = 1
        porta=1
        FOR counter = 0 TO 7
            PORTA = leddata [counter]
            PAUSE 10
            PORTb = PORTb * 2
        NEXT
    NEXT
    FOR counter = 0 TO 34
        leddata [counter] = leddata [counter+1]
    NEXT
NEXT
GOTO START
END

I find another ...mistake (?) : line 2 do not appear on matrix ! What a hell it's going ?!

[fratello]

Tens of variants and no result ! Nobody has a clue ?

[Sphere]

You might have to play with your FOSC setting to enable I/O mode on RA6&RA7.

Sphere.

[fratello]

With schematic from post #8 :

; working variant ; anode to portB, catode to portA
@ DEVICE pic16F628A, intOSC_osc_noclkout, WDT_OFF, PWRT_OFF, BOD_OFF, MCLR_off
define osc 4
INTCON    = 0
TRISA   = %00000000       
TRISB   = %10000000
CMCON   = 7                         ' Disable comparators

DQ     var  PortB.7

'***************************************************************************************
 eeprom 0, [%10100001,%01111010,%01110110,%01101110,%10100001]      '0
 eeprom 5, [%11111111,%01111101,%00000000,%01111111,%11111111]      '1
 eeprom 10,[%01111101,%00111110,%01101110,%01110110,%01111001]      '2
 eeprom 15,[%10111101,%01111110,%01110110,%01110110,%10101001]      '3
 eeprom 20,[%11100111,%11101011,%11101101,%00000000,%11101111]      '4
 eeprom 25,[%10111000,%01111010,%01111010,%01111010,%10100110]      '5
 eeprom 30,[%10100001,%01110110,%01110110,%01110110,%10101101]      '6
 eeprom 35,[%11111110,%00001110,%11110110,%11111010,%11111100]      '7
 eeprom 40,[%10001001,%01110110,%01110110,%01110110,%10001001]      '8
 eeprom 45,[%11111001,%01110110,%01110110,%01110110,%10001001]      '9

    counter           var      byte
    scan              var      byte
    scroll           var      byte
    leddata           var      byte[36]    'Column Data for display 36 columns
temperature    var    Word      'reading from sensor
  Sign         var    BIT
    tempA             var      byte        'Stores First digit (High)
    tempB             var      byte        'stores Second digit (Mid)
    tempC             var      byte        'stores Third digit (low)
    n            var    byte

DS18B20_12bit     CON %01111111

START:
 CLEAR        'Clear all varibles

' Init Sensor 1
 OWOUT DQ, 1, [$CC, $4E, 0, 0, DS18B20_12bit]
 OWOut DQ, 1, [$CC, $48]                   ' Start temperature conversion
 OWOut DQ, 1, [$CC, $B8] 
 OWOut DQ, 1, [$CC, $BE] 
 Pause 50
 OWIn DQ, 2, [temperature.byte0, temperature.byte1]
 Pause 50 
 

for n=0 to 7
leddata [n] = %11111111
next n

    leddata [13] = %11111111
    leddata [19] = %11111111
    leddata [20] = %00111111    ' DECIMAL POINT
    leddata [21] = %00111111
    leddata [22] = %11111111
    leddata [28] = %11111111


    leddata [29] = %11111100    ' degrees c
    leddata [30] = %11111100
    leddata [31] = %11100011
    leddata [32] = %10111101    
    leddata [33] = %10111101
    leddata [34] = %10111101
    leddata [35] = %11111111
      
 OWOut DQ, 1, [$CC, $44] 
 OWOut DQ, 1, [$CC, $BE]
 OWIn DQ, 2, [temperature.byte0, temperature.byte1]         
     Sign = temperature.15
     temperature= ABS(temperature)
     temperature=((temperature >> 4)*100) + ((temperature & $F) * 100 >> 4)
     if sign then temperature= -temperature
        
    tempA = temperature DIG 3
    tempB = temperature DIG 2
    tempC = temperature DIG 1

    IF tempA = 0 THEN
    for counter = 0 to 4
    leddata [counter+8] = %11111111
    next                                            ' if 1st digit is 0 then skip so display dosnt display 09.5c
        GOTO skipdigit                                ' it will display 9.5c instead
     ENDIF
    FOR counter = 0 TO 4
        READ tempA*5+counter,leddata [counter+8]     'stores 1st digit in leddata locations 8,9,10,11,12    
    NEXT counter

skipdigit:
    FOR counter = 0 TO 4
        READ tempB*5+counter,leddata [counter+14]    'stores 2nd digit in leddata locations 14,15,16,17,18
    NEXT
    FOR counter = 0 TO 4
        READ tempC*5+counter,leddata [counter+23]    'stores 3rd digit in leddata locations 23,24,25,26,27
    NEXT    

LOOPing:
FOR scroll = 0 TO 35
    FOR scan = 0 TO 35
        PORTb = 1
        FOR counter = 0 TO 7
            PORTa = leddata [counter]
            PAUSE 1
            PORTb = PORTb * 2
        NEXT
    NEXT
    FOR counter = 0 TO 34
        leddata [counter] = leddata [counter+1]
    NEXT
NEXT
GOTO START
END

Maybe I put here tomorrow link to video (Y...tube).

[fratello]

How I promise...
Note : The pullup resistor on RA4 it's 4k7.

[mackrackit]

Very nice!!!

fratello,
This will make a great project for the wiki.