Recommendations - Model Train Controller

[malc-c]

In a bid to get rid of the strange noise shown on the traces in previous posts I've tried using the pulseout command.

Whilst its still not perfect as the pusle width can go down to zero, the resulting squarewave that the PIC outputs is a lot cleaner as can be seen by the attached image

I'm going to get some power transistors tomorrow and develop the output stage based on a few examples I found in an old book I used some 25 years ago and see how it performs.

Here's the code if anyone is interested.

@ __CONFIG _INTRC_OSC_NOCLKOUT & _WDT_ON & _PWRTE_ON & _MCLRE_OFF & _BODEN_ON

TRISIO.2 = 0   'Set GPIO.2 to output.
ANSEL.2 = 0    'Set GPIO.2 to digital		
GPIO.0 = 1      'gpio.0 set to input
VRCON = 0        ' Voltage reference disabled
OPTION_REG.7 =    0

DEFINE ADC_BITS 8	' Set number of bits in result
DEFINE ADC_CLOCK 3	' Set clock source (rc = 3)
DEFINE ADC_SAMPLEUS 50	' Set sampling time in microseconds

D var byte

main:
ADCIN 0, D 
PULSOUT GPIO.2 ,D                                  
goto main