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Not clear about the relay you're talking about. I've used QuickBasic for years with 2 comports, using interrrupts and it works very, very well.
Never gave VB a thought, went to Delphi as it produces ...

I/O pins can have multiple uses, so you have to disable those peripherals that are not being used.
Check with the datasheet to which are applicable for the PIC you're using and disable are required.

Since you already have the other parts of the program running you're almost done!.

Create a new program to test the fan controller only. Depending on the fan you have create a PWM program that acce ...

Sure can ! Work 'backwards',do the math to find a crystal and dividers to get what YOU need.
I've done it for years as an 'antihacker' ploy. real hard to lock onto serial data at 8003 baud !
Just r ...

I've used a lot of the US Digital products in the past for precise servos.Their shaft encoder design is far superior to that of HP. I've used the quadrature encoder/counter chips to 'offload' the PICs ...

If your PC has a real RS-232 comport, you can directly access the control lines to read the chip. There was an AP note about controlling and A2D chip this way, using QuickBasic several years ago.
I d ...

Didn't Microchip have a PIC burnt for this purpose several years ago called the MTE1122 (energy management control system) ?

I recall an app note...maybe an599,600....something like that, been awh ...

If you're saying the AC input to the optocoupler is only 2 V AC, then it will never work. The datasheet clearly staes a MINIMUM of 3.7 volts for the device to work...

If you're saying the output to ...

Now you know WHY I do NOT like simulators !!

Nothing but real hardware will prove/show that the code you cut REALLY works !!!

Since your code works fine in the 877, I'd really suspect the 'simul ...

You could monitor the current that the transducer draws. Obviously, if the transducer is plugged in, you'll get a reading of 'I'm here', providing the transducer gets its power from the same board tha ...

I don't see any bias resistors in the RS-485, or a common ground....in the schematic.

There's nothing to stop you from using the I/O pins that are muxed as ICSPCLK and ISCPDAT to be serial I/O (aka RS232) and program the chip to accept commands from a PC (using VB6) to read the EEPROM ...

As to why CCSC doesn't have this 'ICD' feature or option, it probably amounts to time, money and resources. Creating ANY product requires a LOT of R&D time which of course costs money (wages) and ...

I see that ICD=TRUE..so...

any chance that the ICD is clobbering you ?

Welcome to the 'real world', simulations are not REAL.

I can see (actually NOT see) areas of concern.
need more info...
like processor type..
version of PCM (PCH,PC???)

Port/pin assignments f ...