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...several day later - problem solved! Circuit was incorrect! Power connected wrong Vcc on DS1302.

Hi All,

I cannot make a ds1302 RTC work with a pic16F777.

I have used the RTC before with a smaller pic and that worked fine. For this project I need the 3 x HWPWM capabilities of the 16F777. I...

Working perfectly!

Changes made,
MCLR OFF
47ohms resistors to MOSFET's
both Vdd and Vss's connected

Have not added the cap's due to space constraints - but will do that if it plays up again....

BOTH Vdd and Vss? Wow, that's new - I'm surprised my other projects worked at all..

Will start with that and the MCLR and see how it goes.

Thank you all.

here is the circuit;

5706

I have tried three power supplies - Using one for circuit and one for LEDS, and also using the same supply split with a voltage regulator for the PIC circuit. The LED supply is a hefty (and expense!)...

Interrupts? WDT?

I've the PIC fading through the spectrum with RGB LED strips connected to the three PWM pins. Yet something keeps resetting the program. The timing of the resets is not...

Ahhh... Sorry guys - I was looking at Page 155 (as per page number at bottom) and beyond - not Page 155 of the PDF! So I started (struggling) to read through missing the two pages before!
...

Thanks!

Phew - that wasn't fun...

It is possible to set them individually?

Thank you both very much - you have just completed the spectrum for me!

Hi Steve,

Thank you for the prompt reply.

I've been looking through the datasheet in the A/D section, but it's quite over my head! I have done some searches and see that setting the ADCON1 to...

Would really appreciate some help on getting the 3rd PWM to work on my PIC16F777.

I'm using the three PWM's to control R G B led strips. My PortB.5 will not light!

The code I'm using -...

Indeed!

Many many thanks guys!

Thanks Darrel,

I have been through this - but it's still not clear to me;

The files in my assembler's folder are *.epc, so not exactly what is discussed in the post you have forwarded. For...

Hi All,

I hope someone can end these hours of frustration. I try very hard to find relevant threads before adding my problems to the list, but I am at a loss;

I'm trying to use a PIC16F777,...

Thank you Steve - got it working... but i do not understand all the bits in that register;

IOFS: INTOSC Frequency Stable bit ?
SCS<1:0>: Oscillator Mode Select bits ?

I'm stuck on a very similar (i think!) problem;

Using a PIC16F777 for the first time, which has an internal Osc. I'd like to get it running at 4MHz, but using fratello's DEFINE code modified to:
...

Hi Ron,

Solved the problem - the value being written was a variable of type "word", where it needs to be a byte.

Thanks for your assistance.
-orjon.

Hi Ron,

Thanks - that line you point out is indeed unnecessary.

However, the 2nd command word, which I have at "%10101111" is the correct command to write to both pots according to the...

I'm having problems with the DS1803 010 (10Kohm) digital pot.

This is simply a test circuit - ultimately I'd like to use the device to alter the brightness of a LED. Problem is, the simple...