Search found 10 matches

Thanks kender.

I have done some more testing and still have the same problem. Again I have tested with two PSU's (5V for logic and 24V for load). Everything operated fine.

I have found the f ...

Hi All,

I have a problem with LCD noise.

Processor: PIC18F458 running @ 20MHz
Compiler: CCS PCH C Compiler, Version 3.236, 29547
LCD: Powertip 4x20 (PC2004LRU) using the Hitachi HD447 ...

Thanks PCM Programmer and hillcraft.

If I were still in the design stage of the PCB, I could have added the Dallas DS2401 as hillcraft suggested, but the hardware is already built.
I will keep thi ...

Hi All,

I have a project where several devices are connected via the CAN bus to a PLC. Each device must have a unique serial number (32-bit).

Each device uses an 18F4580 running at 20MHz.

...

Hi Willie,

I coudn't view your picture from your previous post. This is most likely a problem on my side as we are busy integrating a new proxy server.
However I use the following method on all m ...

Thanks guys for all the information. I really appreciate the awsome response.

Cheers,
Johannes

Thanks all for the info, the problem seems to be my scope. I took my board to a friend of mine and we tested it on a 100MHz scope. All measured as expected. Now I will have to budget for a new scop ...

Ok, I took out my PICdem 2 Plus Demo Board and tested the same thing. The only difference is that now I use a 4MHz x-tal module. I measure with the scope between OSC2 & GND, eureka. The cycle t ...

Thanks for the info, the PIC is not shutting off anymore. I am not sure what caused the circuit to shut off before.

However I still don't get the right frequency.
I have the scope on 10x and me ...

Hi All,

I am trying to test the oscillator of a PIC16F877 with my digital oscilloscope. The pic is configured with a 20MHz x-tal and two 33pf capacitors. As soon as I connect my scope to the osci ...