Recent content by El Moriana

I have a couple of linear motors + their drivers and I'm trying to make an X-Y stage for a prototype milling machine, but I'm still a student and in a mecheng stream and haven't sized a power supply before, so not sure how to do it. So far this is my thought process: Motor specs: 340VDC (max...

1. What I am trying to do I am attempting to make a PIC18F4550 use A/D interrupts to blink an LED at RA1. [Interrupt LED] The frequency of the blinking LED is determined by a potentiometer linked to RA0. To gauge when the loop is outside of the interrupt routine, I have added an LED at RA2...

I'm starting to get it. Though, looking at it, would your example not result in: p_{Z}(z) = \int p_{X}(x)p_{Y}(x-z) dx due to the sign of the y and the one integral being cancelled? I take it you would also be able to use this to eliminate the integral w.r.t x if it turns out to be...

First of all, thanks for the reply. I understand how the shifting property works and how it equates to the function at point x=a. What I don't see are the "various mathematical manipulations", its usefulness. Under what circumstances does it make life simpler to write \int f(t)δ(t-a)dt than...

1. The problem I have a problem grasping what the point of the sifting property of the Dirac function is. It isolates the value at a point in a function, right? Doesn't just substituting that point into the function do exactly the same thing? Homework Equations Sifting poperty: if f(t)...

Ok, well thanks for looking it over.

Here we go, apologies for the messy formula earlier, I didnt realize there was a Latex button. I was expecting exactly what you typed in the derivation, hence the confusion on my part.

Homework Statement My textbook [Engineering Mathematics, Stroud, 6th Edition, page932] runs through the derivation of the integral formula for arc length. I got confused at one of the steps: [partial](ds/dx)=sqrt(1+([partial](dy/dx))^2) if [partial]dx tends to 0...

In the MS word equation editor you don't use the sub/superscript buttons used in normal text. It has a its own that you can find under the "Design" tab under "Script". Sub and superscript can also be achived by using "_" and "^" respectively as operators (in equation editor). For example...

Progress! Managed to figure it out. The discrepancy between MPLAB and PICKit 2 express was not due to a mysterious debug mode in MPLAB (as was my original theory above). It was, in fact, due to a combination of the MPLAB release-from-reset conditions and bad wiring on my part. The full...

I think I found the reason as to why the two programs were behaving differently. I have no oscillator connected and expected the PIC to run automatically from its internal oscillator. I think that the "Release from Reset" option in MPLAB forces the PIC into using internal oscillation for...

Managed to make it work! But it poses a new problem of sorts. This is what I found: Usually I code and build my files in the Microchip MPLAB IDE. Then I import the .hex to my PICKit 2 desktop app (separate from MPLAB). In the app I then write to the chip and usually click the 'On' checkbox to...

Hi, Here goes: Problem I'm having trouble getting my PIC18F45J10 to light up an LED. I have a LED-res-ground connected to RC7 (pin 26). My code is set to configure PORTC pins to be output and then set the RC7 bit. Upon debugging, the following is shown: TRISC=0x00 PORTC=0x80...

Thanks for replying. Going down the list: I have the latest PICKit 2 version. It is set up to provide power. It is not exceeding 25mA. The PICKit 2 can fully support a PIC18F45J10 (according to PICKit 2 documentation and PIC datasheet). The "VDD Short found" was a message from the PICKit 2...

Hi, I am attempting to wire a PIC18F45J10 to my PICKit 2 Programmer and I'm running into difficulties. My PICKit2 is reporting a VPP and VDD Voltage level error. Troubleshooting it further tells me that I have a VDD short. I have attached my wiring diagram along with the general wiring...