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)...
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...