pic

Okay, so I've gone out & bought my Arduino clone, had fun* with it, bought a truckload of ATMEGA 48-328's & had fun* with them and would like to now broaden my horizons a little. I'd like to see what's on the other side of the fence & give PIC chips a try. From what I can see, both have their advantages/disadvantages & can excel in some areas where the other may flounder.

ok this is a circuit i have come up with to try and not use a motor driver for my picaxe,

i will have the base transistors connected to pins of a picaxe 

i will appreciate your input 

Hi,

New to this malarkey so please excuse the ingorance.

 

I built the "Start Here" robot by fritsl. Works fine no problems - great introduction. Moved on to a BEAM mini sumo from Junkbots and got someone at work to explaine why it worked...

So, I have tried to expand and experiment with the pic based bot. I have added LEDs and light sensitive direction. Works OK

My problem is with the IR detection using a PNA4602 and irin.

I replaced the sharp GP2D12 with the PNA4602. From the left with the bubble facing;

Hi all, I have question about PIC16F877A... I need to interface it with other ICs like 7segment drivers,
and I have to choose between TTL and CMOS technology. But I can't find out on the datasheet if the mcu is in ttl or cmos one.
The final question is: have I to consider the 16f877a a ttl or a cmos IC?
Many THX in advance ;-)

Hi all, this is the question: which is the fastest method to exchange informations between two 8-bit mcus?

I'm developing a tacho unit for a friend's go-kart. As long as I'm planning to use multiplexed 7-segment displays, I want to dedicate one micro to the multiplexing job and the other one will perform measurements and other operations ( the tacho is only a part of the things I want put on the kart )... maybe I'll use two PIC16f877a.

To have all finally working, I nedd them to comunicate, with the one telling the speed to the other. My ideas were:

Hi,

I've been developing my own serial servo controller for the hexapod I'm working on, using a Microchip PIC16F74.  It accepts serial input and controls up to 20 servos. The servos are connected in ports A, B and D.  Power for the PIC is from a 9v battery via a 7805 regulator.  The servos have a separate power supply from a 6v battery pack.

Found this while surfing the interwebs. Thought it was interesting and I'd share it with ya's folks

It uses some common components(well, aside from the uv leds that aren't available at your local hobby shop)and a pic.

 Now just makes me wonder how to do something like this...code wise.

http://cre.ations.net/creation/the-time-fountain

Am planning on building a robot that  would have the abilitty to navigate , avoid obstacles and collect some items.

What chip should i use?

Whats the difference between pic and picAxE?

 

thanks in advance :) 

Right so Im a trainee at the university as a technician..

 

Work's have provided me with a University made microcontroller board with a PIC18F4520 on it...

 

Im a total newb with electronics and Im finding it hard getting to grips with this board, I really want to follow the tutorial with the 85$ robot and for that it requires a PICAXE board...

 

 

I am about to get some samples from microchip and buy a pickit 2 as well

 

what micro cotrollers do you suggest that i pick up?

i do have some below that have already shipped do you suggest any others  since tomorrow we can get samples?

Link here ->   http://makezine.com/halloweencontest/

 

This is a site that I have recently found browsing ebay for a local supplier to help me along the way of learning and building.

 

http://www.dipmicro.com/store/

 

 

Please post if you know of any other Canadian affordable suppliers

I'm trying to light up an LED with the 18f252.

here is my code

#include <p18f252.inc>

LIST P = 18f252

I have spent the past day(i know it sounds stupid) figuring out how to make a 1sec delay on the PIC16F690 to make an led blink. hope you guys can help.

 

this is my code :

*************************************

'

; EQUATES SECTION

 

TMR0  EQU 1

STATUS EQU 3

PORTA EQU 5

PORTB EQU 6

PORTc EQU 7

So I am making my own CNC - PCB Miller. It is communicating with the computer using RS232 (UART), but in my testing, I find that I don't always get the correct characters, even at 1200baud. Does anyone have a method to suggest for error-checking an incoming data string over serial? I was thinking of doing something like this:

CPU sends data to MCU 4 times.

MCU checks to make sure the data is repeated exactly 4 times.

--If yes->send "OK" 4 times

--If no->send "NOT OK" 4 times

If CPU receives OK, queue up the next data to send

I found this 40-pin chip in a CPU battery. It is labeled PIC16C74B-04/P. I have the datasheet, but that's not my best language. i just want to know if its possible to use this as the ones used in LMR - if is possible to make a robot with this chip and what would i need to program it. I read something about ICSP(in-circuit serial programming), which I believe is the process used with this chip, but that's as far as I go. Thanks.

howd yu do?

I finaly caught on to the PIC assebly language!

I am using a pic on a simple little robot with the usual bump, revese, turn, obsticle avoidance. it will do more than that later but I havent even writen a PIC program yet so I am starting small. anyway there is on thing I don't understand in the tutorial i read. it is the XORFcommand. I understand xor gates but how does it work here; http://www.pictutorial.net/?page_id=152

it says 

Dear Robot enthusiasts,

Hello all!  This is my first question on here so please feel free to critique my writing style.