Let's Make Robots!

Question: Turn on a pin on a parallel port

I need a program to control a pin on the parallel port.

It need to work on windows xp and it needs to turn only one pin on.

The idea is to turn port D1 on with program: Pport1 for example

and D8 with an other program

so that with my project with voice control I just need to start the program with the voice control softwareto turn the port on.

 

 

 

Thanks 

 

 

Danny Temmerman

helicopter project

hello there.i am new to this forum and i am about to built a controller that could control the tail of the helicopter model.

something like a heading lock gyro.have anyone any idea for how can i do that or any similar project?thanks for your time time and looking forward hearing from you

interface with atmega8 with parallel port

Does anybody of LMR knows how to for example turn port D0 on the atmega8 with the pc linked to the atmega8?

For example when I start this program the atmega8 turns on port D0 and when I turn an other program on port D1 turns on.

Which program do I need and what circuit do I need?

Can somebody give me an example program?

Please

 

 

Thanks

 

 

Danny Temmerman

Where have Picaxe & Techsupplies gone ?

Where have Picaxe.co.uk & Techsupplies.co.uk gone ?

Both websites seem to be down ? Have they both gone bust ?

PICkit2 programming and ICSP?

I need to implement this into my robot but I am not sure which circuit is the correct circuit to use.  I want to program the chip without removing it from

the circuit.I would obviously prefer the first one but if the second one is better then i would go for it. Please give some advice. 

 

Voice controlled room

I have an idea about a voice controlled room.

I would use an atmega8-16PU to switch lamp and other items on

I have an old pc laying in my room with windows 2000.

It has a serial port, a parallel port and 2 usb ports.

I want it to interface with my atmega8, but I am wondering how you use voice control with it.

I could also use an arduino, but for now I am thinking it al out.

This is an idea for home automation.

 

So does anybody now how I would program my pc for voice control.

Hole size on a mini servo horn? (+ where to find hex spacers)

Hi, i've got some miniature servos like this ones :

IMG_0101_0.jpg

and i'd like to know the size of the holes on the horn, but not the center hole, the other ones which are pretty small... Does anyone know what kind of screws i need? M1 maybe?

Actually, instead of screws, nuts and bolts would be perfect for me, do you know if (and where) i can find those at that size?

And i'm also looking for that :

IR LED's. blowing out

The 2 diagrams are cicuits for driving led at 38khz. I implemented both circuits. Firstly i take the second cicuit from the link and just add on the transistor part as seen in the first circuit. I did not add the 4.7kohm resistor nor did i add the 47ohm. Is that the reason why six of my leds are blowing out?

 Infrared555Schematic.gif

OR

the circuit over here http://marwww.in2p3.fr/~levansuu/projets_es2i/Parallax/stamps%20in%20class%20website/downloads/rob4.pdf 

How do people get analog values? (Question)

I just had a question burning in my head. How do people get analog values from thier accelerometers, potentiometers, Sharp infared proximity sensors? How do you guys find those values that you can plug in the PICAXE?

schematics software?

what schematics software do you use?

Best regards from Spain. 

PIC16F690 'delay'

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

Battery voltage going down every second

Hello,

What could be the reason that makes the voltage of a 9V battery drop every second? Im trying to build a line-follower robot, and I'm doing the circuit in a general purpose PCB (the one with holes). I'm using a MCU (PIC16F877A) and in the beginning I had only the DC motors connected and it was all good, but after I connected the CNY70 the problems started. The circuit I'm using is:

foo_0.png

Arduino Shield Layout

I am planning to use a simple Arduino Shield for my next project.  I would like to use DipTrace to do this.  Before I start trying to measure distances between pins on the Duemilanove board, I thought I'd see if anyone here has a DipTrace file that could be used as a starting point for a shield.  If so, I'd appreciate a copy.

IF / OR Interrupt? Picaxe...

Hey guys,

I am playing with a 40x2 and the hintsetup and hserinsetup commands also with the flags commands... I would like to interrupt on either a hint signal OR a hserin input NOT both at the same time. It seems that with the various flags conditions, you can stack-up a bunch of stuff that has to be true to interrupt, but there is no "OR" --just a bunch of ANDS

 

Basically, "if hint1=1 and hint2=1 then inturrupt" but not "if hint1=1 OR hint2=1 then interrupt"...

RS232 Communication with MCU

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

lcd-routines in avr-assembler

hi everybody

i know that not many of you are programming theit avr mcus in assembler, but i 've got something for those who do:

when i started using lcd displays, i just copy-pated or includet the file "lcr-routines.asm" and used those routines that i found on mikrokontroller.net

I found those routines very helpfoul to start working on lcd-displays.

the other attachment called "lcd_routines_advanced.asm" is something i wrote, based on the existing lcd-routines, but using the srram of the avr as a buffer.

BEC'S as voltage regulators?

When building a robot a regulated power supply is very important to give the controller a good stable 5 volts. Normally a 7805 or better is used. Which is a lineair supply and is very 'proven technologly'. Except it is not very efficient. When used with a battery pack all the volts above 5 are burnt away.

Solution for this is using a switch mode power supply, (buck and or boost regulators). These have a much better efficiency but are less common and therefore much more expensive. Also the ones I found can delivery less than one amp.

PIC16C74B-04/P

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.

Cardboard Robot Game - starring LMR Look-alikes (rik-puff-calculon-mikv Pyro style !!)

Just for fun i found this game with an uncanny likeness to LMR bods.

including  rik (with Admin-glasses)- puff (the Dragon) - Calculon320 (the robot)- mikv (pyrotechniques).

There are too many synchronous LMR events in this game ....... (did an ex spammer make it !!!!)

THE IR bObOt

hey!

My IR bObOT 

I am a young Algerian of 20 years…. So excuse my language

I build a robot how avoid obstacles with his IR RemoteControl , it was very difficult because I am there where there are anything to create a robot!!, so I use a lot of recovery material 

I am a member of ROBOT PASSION where I exposed my entire project in French