Let's Make Robots!

atmega

Push other robots ouf of the ring
Using a
This is Perfected Titan, my minisumo for this years Robot-SM. It's main controller is an Atmega328 running at 16MHz. The two motors are controlled via an L298N … Read more

Atmel RF ATmegas

Hi.

Has anyone attempted using these? I was wondering how hard it would be to use them with the arduino bootloader for my as-yet-not-started RC system project (I will get round to it soon, hopefully). The Zigduino seems to use them, and they've supplied a library to operate the in-built radio. I'm just wondering whether I'd have to be careful with PCB layout etc. to avoid interference.

Navigate around, controlled by wireless tilt/accelerometer enabled controller
Using a
I've been building things like this for a while, and actually, LMR was one of the first places that introduced me to hobby robotics. I had already been building … Read more

Atmega - Programming Flash .. FAILED!

Hi, when I want put program in to Atmega644 it shows: Erasing device .. FAILED! , but when i click on "Read Signature" everything is OK. I am using programmer compatible with STK500 and AVR studio. Help please.

atmega32 INT2

Hi...

 

I have an atmega 32... I want to use all of the 3 interrupts... I got problems with INT2...

 

I set it up as a falling edge and via a 10K resistor put the button to ground...

 

while(bit_is_set(PINB, PB2));

_delay_ms(5000);

//init interupt

GICR |= (1<<INT0) | (1<<INT1) | (<<INT2);

sei();

 

 

 

the problem is that after the while... when the interrupts are initialized... the pull-up drops out...

Eliminates the opponent inside the Nano-Sumo ring
Using a
  This is our Nano-Sumo robot. I say "our" because it is a team effort between Patrick McCabe and myself. Here is the link to Patrick's Electronics post. We talked … Read more
UPDATE - 8. sept. 2010 - first h-bridge and controller board done.--- This is part of my biggest robot project ... It has enough degrees of freedom (5+gripper), … Read more
Hi guys, this is my current project, i thought the programming would be easy, but since i havent used my arduino for months, it's not going so well, lol. Well … Read more

Peculiar ldr problem...

Hi, well got my robot to follow light, to see if everything was working fine, but the weird thing is, instead of changing direction in real time, it only changes direction when i reset my arduino board, same thing happens if i watch the serial monitor.

 

for example

 

it prints out 500 to the serial monitor

keeps printing 500, even if i change the light source.

Programming an atmega with the Arduino IDE

Hi guys.

from this post (http://letsmakerobots.com/node/5593 ) by Rudolph i learned that you can program an atmega with the arudino IDE even if you haven't got an arduino board.

What i have here with me now is an atmega328, a serial programmer (precisely this one: http://www.sparkfun.com/commerce/product_info.php?products_id=14 ).

Atmega + camera.

I have thought about atmega + camera idea too, but for use on atmega not sending. I looked at CMUcam but it wasn't so low-cost as it was advertised (100$ it too much). I found http://www.robotshop.us/sfe-cmos-camera-640-480.html . It seems cheap, microcontroller friendly and so on. Only problems are - SMD connections, killer programming and impossible debuging.

 

So, all thoughts and good links are welcome.

Line follower on changing contrast

I am making a line follower using an ATmega8

Now the problem is the testing of line follower, there is a black line over a white surface and then after a while, there is a white line over a black surface....

The robot will make a start on any of the corners...so it is  impossible to tell whether it is a white line or black line...and also in middle, the contrast will change...

I have to make the program in such a way that it will detect the change in contrast and continue its work

I thot this can be done in programming part..so posted here...

Line Follower using Atmega8

Hi all, I am new here and about to make a debut in robotics with a simple line follower robot.

I have chose AVR ATmega8 as my microcontroller because I found out that we can chose which pins we want as input and which ones as output. So this seems pretty cool for a microcontroller. Also i figured out that it is cheaply available here.

ubuntu & atmega

So my pickit2 kept failing, even with only pic in circiut. FinallyI got fed up of pics and windows. I deleted windows, moved to ubuntu, took out mu usbasp and atmega88. Tried to get pickit analyser (like computer oscilloscope) working on linux but it seems impossible, so I have to use windows computer for that. I also found out that linux + pic programming = big no no.

 

DIY CNC router project

04/06 Update

Motors and driver chips arrived in a package with some stuff for other projects today. Can`t find much information about the motors online and they have some marks on the body but they should work great. I`ll breadboard a circuit up to test the motors later.

 P1000780-500.jpg

Line follower "GOOFY"

This is my very first line following robot that is built around ATMEGA8. Construction and circuit are quite simple. Such a name- GOOFY is given because robot movements are somewhat clumsy. But hey! Its still working and doing his job very well! :)

1.jpg

There is two geared DC motors that are controlled using PWM. Tyres are the ones that are used in RC cars. Besides-these have a nifty looking.