Let's Make Robots!

Heated Bed Warning Light

Hello everyone, I thought I'd share a circuit I am using on a little 3D printer upgrade project.

I have a heated bed PCB for my Printrbot that I am currently adding to the underside my aluminum bed. I needed clips to hold the pcb in place and provide a housing for wire strain relief. I designed some and printed them out. I wanted to add LED warning lights to the clips so they would glow when the bed was hot. I really wanted the lights to stay lit after the bed was off and slowly dim to nothing over about an hours time like the warning light on my stove does.

Nightlight, Rotates Head, Blinks with Eyes, Children Fun
"What kind of party do you want to have my son ?" asked a mother her son. "A robot party!" answered the soon 7 year old boy.  A robot party without a real robot is … Read more

Kirchoffs Voltage Law and Current Law - is there easier math for this?

I think I understand the simple examples for this law, thought the math (algebra) is a bit daunting as its been many many years since high school, and I wasn't very good at it then. The more complex examples make me dizzy.  I have to believe there is an easier way to understand and use this law in my robots circuits. Or is this something that I will rarely use? Is there an easy "rule of thumb"?

Here is an example from the class, not even terribly complex, but seems that way for me.

Navigates using ultrasound. Twitches a bit now and then.Whistles bits of songs when he`s happy.
  This one took a while but I'm happy. I started by assembling a kit I bought for the Pickaxe stack. It was rather satisfying to put it all together. Read more
Make shapes with a laser...
Morning project - laser beams ! I had the following on my desk: Raspberry Pi 22x cheap micro servos from ebay3d printed pan tilt bracket:  … Read more
General platform for doing stuff
Using a
My latest 'bot. the time it took me is really measured in days, just finding a decently priced plexiglas provider was very hard. but assembling, testing, coding … Read more

PWM and registers

Hello,

some time ago i had opened a forum post about PWM on arduino. RobotFreak gave me a piece of code that made my remote work:

#define pwmPin 11

void setup()  {
 
  // toggle on compare, clk/1
  TCCR2A = _BV(WGM21) | _BV(COM2A0);
  TCCR2B = _BV(CS20);
  // 36kHz carrier/timer
  OCR2A = (F_CPU/(IR_CLOCK_RATE*2L)-1);
  pinMode(pwmPin, OUTPUT);
  
}

produce chaotic drawings with his pen
hi all I am mr. Chaos  I can draw chaotic drawings with my ink pen i suck energy from a 1.4 v zinc air cell nice to meet you Read more

Coming up next: Hammer and Head

So, my next robot project has two robots: Hammer and Head. Hammer will have a hammer of some kind and Head will have a big head. Hammer and Head are going to have some fun together. Well at least Hammer will have fun...

Here's a list of updates to help with page navigation (if it ever works):

And now on to business:

    In my thesis I am creating a development board for use in the University Labs. This same idea is put here, to develop a mini-version, for purposes of … Read more
Marine Aquarium Controlled by MRS1
I like robots but I also like fish. I used to keep a large sea aquarium and due to moving arround and work I had to get rid of it. Bummer. But now I convinced my … Read more
This is yet another line-follower. I could not not have a line-follower. The controller card is a "cubloc CB230" home "Lextronic.fr. He owns a radio remote control … Read more

Picaxe code

Hi all,

I've been busy over the past few days studying the Picaxe manuals and trying to understand the coding. I keep reading about how easy it is and it's even called basic, but my problem is, I don't understand any of it.

My electrical and mechanical skills are enough to get me by, but this programming makes no sense to me what so ever.

I've Googled in an attemp to find online tutorials, that doesn't seem to help either.

Can anyone explain how they learned the Picaxe basic coding? That might help me.

Thanks,

The Bromz.

Robotic curtain!

Found this video of a rather fantastic project on youtube, just felt like sharing!

What a silly little curtain :P.

 

Also, check out his website, pretty neat stuff!

http://www.niklasroy.com