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Misc / [advertisement] ServoCity Cyber Monday Flyer HOT DEALS
« Last post by ServoCity on November 21, 2014, 02:44:19 PM »
Don't miss out on these HOT deals - Monday, December 1 only

CYBER MONDAY DEALS FLYER:https://www.servocity.com/ServoCity_Cyber_Monday_Flyer_2014.pdf

1) GOLDEN TICKET GIVEAWAY!
TWO random orders on Cyber Monday will receive a Golden Ticket that is redeemable for $500 worth of Actobotics parts! 
Every order placed between 12AM CST on 12/1/2014 and 12AM CST on 12/2/2014 is eligible. 

2) FREE SHIPPING on orders over $50
Use discount code: freeship

3) Items up to 85% OFF
We're seriously slashing prices for this one day event!  Do not miss the chance to save 20 - 85% on select items. 

4) ALL HITEC SERVOS ARE 20% OFF
Every single Hitec servo is on sale.  Stock up and save big!!

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Software / Re: 50 dollar robot code building error
« Last post by Zevoo on November 21, 2014, 12:53:12 PM »
I encountered an error when trying to build the Photovore_V1 and SoR_Utils. How do I fix it? :O
I have attached a picture.
Also after you build the code where do you go in device programming to write it onto the chip and which file do you use? (Im confused by the new studio Layout)
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Software / Re: Super fast obstacle maze solving. How?
« Last post by SeekingVision on November 21, 2014, 11:43:11 AM »
I was curious, looked the video, then looked at the rules. The robot mice are allowed an initial mapping run. It is just a matter of running the known course after that. Looks like fun, I think even simple IR detection could be used here but for awesome accuracy it was probably sonic or laser distancing that was employed in my opinion.
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Electronics / Re: 50 dollar robot question
« Last post by Zevoo on November 21, 2014, 09:54:02 AM »
Okay I got the chip working! but now when i build the solution it comes up with this!
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Electronics / Re: 50 dollar robot question
« Last post by Zevoo on November 21, 2014, 09:01:36 AM »
Yes I use a socket. Ill press it to the socket again to just check that this might be the case. Thats the thing. As I said thats my third attempt so maybe I might have done something to the chip so if it doesn't work ill order another chip to see if that is the case. I don't know if it will be any useful info but I'm using the picture schematic (pdf)
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Mechanics and Construction / Re: Linear Actuator with feedback
« Last post by jkerns on November 21, 2014, 08:00:27 AM »
You can count revolutions of your screw to calculate the position (free rotation potentiometer, encoder, etc.) but you would have to initialize the count at one end or the other every time you power up.
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Mechanics and Construction / Linear Actuator with feedback
« Last post by nabberuk on November 21, 2014, 06:23:29 AM »
Hi,

I'm creating an autonomous sailing boat. In order to control the main sail and rudder i would like to use linear actuators instead of servos as they have a hold position that will use minimum power.

These actuators will be controlled by a raspberri pi/arduino. The mail sail will need to be able to cope with a higher force due to the wind pulling on it.

My question is, can i create a screw threaded linear actuator fairly cheaply and be able tell it the position to be set to?

I've never really tried to build my own actuator with feedback before?
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Software / Super fast obstacle maze solving. How?
« Last post by EXCodeX on November 20, 2014, 09:48:54 PM »
Hi guys!

I just want to get some idea about fast obstacle maze solving robot. Recently I saw a super fast maze solving robot at the Micro mouse competition.  Please refer the following link.

https://www.youtube.com/watch?v=_9Y4ODmweYA

I am wondering how they have achieved this much of stability and accuracy at this very high speed level.

What kind of obstacle a detecting sensors suitable for this ? any special motor controller? motors? and what kind of algorithms should be used  for noise filtering etc.

I searched a lot and tried to find those information and some sample code. by still i couldn't.


Your ideas are really appreciated . Thanks! :)
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Misc / Super fast obstacle maze solving. How?
« Last post by EXCodeX on November 20, 2014, 09:19:31 PM »
Hi guys!

I just want to get some idea about fast obstacle maze solving robot. Recently I saw a super fast maze solving robot at the Micro mouse competition.  Please refer the following link.

https://www.youtube.com/watch?v=_9Y4ODmweYA

I am wondering how they have achieved this much of stability and accuracy at this very high speed level.

What kind of obstacle a detecting sensors suitable for this ? any special motor controller? motors? and what kind of algorithms should be used  for noise filtering etc.

I searched a lot and tried to find those information and some sample code. by still i couldn't.


Your ideas are really appreciated . Thanks! :)

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Electronics / Re: 50 dollar robot question
« Last post by jkerns on November 20, 2014, 06:07:04 PM »
Hmmm. I would have bet money that would have worked.

You've covered the obvious things.

Odd things that I have seen include a chip not 100% pressed into the chip socket (did you use a socket or solder directly to the ATMEGA8?) or a chip that has been damaged.
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