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Recent Posts

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Software / Interfacing PS2 Controller with AVR
« Last post by Mohamedsaa3d on Today at 01:16:49 AM »
Hello , i want an easy library for PS2 to use it with AVR microcontroller
I used Arduino but it was damaged  :-\
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Electronics / Re: Precise (+-2cm) indoor navigation system for robots
« Last post by marvelmind on Today at 01:08:30 AM »
Thank you.

That is exactly what it is designed for. And that is what our customers are using it for.

This particular system is made for indoor, since it doesn't have protection against rain, etc. But for large indoor spaces (factories, hospitals, shopping malls, museums, airports, etc.) it suits very well.
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Electronics / Re: Motor Question
« Last post by cyberjeff on Yesterday at 08:01:27 PM »
There are a slew of wheel chair motors:

http://www.ebay.com/itm/like/291536835580?ul_noapp=true&chn=ps&lpid=82

Perhaps, put a bigger wheel on it, but not too big. A motor that is a bit oversize will run more efficiently. PM magnet motors like to be in the bottom half of the torque curve (which is more like a straight line running from no load to stall).
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Electronics / Re: Precise (+-2cm) indoor navigation system for robots
« Last post by cyberjeff on Yesterday at 07:51:06 PM »
Interesting idea.

I can see uses for delivery services in a large facility. Send a robot down to room 303. Or for an automated mower for outdoors. Both would need other intelligence, but they would always know where they were.
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Mechanics and Construction / Re: Where can I get this pneumatic actuator
« Last post by cyberjeff on Yesterday at 07:38:51 PM »
looks custom made to me


Sure does. Nice work.

There were, at one time, a slew of air shutter releases for old school cameras.

http://www.bhphotovideo.com/c/product/81702-REG/Kalt_NP10129_Air_Shutter_Release.html

Pneumatic devices can deliver a very quick pulse. The old player pianos ran on a vacuum, working against atmospheric.

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Mechanics and Construction / Re: Where can I get this pneumatic actuator
« Last post by bdeuell on Yesterday at 04:40:54 PM »
looks custom made to me
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Mechanics and Construction / Where can I get this pneumatic actuator
« Last post by camerond on Yesterday at 10:43:03 AM »
New Here.

I saw a video on youtube and I was wondering where I could get this pneumatic actuator/piston from.
https://www.youtube.com/watch?v=ZtFx4BUKxXA

It is a super small actuator.

Thanks!
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Electronics / Precise (+-2cm) indoor navigation system for robots
« Last post by marvelmind on Yesterday at 04:49:38 AM »
Hello guys,

We have a precise (+-2cm) indoor navigation system (Indoor "GPS") that is designed to provide real-time location coordinates for autonomous robots, vehicles.

Demo how it works:
- https://youtu.be/ttOKjmNtpRE - a mobile beacon is traced in real time in small room
- https://youtu.be/PFgNPkLGCDk - a large scale (up 30 meters between beacons) demo

Basics: You have stationary beacons (not Bluetooth or WiFi) every 10-50 meters. And you trace a mobile beacon on your robot with +-2cm precision. You get the coordinates either directly from the beacon on your robot via USB or UART or SPI or I2C; or you can get data from the central controller - it is up to you - epending on preferences of your system.
Detailed description of the protocol is available.

More information is on http://www.marvelmind.com/
I will be happy to provide you with more information, if needed.

The most important is that the system is readily available and you can get it within 5-7 days (shipping time) :-)

Kind regards,
Maxim

email: [email protected]
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Electronics / Motor Question
« Last post by sohn on August 31, 2015, 04:33:32 PM »
I am looking at building a robot and I am trying to figure out what motor to use. I believe that the robot will weight no more than 100 lbs and it will have two drive motors (one on each side). Also I could use some help figuring out which controller I should use to control the motors.
Thanks in advance.
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Electronics / Re: Transmitter and Reciever for Thrusters
« Last post by Lacrosse24 on August 31, 2015, 08:19:52 AM »
Thanks a bunch, you've been very helpful!! ;D
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