hi I'm designing a simple animal frightener for class. It makes ultrasonic sounds (10kHz - 40kHz) to scare different animalsl. What do you think about the circuit, could it work?

OK, here's what I'd like to achieve: I want to "robotize" my guitar amp so that I can record and recall each potentiometer's positions (i.e. volume, tone, reverb, etc.).

Why is that? Because I don't want digital voltage controllers to interfere with the signal path within the tube amp, hence the need for a mechanical actuators for each potentiometer.

I already have some designs in mind, but I would like to know what kind of parts I should get (i.e. what kind of servo, what kind of optical shaft encoder).

I'm looking forward to read your advices

 

Soooooo, I got my new FEZ Panda II and I thought I might like it. I was right, I really do!

Basically, this Arduino sized board (compatible with some Arduino shields) is like the "FEZ Mini" on steroids! One of the many great things this board has is almost all the processor pins broken out to connectors that accept wires or shield pins. Other great items are a Micro-SD drive and a realtime clock. I did a firmware update without a problem. FEZ Mini programs are running just fine with an update to Panda II libraries.

We don't need nations, we need thinkers. While I love my country, it occurs to me that I love being a part of this community more. I am not, in my mind, an American when I take part in LMR-I am a citizen of the world of Geeks: Nerdistan, if you like.

I wanted to ask if we can use a digicam with OpenCV to give our robots vision. I have a Canon Power Shot A-470 7 MP digital camara and a few others which record images the old photo film way. Can any of these be used with OpenCV to give my robot perception of objects and colors? I don't want to open my digicam and explore inside though as I want to use it for other purposes as well. If not, then can a cheap unbranded webcam be used for this purpose? Please reply...

Looks like this---

Have you ever built a robot and then found your miniature servos were not quite strong enough?
Get yourself a flock of ducks! DAGU's little black ducks!

DAGU are now selling a 2Kg/cm servo that is only slightly taller than a standard miniature servo. The height difference allows for thicker, stronger gears and a bearing to support the load.

Can you Please teach me How to make a controlled Arduino Robot via Bluetooth by using an Android Device :D 

 

I found some Application in Play Store about the Bluetooth controller, it is called Bluebots ,a Bluetooth remote control for robot. (see below)

https://play.google.com/store/apps/details?id=blue.bots.free.matt&feature=search_result#?t=W251bGwsMSwxLDEsImJsdWUuYm90cy5mcmVlLm1hdHQiXQ..

I haven't seen anyone post about going to the Maker Faire Bay Area on May 19-20 2012, so I thought I'd post this. 

I know that RobotGrrl will have her own table at the Faire. She may have an LMR poster with her, and one of Chris' robots to display along with her own. Stop by her table and say hi if you are going.

Hi LMR,

As you might seen on the first page a new CP is going to happen in Berlin on 21-26 August in an airport :D 

I'd like to go, last time I got invited but even without an invitation the trip would be somewhere around 400 Euros including the airplane ticket, and if it will be like the last time it will be worth going. 

Frits can you post some more info on this when you get some time/more inside info?

Cheers!