Let's Make Robots!

upgrading from small motor

Let's say I have a motor control circuit that's too small. It could be the motor output of a Picaxe, the adafruit motorshield for arduino or a the innards of an old RC toy. The main thing is that it has two output wires, both capable of delivering positive and negative to make a motor turn both ways.

What if you want to use a bigger motor that needs more power? Below are three circuit diagrams

motorkontrol.jpg

How to use solar panel?

I bought this the other day -  http://www.radioshack.com/product/index.jsp?productId=2062564 to use for a beam bot. Problem is, it was very cryptic with the intructions, so I'm not sure where to solder to for + or -.

If anybody has any experience with this, I'd love to hear your thoughts.

Thanks! 

phototransistors

anybody tell the differance between phototransistor and a photodarlington

How to modulate Sharp IR Distance Sensors

Hi All,

 

I am attempting to measure distances of objects with a Sharp IR Proximity Sensor (such as the GP2Y0A02YK0F).  I would like this sensor to work in an environment that is somewhat `noisy` in the way of IR light (multiple sources of IR light that cannot be controlled).  Is it possible to modulate the  signal of the Sharp IR sensor to filter out background noise?

 

Thanks! 

 

let my robot be heard

Hi can anyone help on this....

I am trying to make some noises for my robot (in progress) via a picaxe 28x2 sound commands. I first bought a small piezo but it was way to quiet so i bought a bigger one, about 60mm D which i thought the sound would have been louder but it isn’t.

LMR CAD Team

LMR_cad_team.jpg

 

LMR CAD TEAM

Join the LMR CAD Team! We (Krumlink and -Gary) are a group of Experienced CAD users capable of designing stuff in CAD! We use the STEP file types to share files between all (Autodesk and SolidWorks) software. Put your name in below, and begin collaborative CAD design!

 

This post will be improved upon later, but we will post our collaborated CAD drawings, etc

Robots Community and Tutorials www.botstop.net

Hello every at Lets Make Robots, Happy Birthday.

I would like to make you aware of a website I am starting up, BotStop.NET. You can upload your robot to have it reviewed by others in the robotics community, read and make suggestions towards robotics tutorials, take part in competitions to win parts and components for your creations, or chat in the forums.

my super ex-girlfriend robot

Hi, everybody!

Does anyone have "my super ex-girlfriend robot" movie in his collection? I remember there was an episode with little robot carrying a flower or something... I think of building a replica of it as a gift to my wife. Anyone can help with screenshoots from movie picturing it or maybe even little clip cut out of it?

Thanks :)

I got some trouble over the first project.

Hello I am trying to do the first project of the robots, http://letsmakerobots.com/start I bought all the things needed but I got some trouble I dont know how to connect the sensor, its exacly the same as the project uses. I am getting lost at the part that says that because he refers to some other kind of sensor and than there is no image to understand how.