Let's Make Robots!

motorcontroller board [FIXED]

Hello

I am trying to build a segway, I know how I am going to make it, but I have been struggling to get the motorcontroller to work for days now.

I attached an accelerometer and a motorcontroller to an arduino uno. When I tilt the accelerometer 2 indicatorlights on the motorcontroller change, so this signal must be right. But when I measure the voltage at the motor output I get only 10-60 mV.

I tried using more and using less Volt (5-15 V) on the m.c. board itself. (I attached it to an old model train transformator)

Please Help

 

HC-SR04 arduino codes

Hallo everyone 

I want to make a robot with the hc-sr04 ultrasonic sensor on a servo.

Can someone help me with some (example)  codes for the hc-sr04 utrasonic distance sensor?

 

 

 

I will upload some vids/pics/info about my first robot, that walks.

Edit: just neede to replace the numbers from the original ping sketch. it works now

I need an ardupilot mega (2)

hi lmr

I want to build a quadcopter, but it is pretty expencive.

Does anyone known where to find a cheap (100-150$) ardupilot mega or mega v2 ( preferably with gps) or a alternative?

Thanks a lot!

Ideas for an useful robot

Hallo,

I want to build a useful robot for a school project, but I ran out of unused ideas.

I thought about a mine rescue robot and a fire and rescue bot.

 

Can anyone help me with something simular?

 

Thanks a lot!!

walk
Using a
This is my first robot. I build it in a few hours and it it most mechanic. The bot is made using two servo's and a few pieces of wood and plastic.   Read more

Servo coding (solved)

It is working now, thanks to everyone who helped me out!!!

 

 

I am trying to make my servo work,but if I start my arduino, with code and servo attached, it just goes to one position and stays there twitching. Can someone help me?

second try