Let's Make Robots!

Most Price Efficient Actuators for larger hexapod

I'm wanting to create a hexapod based robot out of PVC, maybe about 3 foot tall.
I'm not wanting to make it have to carry anything heavier than let's say 20lbs.

I'm still learning about some hardware in the actuators department, and know a lot of science, but not a lot of physics formulas. I'm considering trying to control each leg's from raise up to move forward by a solenoid, but need to know if I want to use a bi-directional solenoit, stepper motor, or something else to have the legs move forward and back when raised.

[Solved] Problems with programming Dagu Spider robot controller card

I am new to Arduino, prior to that I used Raspberry and other computers for programming.

So I tried to install the arduino software on SuSE Linux.
After installing the dependencies (e.g. arduino needs avr-libc which needs
cross-avr-binutils, avrdude needs libftdi and so on,
is a good site to find all that) I was able to install the rpm packages with
arduino 1.0.6.
Connected the Spider board with a normal USB data cable.
Red LED13 blinking which means bootloader waiting.

Aduino Uno with more beef

I have been quite frustrated using generic Arduino Uno boards with peripherals such as digital compass, IMU, and nrf24L01 radios. The problem usually manifests itself as not enough usable I/O pins, not enough power or ground pins, wrong sex on headers, an most importantly,insufficient 3.3V power. I have boards from Dagu & RFRobot that satisfy most of these issues but I need the Uno pin format to cleanly interface with the Dagu Scamper ComMotion shield.

Solution. Design my own board.

Question regarding Spider robot controller/Arduino Mega (1280)

Question regarding Spider robot controller/Arduino Mega (1280)

After some search I found the pin layout of the Spider controller:

One question:
Is it correct that the inner female pin is ground,
next inner male pin is GND
and outmost male pin is 5V?

All according to

USB ASP programmer not working with Arduino Micro

Hello everybody!

I'm currently working on a project using an Arduino Micro. Unfortunately, due to a soldering mishap, the micro USB port is not usable. Now, I'm trying to program the Arduino with its ICSP header using a USB ASP programmer. Whenever I try programming the Micro, I get this error message.

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IR Tank Battle Bots

I want to make 2 robots out of Lego with tank treads and a turret that will shoot an "Ion Cannon" at the other bot. When hit, the bot will rock its wheels, make a sound and a point given to the victor. I want these to battle in an arena of fish tank gravel, and the turrets only will have left-right degrees of freedom in a maximum of a 180 degree spread (powered by a servo)

RobotShop Acquires LetsMakeRobots.com

RobotShop, the leading source for robots and robot parts on the web already hosts one of the largest communities of robot and drone enthusiasts. In 2010, in order to better serve their community by providing free information and articles accessible to all, RobotShop acquired GoRobotics.net, one of the most popular and oldest blogs on robots.

4 Axis Robotic Arm

     I am a beginner in robotics and currently I am trying to build a 4 axis robotic arm with rotating base and I need Kinematics Equations for this project . Can anyone help me with this. 

2D model of my robotic arm is attached

RF Link query

I have been designing a RC remote control for my plane/tricopter. I have documented the project at LMR 


Well,I have run into a problem. The NRF24L01+PA+LNA modules with SMA antenna I have been using so far has only been proved to give reliable connections upto 250m approx, but I want to make solid connections upto 600m atleast. Thus the NRF modules can't be used. I have some options here,either I will buy a radio from a online store, or I will plug in some RF link in my module.