Let's Make Robots!

Happy Chinese Lantern Festival: 15% OFF Coupon Code on ICStation

 

Details of the Coupon Code:

(Coupon code can be used for all item, except the items are with discount now.)

Dagu mini pan/tilt kit and another question

I'd like to try using the Dagu kit for another purpose (non-robotic) and I'm wondering what voltages I am supposed to feed the motors?  Also, to reverse motor direction, do I just reverse polarity?  I want to use the Dagu mount for a small camera (webcam).

 

Help with code for NanoATMega328 / 2 x DC Motors / 9g Micro Servo / HCSR04 Ultrasonic Detector

Hi;

I have built an obstacle avoidance bot for a School Robotics Club I had the motors running using a demo mode (spin left the right) but have just connected a servo and an HCSR04 Ultrasonic Detector and I need some help with the code to get it up and running.

The Bot uses:

Chassis with 2 x Geared DC Motors

L298N Dual Motor Controller

Worm Brains!

Nemesis2065 showed me this project.  Awesome! Thank's Nemesis.

I say we implement MarkusB's alogrithm on an FPGA and make our own worms. :)

Kossel Mini Hotend Question

I'd normally ask Hoff these questions, so it's with a bit of sadness I ask others.

Does anyone know where I could get an effector for my Kossel Mini printed?  I've come to the conclusion Hoff was right about my cheap eBay hot-end and would like to switch out for the E3D v6 hotend, but my fear is I won't be able to print out the respective effector given the cheap hotend I have.

Openscad PhoneHolder

Link to github
Actually modeled after a NGM Legend 2(an android phone), but i added a height parameter, so it can be modified.
I count to add more files later to the repo.

STL Viewer (beta)

Model:
Rotate: |

Using two power supplies with one on / off switch

Hi;

I have built a robot using the parts listed at the end of this post.

I have been having trouble with the code and getting the motors and the servos to work with the detector but I now believe that this is due to a lack of power.

I am only using 1 x 9v Non rechargeable battery. I can add another 9v battery or use 4 x AA 1.5v batteries.

The problem I have is how do I only use 1 x on off switch? Could I connect this to a common Gnd? 

programing a Tiny13a directly from a mini USB board

Is that possible?

I have a handful of the tiny13a chips and would like to program them but all I have at the moment is an Arduino mini USB board. I found a couple of tutorials on how to program an Arduino Mini using the board and I found a few tutorials explaining how to program a tiny13a chip using an Arduino board but there seems to be a small gap there that I can't figure out.

Do I need to get myself an Arduino Uno or a mini or something? The USB board has a TX and RX but that's it.

 

Remote control via IR sensors

Starting my first robot, at age 73, called Orange Crush based on color paint I used.  It's based on McCombs Ardubot II but it's going to be a living proof of concept until it falls over or the batteries won't run it.  Right now I'm trying to use Radio Shack IR sensors as a remote control.  Since these sensors will only cover 90-120 degrees, I plan to mount them in a triangle or square so one will always be pointing at the remote control.