Let's Make Robots!

Arduino project losing its mind

I'm using Ro-Bot-X's uservotino for my Venux robot. I recently had a problem where the sketch (program, for all you non-Arduino types) disappeared on me. The board would power up fine, but nothing would happen. Then I upload the sketch again and everthing is fine.

I thought it was an isolated incident, but it just happened again! Any thoughts on what would cause an Adruino to lose its mind?

Good Stuff to scavenge from a cell phone

I just ripped apart an old Samsung SGH-T739.

Picture of Samsung t739

I was planning on using the vibration motor that is used for silent mode. As long as I have this thing torn apart, I'm curious about your ideas for what else might be good to use.

Possibilities:

Looks for brass flies to eat
Using a
This is Venux, my steampunk-inspired brass fly trap. There's more information on my Build a brassier flytrap blog. One flower is complete, with touch sensor and … Read more

Why Tri? A stupid way to build a robot.

This is a robot built mostly to explore how you can steer with a combination of differential rear steering and a single servo controlled front wheel. This is a stupid way to steer. Why try it? I expect I'll learn a few things. Maybe you will too.

  • Video 1: RC Turning Test
  • Video 2: Motor Driver Test
  • Video 3: Spin Turn Test
  • Video 4: Turning Mode Test
  • Video 5: Adaptive Steering Test
  • Video 6: Why Tri Sound 'n Fury!

You can also see Why Tri's robot page.


Provides a compact way to add LEDs and sound to a small robot.
SoundnFury is a small electronics module with a piezo speaker and four red-green LEDs installed on a round Radio Shack circuit board. SoundnFury provides a compact … Read more
Tries to turn by matching front wheel steering angle to rear wheel PWM differential steering.
Using a
This is a robot built mostly to explore how you can steer with a combination of differential rear steering and a single servo controlled front wheel. This is a … Read more

Viable Potato Batteries?

I'm sure many of us experimented as kids with turning a potato into a battery. I recently re-lived this experience with my seven year old son. It is a fun experiment, but the batteries produce limited voltage and current, so they are not terribly practical.

Hopefully, bends plexiglass for robot making.
After seeing a video of Jeri Ellsworth's plexiglass bender, I decided I wanted to make one. I had an old baking pan that was retired and just waiting to become a … Read more

Ro-Bot-X Board Reviews

 

Introduction

Recently, Ro-Bot-X send me three boards to evaluate. I had previously ordered his Robot Builder's Shield V1, and commented with some constructive feedback and a review on it after using the board for Penny.