Let's Make Robots!
Price: $1.49 USD

 Collected by one member
This connector is a single-row, 40-pin, right-angle male header strip that can be broken into smaller strips and is great for low-profile connections. Read more

SED or Smoke Emitting Diode

This is an attempt to record the very edge to which an LED can be driven. A failed attempt.

burned_leds_500.jpg

I tried to post this as a component page, but it would not take embedded video...

The LEDs I tried are rated at 30 mA maximum. The forward voltage is between 1.9 and 2.1 V. I used a power source of 8.1 V  and a variable resistor in series that could range from 5000 to 0 Ohm.

command an actuator through wifi
Using a
This describes how to use the GPIO on a wireless router as binary outputs and how to control your electronics from the linux commandline. Software I started out … Read more

Make robots talk.. to each other.. dirt cheap!

UPDATE: More info on the subject here: http://letsmakerobots.com/node/5194


Original post:

 

I have this thing in the back of my mind that "the next step" for me must be my robots talking to each other.

Simple Inverter Updated: A killer project if u ask me(literally)- Gave me quite a few 230v shocks while debugging but finally it works. Read more

Keepon!

How could you all have forgotten Keepon!

Those two eyes actually are two cameras! and the nose is a mic. have a look at the site http://beatbots.org/

COSMA - Update 1

In the meantime I named the robot astronaut Cosma, a maiden name, ancient Greek for Cosmos. Below you'll find a more specific design study. I think I will 3-D print the main body and the head. I've furthermore tested a FSR (force sensing resistor) as a kind of pain receptor and the ArduEye.

Reading Words off Pages and Walls using OCR, Start of Indoor Localization

Today my robot read its first words with its own eyes!  from around 8ft away!

Got Tesseract OCR going on the bot.  Its reading words close up and from distance with large fonts.  This will be the start of my indoor localization system.  Bot will be able to determine what room it is in and where it is within the room to some degree, by remembering what is written where in the house and using it as landmarks for knowing its position, with a little geometry.

I'll post some video of this in action as soon as its polished.

Navigate avoiding ostacles, Line follower mode.
Using a
Yes, Another Wall-e type Robot! This is a RAD 2.0 old robot base, that have suffer a serios transformation. I cut the first free wells and mounted over the rest … Read more
Fritsl and a few others here helped by those walkthroughs and tips. See fritsl im am a perfect expamle of he who reads does it.All those and a few mistakes brought … Read more

Wild Thumper Controller - Packaged Software has Issues

If you are trying to used the Dagu motor controller with their Wild Thumper vehicle, which is great, but can't get it to respond properly to a RC tranmitter, make the following changes to the software. Get off D0 and D1 and move to D9 and D10, which are PWM channels. You don't want a PWM repetative pulses (every 22ms from a Spektrum transmitter) to clobber your serial interface when loading programs. This is why you get a sync error from the compiler if you follow the manual.

This durable tracked chassis is a complete robot base for your tank-like robot. With a battery holder, two DC motors, and two independent geared drive trains … Read more

Service Droid

Working for DAGU means I need to try and design products that are not just cool to look at or play with but are also affordable and easy to use for the beginer. Sadly this balance is not easy to acheive. Usually more fun / cool functions means more complexity and cost.

Update: been through a few revisions, new pics added of the last mods and the latest mod-in-progress (front+rear castors, mid-mounted motors and batteries)  This … Read more
An iteresting light show
A modified USB flash drive. I added 2 multicolored IC controlled LEDs from a Thermaltake 120mm PC Fan. The LEDs are linked in parallel and are in series with a … Read more