Let's Make Robots!

 

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Gipsy, son of Sticky

As seen in my previous post, first attempt to build a quadrupod ended with a jump from the desk.
Hopefully, I learned a lot and I was ready to launch the next experiment.

My wife just received this very nice material from a friend and there’s enough for me too :)

I think the best english translation is paper foam board, but you will see it later.

Let's start a video blog

I think it's time to summarize my projects and start a video blog.

I already saw wonderful things from other members, this is a very small contribution.

first a quick intro on current projects. Then I hope to have more practical videos

Hope you'll enjoy a little bit

Sticky, born to disappear :)

As my 4WD slowly evolves, I wanted to think on my next platform.

One of the form that fascinate me is hexapod robots. They quite always looks organics in their moves and it seems that they can be easier to build than full crazy out of price humanoids ;)

Simple Camera Pan & Tilt

I wanted to create an unlimited 360° +/- pan with 180° tilt sync'd to my camera shutter (Prism)


So I got some scraps from the garage and made this thing - I know the quality is really lousy

I'm somewhat unsure if the fuel tubing couplers will be strong enough (bottom/pan coupler isn't connected yet)

Both mechanisms move "fairly freely" so . . . we shall see

 

It's a start - more later

:)

 

PID Tutorials for Line Following

Hey there guys. This post is outdated. Visit http://letsmakerobots.com/node/39972 for the updated tutorial.

Hello LMRians,

In this writeup, I will try to create a tutorial for tuning your robot using PID to follow a line. This tutorial won't go deep down into the details of PID and its applications but will just attempt to show how a robot can be tuned with the PID parameters to follow a line.

12V-30V Arduino Power Supply

So one project that I've been working on lately is a 24V Brushed Motor Controller Shield for Arduino. One of the features that the shield must implement is a power supply capable of power the Arduino with more than 15V, activates the Arduino when the input voltage is greater than 12V, and power any necessary gate driver circuitry. I finished Rev 1 of the power supply and plan to add one more revision to the power supply circuit before designing the reminding parts of the shield. 

The biggest moments in life..

Hi Guys,

I just figured I’d share this moment with you. The picture was taken just after my wife had been given birth to our second daughter a couple of days ago, December the 22. Guess I’m not much of a planner ;) But hey, at least it was not on Christmas eve!

Thank you for the greetings I have received by mail - as always, it’s amazing to feel your friendship :)

 

Royal AP8000 8000mAh USB battery for $12 !!!

I just visited one of Costco's Clearance Outlet stores nearby, and found this LiPo battery pack for $12!  Just because it was out of it's packaging!

5v 2.1A out, wich charge level meter on front panel.  Weighs about 12oz...

Had to buy two of them  IMMEDIATELY before someone came to their senses!

It retails at Costco for $40, which is still a great price for LiPo  8000mAh here in Canada. 

SparkFun launches robotic parts & "Robotics 101" video series

Actobotics Logo - page

December 20, 2013: SparkFun launches the Actobotics robotic components online.

The first video shows Robert from SparkFun introducing the product line and talking about the various items.

"Do not average your Max-Sonar results..ever!" who knew?

I've apparently been mistreating my MaxSonar EZ-1.   I can't find where i stole.. er... borrowed my idea from for averaging a series of responses to reduce the inconsistencies, but I was looking up some information on the Arduino pulseIN() timeout (Thanks Oddbot!) and came across http://playground.arduino.cc/Main/MaxSonar   ... Yeah... I know it should have been one of my first places to look, but...

Two Arduino problems fixed in one day! Halelujah!

 I've been procrastinating on two problems that I've not been able to resolve  - or google an answer for in my code.

 

1) Slow response in the Serial.parseInt() function... yes google gave me lots of people with the same problem, but I finally found a reference to  Serial.setTimeout()  ... well what do you know...  I set Serial.setTimeout(50)  in my setup... and low and behold...

  SNAP RESPONSE now!!!!   

 

Congress Talks about "Trash Robotic Router Platform". My personal project.

I wolud like to share with you, two talks that I have made this year in two national security congresses.

In both talks I present a Router based ROV [Texas Ranger] and a Fonera quadcopter [Atropos] both presented in LMR already:

http://letsmakerobots.com/node/23417

http://letsmakerobots.com/node/28143

The aim of "Trash Robotic Router Platform" is pretty the same of many members of this site. Use all you can get lying around in your home!

 

 

Finally got a "live" Sonar screen in HTML5 canvas / Javascript working

Prefacing everything i do with "I AM NOT A PROGRAMMER"...

Ok, so it's nowhere near perfect, but I thought I would post the code here in case anyone else wanted to tinker.

Web Control page for Autonomous Rover

 

The sonar.php  file which displays the instrument expects it's data as a JSON encoded data set in the form of:

{"ardtime":"43942","pan":"25","radius":"117","heading":"38.6"}

Five free Insect Bot Mini kits

This is a free (well, it does not cost money) giveaway of 5 Insect Bot Mini kits.

 

All 5 kits are gone now, please do not request anymore but you still can comment :-)

 

Review: The Service Droid kit from Dagu

I have received my Service Droid kit along with the Rover 5 robot chassis on a Monday evening. Excited, I opened up the package to reveal 2 big boxes, one with the Rover 5 and the other with the actual SD kit. The base comes assembled, with a battery box, a screwdriver (with a magnetized Phillips end), an Allen key (hex wrench) and a little bag with silicone lubricant. The droid kit comes with lots of parts grouped in separate labeled bags for easier assembly. To do the assembly, I used a cutter, a plier and the screwdriver from the Rover 5 box.

Interactive Stochastic Learning Automaton - cleaned up code

I have cleaned up the interactive Stochastic Learning Automaton code I once wrote and attached it in this short blog. Just send '0' or '1' via serial monitor, if a chosen action was favorable or unfavorable and see how the automaton learns to chose the right action over time.

Bunniduino®

Today I found this in a local Carrefour store in Qingdao for 70 RMB. It has two RGB LED's which illuminate the ears and a couple of buttons. When certain buttons are pressed, it plays some songs or speaks some text (in Chinese).

I will probably hack it and build an emotional/chat robot out of it. In a first step I will take it apart and see what's inside (if my daughter let me...)

USB Microscope

I got myself an Andonstar USB microscope of eBay and must admit that I’m pretty impressed with the resolution and magnification.
It is a great tool for inspecting SMD soldering joints and the kids had great fun with it this exploring small insects and flora this summer.

So if you’re wondering what to get yourself this Christmas, this might be it.

Some pictures from the microscope

Wireless winter weather wonders - weather prediction with a swarm of *Bees

Here's a little project I've put together using a bunch of components from Seeed Studio:

Wireless Sensor Node