Let's Make Robots!

How-to for Thomas

First, lets state our goal:
We want a robot to drive to dark areas while avoiding stuff on the way using various sensors.

As with everything, we break it down into smaller pieces. We test each one individually, record any numbers we get (ADC readings and the like) and then start putting them together. While doing each of these tests individually, it helps us figure out how we are eventually going to put them together.

If someone told me to accomplish the goal above, I would do it just like this:

AC Motor Speed Control Triac PWM 0-cross

Hey guys, I am working on the CNC and putting together a speed control system. I went as far as buying a $20 "Router speed controller" which consists of a pot and a BTA41-600B triac basically. The control is terrible and "hiccups" at anything less than 1/2 speed or so.

Obviously, an Arduino would seem to fit in here. I did the googling and I think I am down to one sticky wicket.

The Passing of a Loved LMR Member.

Unknown to many LMR members, but here from the beginning, has been Bondo the Dog. The best damn shop dog I have ever had the pleasure of knowing and never further than my ankles as I recorded almost every video posted here at LMR.

Bondo passed today at 5:00 PM. Bondo was my protector, companion, best God Damn shop dog who ever lived, and my best friend. He will be dearly missed. He was my hero.

Rocket Brand Studios/ CtC Update 1.14.12

Well, RBS had a pretty darn-good December and it seems the Tadpoles are exactly what folks have been looking for. I decided to take the move to the new house as an oppertunity to go through the whole shop, tune-up, square-up, shapen and/or lube just about everything I own. I did a good tear-down/rebuild of the CNC and I even built a whole sound-proof room just for milling.

Yup, RBS is growing faster by the day. 2013 is already shaping up to be a good one. 




Cheap RX/TX via Fake X-bee? (X-bee footprint devices)

Hello, hello.

I am looking for a new, cheaper RX/TX system to carry. I would love it if I could find a cheap, solid device that shares the footprint and pinout of an X-bee. There are a few out there that I have found, but I cannot find any review etc. to help me determine if they are crap or not.

Does anyone use such a device? What is it and do you like it?


...And if we forget about the X-bee footprint/pinout issue for a sec, are there any RX/TX systems that folks are using that they particularly like?

Its been a long time coming, but I am proud to introduce you to the Tadpoles...   The Tadpole is simply a perfect platform for the beginners and advanced robot … Read more

Rocket Brand Studios/ CtC Update

Hey guys,

It has been a whirlwind around here for quite a while... Ever since Maker, it has been non-stop (and wonderfully exhausting).

I thought I would take a quick moment to record a video and let you guys in on the chaos and upcoming goodness.

Help finding cheap bulk X-bee headers

Hey guys, I am really stumped on this one.

I am running low on x-bee headers -- 1x10, 2mm pitch, female. I have done eBay and all the "hot spots" (jameco, goldmine, etc) and can't find these darn things! I have gone through all my email as well as hard-copy invoices and I can't even figure out where I got them the last time. 

I can, of course, find them at retail ($.90 to $1.00 /unit) but I can't seem to find them anywhere in bulk. I want to buy at least a 1000 and they should work out to < $.15/unit --Probably closer to $.05 /unit or so.

How To: Arduino to Parallax Serial Terminal

Well folks, I finally got around to doing this...