Let's Make Robots!

Zen Master

I'm building a robot with many different voltages here.

I have managed to avoid voltage regulation by cheating, I run the motors that are rated for 4.5 volts at 6 volts from a RC NiCd battery, and I use an RC Electronic Speed Controller that can give 5 volts to the RC receiver, the wireless camera and the Picaxe. I feared that this might be a problem and turned to the all knowing LMR forums for help. And help I got...

Fritsl answered:

RC power for my picaxe

I'm using RC ESC's to drive the motors in my current robot project. These speed controllers has a built in power regulator (called a BEC) that is meant to power your RC receiver. I've measured and the voltage produced is a steady 5.03 Volts.

Can any of you think of a reason why I couldn't or shouldn't use this as power source for my Picaxe 28x1 ? 

 

Can't seem to insert hyperlinks with Opera browser on my old iMac, so here are a link if you wanna read more about RC ESCs or BECs

http://en.wikipedia.org/wiki/Electronic_speed_controller

finding cheap RC ESC (speed controller)

I love RC ESCs. They are electronic speed controllers that you connect to a servo output on a RC receiver or a micro controller, and they give you full step free control over a big motor in both direction. Most of the ones made for RC cars work in the voltage range 6-8.4Volts, but there are several alternatives for people who plan to run up to 24 volt motors in almost constant stall at a gazzilion amps (read robot war contenders).

But I'm the eternal cheapskate, and wants the cheapest there is.. So far I've found this 

This was basically just a test to see if the rubber track set from Tamyia would fit on a Mr. Basic frame. It took about an 30 minutes while watching TV, to test out … Read more

the search box

I'm sure someone has thought of this before, but it would be really silly if nobody had:

We're really looking forward to LMR II, but it's a shame the search box is still not gonna work. Have you considered using Google as search box? http://www.google.com/cse/?v They have all the info you need on their pages, and it's free. But you need a Google account.

I've seen it used on a load of pages, you end up with a small Google logo inside your search box, and the result page looks like a normal Google page, but only has hits from your own site and your own logo on top.

Mr. Basic axles

This one goes out to those who participated in the first Mr. Basic Challenge.

The first batch of kits that DAGU Electronics sent out had some bad parts in it, and DAGU was quick to replace those parts, and the problem is fixed on the later releases.

 Now I wondered if anybody got 4 replacement wheel axles (2 fronts, 2 backs) and kept the old ones? You see I need those old ones...

So if anybody is willing to post'em to Norway, I'd be really grateful.

Nerd

So, I've been to London, UK.

The entire department at work went there for "seminar" which means we did two 30 minutes meetings, And spent the rest of 3 days shopping, sightseeing, going to concerts and other touristing...

Our plane back was delayed and the bunch of us spent the time talking about what we'd done. Some had bought shoes and clothes, one girl had bought jewelery, one had bought records, and so on..

What about yourself? -someone asked me:

real shops in London

Does anybody know of any interesting robot parts shop in London town, UK?

I'm on my way there tomorrow on a business trip, and have time to kill.

I'd love to go into a shop and touch and feel stuff before I buy...

 

TallyHoe! Man Euver

Basic progress

Here are a map of parts in the Mr. Basic kit

Mr.Basic manual page 3
So far I've dicharded:
The wheels (13&14)
The bumper (17)
The battery holder (18)
The front axle shift metal fixer (20)

and I've mutilated/hacksawed/drilled:
an Axis joint device (5)
both Front axles(7)
The Chasis (11)
one Decelerated pinion chassis (12)

And I know some of the copper tubes (22&23&24) have a dark future ahead dating my trusted hacksaw.

ROV parts

I'll do some research into building a ROV.

I'll start by finding nearby vendors and usefull online tips. 

Since I  live in Norway many of the links posted here will be worthless for anybody but myself, but then again, this is my blog, why should I care?

Relay Wiring for "H" Bridge Relays 

tube for sceleton