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August 14, 2008 10:56 PM

Categories: General Robotics

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Rudolph

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Joined: 12/02/2007

There's a funky store in my town, La Curacao, that has pretty good prices on all sorts of stuff (generally when I go there I'm the only white guy in the store, but that's alright). We were there tonight and picked up a Tyco NSECT for my son for a whopping $17.

With the tiny charge in the battery that it came with we've already had seventeen bucks worth of entertainment. Think I'll go back tomorrow and get another one (on the other frequency).

edit == forgot I don't have to type the html link out

Watch out, don't step in the anthropomorphization.

Discussion:    Add a Comment | Comments 1-16 of 16 | Latest Comment

August 15, 2008 7:41 AM

I payed a bit more than that for mine, but then I needed mine in a hurry and couldn't wait for a great price.

RoboGuide - Your guide to hacking all things WowWee

August 15, 2008 1:34 PM

i use to have one and loved it

August 15, 2008 1:58 PM

That's pretty cool Nocturnal!

"Any sufficiently advanced technology is indistinguishable from magic" - Arthur C. Clarke

August 15, 2008 9:58 PM

So my son loves this thing. In the downtime that the battery is charging he just talks about it and how great it'll be when the battery is done (and how someone should invent better batteries and chargers, hehe).

Less than 23 hours old, on the fourth battery charge of the day, it suddenly stopped moving one leg. Then another leg started grinding. Naturally I opened it up, and found three of the six leg gears are just shredded. There's nylon fluff all over the inside of this thing...

Suckage. I'll probably go back and buy another one tomorrow, of the wrong color, and pirate it's parts to fix this one.

Watch out, don't step in the anthropomorphization.

August 16, 2008 1:08 AM updated: August 16, 2008 1:10 AM

IIRC, the charge that comes with it is a trickle charger, you should be able to pickup a quick charger (or more batteries), since its just a standard 7.2volt R/C car battery.

Sorry to hear about the gearing. If you do dismantle it, pay attention to how it was assembled. Memory suggests that getting all the legs and gearing back together and synced properly was time consuming.

RoboGuide - Your guide to hacking all things WowWee

August 16, 2008 6:10 AM

Nice hack Nocturnal! Looks like the N.S.E.C.T. is a good robotic base to start with.

Horia Pernea
http://www.roboticage.eu

August 16, 2008 11:11 AM

Nocturnal,
Ya, as soon as I got a look inside it I pulled out the digital camera and got many shots of leg/gear/cam position for reassembly. Very happy I didn't just yank all the legs off before thinking.

Now he's decided that it'd be okay to use a green one, so I won't be pirating parts from the new one to fix it. Good kid though, he says I can have the old one, so I can graft the nerf gat to my RSMedia :) That should be fun. Hoping the gun just takes an on/off switch to fire rather than any logic.

Re: battery and charging; The manual said 5.5 hours for the first two charges, then 4 hour charges after. My plan was to go ahead and use the supplied trickle charger the first couple times and then switch to using my ~30 minute charger. I don't know if using the 5.5 hour trickle the first couple times is necessary over just using the fast charger from the get-go. I just figured it can't hurt for the initial charges to be trickled.

Watch out, don't step in the anthropomorphization.

August 16, 2008 6:31 PM

:) I've still got the gun in one of my junk boxes, I had also though of mounting it to the RS Media, but it seemed a bit large. Don't take the gun apart unless you have to. I suspect its just a motor and maybe a switch. If you'd like, I can dig mine out of my junk box and have a look, since its already been removed.

RoboGuide - Your guide to hacking all things WowWee

August 16, 2008 7:37 PM

Already pulled it apart, then went hunting for the plastic piece at the end of the spring :) Found out the two thin wires go to a button that appears to prevent firing while retracted, the two big wires power the motor. One direction of the motor runs the up/down, reversing the motor runs the loading mechanism/firing pump.

Hooking it straight to the 7.2v battery makes it load/fire. Now I gotta figure out what kind of amps are pulled when that thing is pushing against that spring, so I can figure out power from somewhere else. Oh, and how in the world I'm gonna trigger it.

Watch out, don't step in the anthropomorphization.

August 16, 2008 7:41 PM

Two options, you can hook a micro-controller into the serial lines between the media board and the main board. If you choose your command set carefully, the media board will be able to issue commands to your microcontroller that are ignored by the body. The other option is to use the GPIO pins off the media board for control.

RoboGuide - Your guide to hacking all things WowWee

August 16, 2008 10:52 PM

Nocturnal said: Two options, you can hook a micro-controller into the serial lines between the media board and the main board. If you choose your command set carefully, the media board will be able to issue commands to your microcontroller that are ignored by the body. The other option is to use the GPIO pins off the media board for control.

 Both of which require me to get off my, um, woohoo and actually do your serial mod in order to program the Media, right? Or are there built-in commands (via the remote) that are not translated to real actions? Not that I have a problem with the serial mod, it's mostly the getting off the woohoo part...

We went back to that store and found them all sold out of the nsect (at $17, surprise). Kiddo is all bummed. I tell him how a replacement would probably wear out just like the previous one anyway. We checked out all sorts of RC cars and trucks and found nothing. Eventually we ended up at Toys R Us, and found the nsect for $60. So we bought a RoboQuad :)

Haha. He'd saved 7 dollars. I offset the nsect at $17  to replace a $12 (my $5 offset) item at RatShack that failed too. Now I've offset a $40 item cause I felt bad the $17 thing broke too. All said and done, I'm out of pocket just over $60, and his 7 bucks almost covered the 4 C batteries we had to buy for the quad... Fun fun fun being a parent.

Watch out, don't step in the anthropomorphization.

August 16, 2008 11:02 PM

Hooking a micro-controller into the serial line between the media board and main board would not required access to the serial console. You'd use already existing scripts to do the work, and call it from a bodycon.

Using the GPIO lines, would require using some extra software and stuff on the media board, so having access to the serial console would make life easier.

RoboGuide - Your guide to hacking all things WowWee

August 17, 2008 12:07 AM

Aha! It didn't click in my head you were talking about the media/main boards' serial connection (even though, scrolling up and rereading, you clearly said that).

Being pretty green at this electronics bit; I can just tee the micro into that serial connection? So two things would be receiving the signal sent by the media board.

Okay, I'm off to read your Media hacking pages and the Robosapien.tk forums

Watch out, don't step in the anthropomorphization.

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View unverified member's comment - posted by uhhhhh

November 10, 2008 6:01 AM

I don't happen to have the diagram in front of me, but, there are two wires going to a h-bridge circuit for each motor (so four wires, going to two circuit boards in the base, connected to the two motors) from the main circuit board. I can't recall if the wires are active high or active low. Applying ground to one wire in the pair, and +V to the other wire will cause the motor to move in one direction, reversing the wires will cause the motor to run in the opposite direction.

RoboGuide - Your guide to hacking all things WowWee

Discussion:    Add a Comment | Back to Top | Comments 1-16 of 16 | Latest Comment

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