I Shall Call Him.mini B

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Here is my small B9 robot made from the trendmasters toy from the 90s.
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I combined the Trendmasters Robot B9 and a RAD drive section with the EZ-B and a lot of work. For details of the build process, please click
here


Here are the side by side before and after pics of Mini B. This thread will be devoted to the programming phase.

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And here is my first attempt at programming him. I like the way I have the antenna moving, but I still need a lot of work on the "Danger Will Robinson!"

JustinRatliff
Commented March 2017
I adopted Brett's robot Mini-B, it's in my office right now. I haven't had much time to work on it in a while.

If you goal is to just restore it with a remote I would seek purchasing a replacement remote on ebay. I would not attempt to build a remote from scratch.

If you want to motorize it and use an EZ-B to controller it I would purchase a developers kit. Brett did away with the original motorized base, so I'm not sure what you would need for it, because Mini-B has a Rad robot base which is beefier. The DC motors are controlled with an h-bridge, you would want need one of those to control any DC motors.

For servos in the arms and claws I highly recommend spending a little more and make sure you get metal gear micro or sub micro servos! Because if you get the plastic gear servos and they break (because they will) and you have to redo something you'll be wishing you had paid a few more dollars up front for metal gear servos.

You'll also need lots of voltage regulators for your micro servos to make sure you don't over power them.
lab
Commented March 2017
I would like to start with a stock remote just to see if it works at all. My fear is that nobody would ever sell just the remote hence the reason I thought maybe I could cobble one together from a programmable rf remote. I dont know where to turn to even ask if this is feasible.

lab
Cardboard Hacker
Commented March 2017
It might be a steep learning curve, and would be difficult without the original remote, but you could likely program an arduino to do it. Of course this is an anti-arduino forum so I won't go into detail, but if you can do it with a or receiver and transmitter, why not RF.
JustinRatliff
Commented March 2017
If you are going to be interfacing something to it in my opinion is it would make the most sense to just go all in and interface EZ-Robot controls either an EZ-B and or an ioTiny.

If you wanted to interface an different RF control you'd be gutting the current controls anyway (I think) and likely adding new motor controllers.

If you consider an RF kit with controller and receiver you could buy from a hobby store is setup to run servos, you'd need a PWM motor controller for the motors and probably on/off controller for the sounds. Because usually most of the toys like that have an all in one receiver with a funky h-bridge to controller the motors. That setup does not interface well unfortunately.

In my opinion if you were to interface an arduino I don't see where that would save you work or parts required to retrofit it. In this case I believe it would add the additional requirement to learn arduino coding.

Does that make sense?
lab
Commented March 2017
Hi guys.

No, it probably is too much for me to take on, at least for quite a while. Eventually I may try to mod the little guy in a less ambitious attempt than bret's. I guess I just wanted to see my robot move because so far I bought a plastic statue of a b9 robot for a couple hundred dollars. I'll just have to keep my eyes peeled in the unlikely event that somebody sells a b9 remote on the 'bay.

Does anyone know if you can program, say, a car remote to read an rf signal if I can find somebody with the original remote controller to feed a signal to the auxiliary remote?

Lab
Robot
Avatarbret.tallent
Published on Saturday, November 24, 2012