Actuators for GoPiGo?


#1

Has anyone added moving parts to a GoPiGo - a little arm, for instance? a spring-loaded one-shot ping-pong ball shooter? anything? i’m trying to figure out what it will take to add and control another motor, and what motor might be light enough and pull a small enough amount of power to give the GoPiGo an actuator or 2.
Thanks


#2

hey Coralreefk8, we have a few we’re working on, but we don’t have anything for sale yet. You have a few options:

1). You can use the microservo on the GoPiGo for anything you like. Right now we have it configured to turn a sensor around on the front, but you can take the servo mount and use the servo for whatever you like.

2). If you want to add a motor, you can look at one of the Seeed Grove motor controllers. I think they have a few that are I2C controlled. These should be accessible From the Pi, through the GoPiGo.

Hope that helps. What specifically are you trying to work on right now?


#3

John, thanks much, this is useful!

What I’m working on – I’m a mentor for an FRC robotics team, developing intro to robotics classes/workshops for our team members and kids in general. We want to use the GoPiGo as our teaching platform. For programming, it looks super. For assembly, a good start if it doesn’t prove too delicate (12-year-olds, tiny screws…). For mechanics, however, we need to add devices (which I’m pretty sure will require a larger platform with more widely-spaced wheels – no problem and a good lesson - and auxiliary power). The soccer-ball herding prongs are a good start, and I’m looking into a spring-loaded ping-pong ball shooter. We can start with a kicker, an arm, a climbing hook… that aren’t on a moving robot, but eventually we need to put the pieces together.

We’re particularly interested in using the GPG because we’re working on modifying our FRC robots to use a RasPi instead of the standard RoboRio controller, and it would be sweet to train our students on this platform from the beginning. (One of our mentors developed the nav-X XMP navigation sensor [http://www.kauailabs.com/category/products/], and he’s the one who suggested we check out the GoPiGo in the first place.)

I can post here to let you know how we progress.