Tag Archives: grisbot

grisbot catch and release slide show

Posted on March 11, 2013 by engineerzero

This gallery contains 11 photos.

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Grisbot Catch and Release

Posted on March 9, 2013 by engineerzero

Introducing the new, perhaps improved, L-catcher: Why an L-catcher? Because I think it can be used to not only catch but also release hoops. Here’s an example course for how releasing (aka ‘delivering a hoop’) could work: First we drive … Continue reading →

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Grisbot Hoop Capture Challenge

Posted on March 8, 2013 by engineerzero

Grisbot not only maneuvers, now it can capture and retrieve objects. At any rate, I’m thinking of making a hoop capture challenge. Roughly, the hook device and the capture operation look like this: Because the hook automatically captures the hoop, … Continue reading →

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Progress Bug in Scratch

Posted on February 26, 2013 by engineerzero

Instead of a conventional status bar to track the progress of the data transmission, I decided it would be more fun to make a ‘progress bug.’ The bug would look like the robot and march across the screen as the … Continue reading →

Posted in Uncategorized | Tagged grisbot, programming, progress bug, robotics, scratch | 1 Comment

Modifying Scratch Interface

Posted on February 24, 2013 by engineerzero

Perhaps I’m trying to fix something that isn’t broke, but I thought I’d try to improve the Grisbot:Scratch interface. Instead of clicking an icon in the corner to go to the specific waypoint data, you now click the waypoint sprite … Continue reading →

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Grisbot Scratch Communications Screen Layout

Posted on February 11, 2013 by engineerzero

This communications screen layout is an improvement over the one I used in Processing. The user goes to the comm screen, holds the robot up to the screen and turns it on, and calibrates the high values. Then the user … Continue reading →

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Broadcasting in Scratch

Posted on February 8, 2013 by engineerzero

Suppose you click on one sprite and you want other sprites to move accordingly? I have that problem when I click on the waypoint button and want the turn and move controls for servo timing to show the values selected … Continue reading →

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Custom slider controls in Scratch

Posted on February 7, 2013 by engineerzero

To acquire user input for the Scratch version of Grisbot’s computer interface, I’m using slider controls. In the above example, I’ve made a ‘slider icon’ in the form of a red ‘I.’ Position the mouse over the icon and hold … Continue reading →

Posted in Uncategorized | Tagged gris, grisbot, robotics, scratch, slider controls | Leave a comment

Having a Product

Posted on January 29, 2013 by engineerzero

One day Steve Jobs was given a presentation by Apple engineers on the status of a major project. He listened, frowned, and replied, “We still don’t have a product.” That’s the issue that has been haunting me the past couple … Continue reading →

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Rewiring the robot

Posted on January 18, 2013 by engineerzero

BEFORE: AFTER: The robot simply stopped working. I had to strip everything down to the breadboard, then build back up again. Now it seems to be working once more.

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