Category Archives: Uncategorized

Grisbot Scratch Interface for Free-Form Mode

The idea behind free-form mode is that a user can design her own path, say on a sheet of paper, and then program the robot accordingly. Consequently, the programming page simply shows the waypoint icons lined up in rows and … Continue reading

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Grisbot Scratch Interface for Udrive

Here is the graphical user interface for U-drive (not U-turn as I said yesterday). To put the robot in U-drive mode, click on the U icon, and then go directly to the communications page. Do not bother with the scales … Continue reading

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Grisbot: U-Turn Mode

The idea is to once again program the robot by holding it up to the computer screen — but this time by analog rather than digital communications. (I call this U-Turn Mode because of the U on the screen, but … Continue reading

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Engineer Zero and the Lost Temple of Consumerism

A local mall had a flood a few years ago, and has never quite recovered. There’s a lot of empty space, which for me evokes a certain atmosphere of mystery and even a little adventure. Come, let us depart from … Continue reading

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LEDs and Resistors: A Cautionary Tale

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Grisbot Udrive

I’ve been encountering problems with implementing a hand-wave programming mode for grisbot, but along the way I came up with the following idea: how about a mode where the user holds the robot up to the screen and programs the … Continue reading

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Left and Right Blink Proximity Demo

Moore’s Law has been trumped, in that I have doubled the resolution of blink proximity in a single week. So what, you ask? Well, it means that the robot can now turn toward or away from obstacles. Or, even more … Continue reading

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If I had a 3D printer (Part 2) . . .

. . . I could make stuff like this: Give up? It’s a camera cradle, for taking photos and video from an elevated angle without having to buy and break out a tripod: Of course, you have to elevate it … Continue reading

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Solving Logic Puzzles With Sketchup

Perhaps you’re familiar with those logic puzzles where five people live next to each other and have different traits, and you’re given seemingly unrelated clues and asked to figure who has what. You know, logic puzzles like this one: Well, … Continue reading

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Blink proximity detection

This detector works by flashing an LED and comparing photocell readings with LED off and on to subtract ambient light and determine if there is an object in front of the robot which the LED light is reflecting from. Since … Continue reading

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