Tag Archives: robotics

Grisbot goes into the light

At the Big-Brained Superheroes Club.

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Batteries: A Cautionary Tale

On Saturday, I took grisbot to the Seattle Robotics Society meeting and showed a demo video of the light-follow mode. After the main presentation, I got out grissy and tried to set up a real-time demo in case someone wanted … Continue reading

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Grisbot Light Follow Screen

In addition to the obstacle challenges, I’ve added a control screen to the GRIS program for light-follow mode. To get there, you click on the little flashlight icon at the top of the screen. In case my artistic abilities aren’t … Continue reading

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Grisbot Light Follow Test #1

A little different from what I had in mind, but interesting: 1. When there’s low light, robot pauses two seconds, then spins. 2. When there’s high light, robot follows the light. Only the left photocell is being used here. I’ve … Continue reading

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Light Follow Test Rig

With this test rig, I plan to write a sketch for grisbot that will cause the robot to follow a flashlight beam. There will be two states, Triggered and Non-triggered. The transition to from N to T occurs at a … Continue reading

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Grisbot Hoop Capture Test

I’ve got a bad feeling about this. Before we begin, some brief technical details: The orange pipe cleaner provides friction to compensate for servo swerve. *** The catcher is just a piece of wire. Nobody likes overengineering. *** More equipment … Continue reading

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Variations on a brushbot

In my continuing efforts to find a simple product to market, I thought, “Why don’t I make some upgrade mods to the conventional brushbot?” So I ordered a brushbot kit from Maker Shed, and modified as shown. The long green … Continue reading

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Weighing Robotics

Some weights that are interesting to know. Display has one decimal place, so that 442 = 44.2. The display does have a decimal point, but it doesn’t show at the angle of the photos. Sorry. This is an Uno R3. … Continue reading

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Grisbot with Arduino

Here is a preliminary design of a dual tray assembly that can carry both an Arduino and a mini bread board: Here’s an underview, showing how it all fits onto the robot body: As is, the tray assembly can’t be … Continue reading

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Micro Servo Gear Pry Tool

In the process of converting a micro servo to continuous rotation, it is necessary to open the housing and pry the gears off the servo base one at a time. However, my fingers are just too big and clumsy to … Continue reading

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