Tag Archives: grisbot

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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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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Flicker Object Detection

Can a small robot detect objects by flicking a light on and off? If so, then all I need to do in order to add object detection capability is add a small lamp to my robot at a cost of … Continue reading

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A lamp for Grisbot

If Grisbot is to detect nearby objects by flashing a light on and off, it will need to carry its own lamp. So I went to Radio Shack and bought a few candidates. (NOTE: The packages shown on the right … Continue reading

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Object detection by photocell

A photocell is a poor substitute for a camera, but it’s a lot cheaper too. So the question for grisbot is whether a photocell is sufficient to detect an object nearby. Here’s one possible solution. Suppose an object — say, … Continue reading

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Rewiring to streamline reprogramming

Each time I re-program Grisbot, I have to move the ATMega328 microcontroller chip from the robot to the Arduino platform and then back again. It was difficult to pry the chip on and off the breadboard each time because several … Continue reading

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Grisbot in Solidoodle

The Solidoodle 3D printer is selling for only $499, which means that it is within my budget. So that got me to thinking that maybe I should abandon laser cutting in acrylic and instead go with 3D printing in ABS … Continue reading

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Informal Testing of Potential Ideas

Tonight I tested out a couple ideas for where to go next with Grisbot. On the right, I was working with the good old photocell testbed, which I connected to Arduino analog input A0 and measured the light reflected off … Continue reading

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Grisbot Light Above Two Demo

Here is a demo video of grisbot performing in ‘Light Above Two’ Mode. This could be the basis of a game, in which the object is to steer the robot as close to a marker as possible within a limited … Continue reading

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Light Above 2 User Interface

This is the Scratch-programmed user interface for the second mode for grisbot to obey commands from a flashlight shined from above. When a flashlight is shined on the robot with an intensity greater than user-selected value (a), the robot turns: … Continue reading

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