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Category Archives: Uncategorized
More surgery on a servo
No, it didn’t crash. I had to disassemble mini grisbot in order to perform surgery on the right servo, whose centering had drifted so much that the wheel could not turn forward. To keep the potentiometer shaft from twisting (thereby … Continue reading
Mini Grisbot in action
Preliminary test of my robot.
Mini grisbot test status
I have completed screen-to-photocell calibration and control code transfer. Mini grisbot passes both with flying (or at least hopping and skipping) colors. The remaining test phase is to calibrate the servo timings to execute the path as shown on the … Continue reading
2013: Year of the Raspberry Robot
My interest in the Raspberry Pi concerns its use as robot brains. I made the above chart to help me better understand where the Raspberry Robotics development process is heading. I’ll need an IDE on my laptop/desktop which can transfer … Continue reading
Robot Sentry Duty
Obviously, there’s going to be course error buildup. I don’t think encoders would help that much. I’m thinking of navigation beacons, like so: (Maybe infrared? Hmm . . . . )
Naked ATMega circuit layout
This is related to the previous entry and shows the circuit diagram and breadboard layout for an ATMega removed from the Arduino prototyping platform after being programmed. The wiring layout on the right isn’t mandatory, of course, but it does … Continue reading
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The Naked ATMega
Why take the ATMega328 chip off its happy home on the Arduino to sit naked on a breadboard? Because Arduinos cost $22 while the ATMega328 with Arduino bootloader runs about $1-2 plus a dollar for the support components and a … Continue reading
Surgery on a servo
Servo drift occurs when the potentiometer shaft (the one on the left in the photo) turns from the centered position (ie 90 degrees). I tried to prevent servo drift by soldering the pot shaft in place, but apparently all I … Continue reading
Servo Center Location Test
It looks like the climactic scene in a monster movie, Arduino vs. Bot. In reality, this setup enables me to keep the ATMega328 chip on the Arduino while I upload test programs to locate the servo centers. According to the … Continue reading
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Tagged arduino, atmega328, micro servo, minigris, robotics, servo
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Minigris test matrix demo
This demo shows that the mini grisbot (graphical robotic information system) test matrix has been successfully completed, with photocells and servos functioning and integrated. (And special thanks to Adafruit for the link yesterday.)
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Tagged arduino, atmega328, mini grisbot, robotics, test matrix
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Engineer Zero 