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Tag Archives: gris
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
Dual Sensor Mode in Processing
Here is GRIS in Processing, revised to accommodate dual sensor mode communications between the computer and robot. The square on the left flashes data, while the square on the right flashes the clock signal. Each data bit lasts two frames. … Continue reading
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Tagged gris, processing, robotics, sensor, serial communications
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Dual Sensor Communications Protocol
Photoresistors are cheap, and the ATMega328 chip has spare analog pins, so why not use a dual sensor configuration for the GRISbot communications protocol? Here’s what the sensor cowling looks like with two photoresistors (aka LDRs) inside: Likewise the screen … Continue reading
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Tagged atmega328, communications, data protocol, gris, processing, robotics
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Protocol Layers for GRIS Communications
Years ago, I tried to read a book on telecommunications protocols. I didn’t get very far before learning that there were such things as ‘protocol layers’ that made the subject a lot more complex than simply translating voltages (or light … Continue reading
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Tagged communication protocols, data protocols, gris, robotics
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GRIS bot photos
Here she is, the integrated prototype. Note the cowling is fastened on the back and that the breadboard has just the ATMega328, not the whole entire Arduino board. An overhead view showing the arrangement of the servos, wheels, breadboard, and … Continue reading
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Tagged arduino, atmega328, gris, LDR, photoresistor, photos, robot, robotics, servo
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GRIS bot circuit diagram
I’ve been working on this thing for months now, and it seems rather odd that only today did I think to make a circuit diagram. I think this is correct. I’ll get around to posting a photo soon too and … Continue reading
