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Category Archives: Uncategorized
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
Posted in Uncategorized
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
Using a digital photo frame as a linear clock
A reader writes: I have two mentally disabled daughters who are severely OCD. They can’t wait for anything. I’ve been looking for a simple linear clock showing 24 hours (or at least 16). I would put pictures of them waking … Continue reading
GRIS Calibration Flow Chart
I spent an hour working on this chart tonight. It shows the calibration procedure program flow. I don’t expect anyone to follow it, this is basically for my own edification when I (attempt to) write the code tomorrow. I sure … Continue reading
GRIS Light Calibration
For some time now, the biggest roadblock to implementing my robot has been with screen communications. Now and then the path data transfer procedure works perfectly, other times it doesn’t work at all. I suspect it has something to do … Continue reading
Mintduino Blink Test
Finished assembling Mintduino. The ATMEGA328 chip not only has the Arduino bootloader, it also has the LED blink sketch pre-installed, so when the battery was attached to the Mintduino, the Green LED started to blink. Tomorrow: attaching the FTDI cable … Continue reading
Assembling a Mintduino
I’ve been assembling a Mintduino, which is a breadboard version of an Arduino. The above photo shows me about midway through the process. The Mintduino case is a mint tin, hence the name. The case holds the electronic components shown … Continue reading
LDR Cowling
This shows the gradual evolution of cowling solutions for the LDR. The presence of ambient light raises not only the zero level but also the break level between 0 and 1, so it’s been a headache to adjust the arduino … Continue reading
GIRC Robot Preliminary External Design
I’m still attempting to integrate the servo command sketch with the flash communication sketch, but I figure it’s time to start thinking about the external design of the robot. I plan to use a laser cutter on thin wood, with … Continue reading
