piddlerintheroot

Looks like the request is malformed. I wrote the script a while ago, so most likely the UPC_lookup function is deprecated as it was written for the old API. https://www.upcdatabase.com/xmlrpc.asp provides documentation for the new API.

https://learn.adafruit.com/reading-a-analog-in-and-controlling-audio-volume-with-the-raspberry-pi/connecting-the-cobbler-to-a-mcp3008

What version RPI are you running it on? Are you running it in sudo? Try running the updated the code.

Those motors should work. I'm not sure about what your requirements are. You can control up to 4 motors independently with L298N. I think you could either double up and have 3 motors per side, and live with 2 motors functioning in the same manner or alternatively use 2 L298Ns if you needed to control each of 6 motors individually.

Hey Danny,I haven't looked too deeply into it yet, but I would use a SLAM algorithm for use on a robot.Here are some links I found which explain it in further detail: http://home.wlu.edu/~levys/students/BreezySLAM_Sur...https://github.com/simondlevy/BreezySLAM