It took some digging into the Internet, but not too deep really. I didn’t dig too far, not looking for extra organs or hot PPE. The problem was that the print for the X axis stopped at 95% completion and then jumped to 100% complete. I had to plug in the symptoms a few times to get past the COVID-19 stuff and articles, but finally found the answer. It seems that the electronics got too hot from running the extruder motor and therefore shut down before any damage happened to the board.
So the plan now is to load the Purple PLA+ from GST3D.com filament on the older Ender 3(it is just a few months older and less updated hardware/firmware), and knock the infill down to 60% just to be safe. The goal now is to get the project done, because I have bot parts that need to be made. YAY!
Pics or it didn’t happen!
Yes, I have a crappy camera and take sub par pics, but decent equipment costs money. So buy me some Ko-Fi if you would like better quality pics.
By the end of the week, there should be a complete pair of tracks ready to mount on a chassis. The chassis is still in the design phase, though. It has to hold the dual gear motor assembly, and six 18650 batteries in appropriate compartments, eventually a triple axis accelerometer, a set of charging studs and be resilient enough to take moderate knocks without breaking, not to mention the amount of wires going to and fro to the micro controllers, dual H bridge, motors, etc.,. A lot of thought is going into this part, because the decisions made now will affect the the design of the rest of the body and it’s capabilities. Something tells me that I am either going to go through a lot of electrical tape or heat shrink(which I’m sure it’s not the size that I have). The good news is that it will all fit, and that there will be no laws of physics or even bent to get it all in there(fingers crossed, cuz the fine for trying to break the laws of physics is failure). Time just has to be set aside to finish the designs and the last unopened spool of orange PLA loaded onto the Creality Ender 3, so that the idea of the chassis is made physical.
So there is a completely finished track, pic below:
2nd Level Robot, or Taking It to the Next Level
I was looking at the specifications of the ultrasonic range sensors in the SR-04 family, and yes they wide cone that can detect an object at a good range, it initially seemed to create some issues. I was thinking of making the bot body taller so that it wouldn’t be creating false triggers, and thought of putting the receiver module part of it in a tube so that it wouldn’t receive pings of the bot body and a few other off the wall ideas that probably wouldn’t work, anyways. So the final solution that got the go ahead to be designed for was…..wait…..dun dun dunn!….Put two sonar modules and get the twice the data to sort!! What does this solve? A lot really, if you mount at 90 degrees apart of each other then they will be closer to the outer perimeter of the bot body, which means it can be shorter, the servo doesn’t have to make a full sweep for the sensors to get enough data for the micro controller to form a map for the main micro controller to decide how to proceed and if the robot is following the plotted course.