As luck would have it, once I had my 1500×1500 CNC router fully assembled and tested properly, Hurricane Iselle comes into the islands and sets my progress back by a few weeks. Not only did I need to disassemble the frame and put both the frame and gantry into a safe place during the storm, and then reassemble the whole works a week later, but darn it, one of the TinyG controller board’s chips decided to crap out, too! That’s a bummer, especially since those driver chips are soldered directly to the main board.
The TinyG v6 is no cheap Chinese knock-off 3D printer board with expendable daughter boards, this is an all-in-one unit requiring surface-mount repair tools to get the job done.
I should’ve looked into the next-generation driver chips that the TinyG v7 and later use, and see if those chips are pin-compatible with the chips used in these earlier models. Chances are good I’ll be keeping this machine around for a long time, so it may have been a good time to just upgrade all of the driver chips while I had my soldering equipment out. Oh well. Below are photos of the actual repair, done using a hot air workstation set at 280 Celsius, on a fairly low airflow setting.
Now that this distraction is complete, and my frame is reassembled once more, it’s time to remount the little Dremel Clone onto this CNC and start working on some of the smaller pieces I need to have made. In another month or so, I’ll double the length of the frame (to make the machine a 1500x3000mm beast), and I’ll be adding a beefier router at that time to cut entire sheets of plywood. Finally.