Full write-up here: https://bit.ly/2JIhlwn
I decided to venture into adding a 3.5″ TFT to my LulzBot Mini. I already have OctoPrint running via all my mobile devices, but there are times (usually during filament failure events) I need to directly control the printer (heat the filament, move axis motors etc). After 3 painful days of messing around withe different tutorials, I found failure. Well, I finally figured it out and it works dammit! I haven’t found a single source that has all steps in one place, so I decided to do a mashup of instructions based on my experience. There are others that deserve credit here – I simply brought together the steps for this specific TFT.
As most would have done, I started with the easy route trying to get it working. In this case, I attempted the Adafruit tutorial – no go. I also tried other methods using the LCD-show driver and others. After hours of tinkering, entering commands it was still a fail. I almost got there, except the X/Y axis were flipped and it had calibration issues. One of other problems was the amount of software updates these other approaches called for. I wanted a vanilla OctoPrint setup that started with a clean install and added the TFT from there with limited extra fluff. Click the link above for full detail and steps.
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