LOL ! Indeed, the soldering iron is never far away ! I do use solderless breadboards too but this test rig is traveling a lot between my personal lab and my work place, so I need it to be reliable.
Code wise, Spectrum layer one is coded, it needs an improved color selection, I'm doing this today. I've added a few other parameters as well and some visual scenarios to the Tangible Font Selection / blade detection.
What's left do to do at the present day are mostly the accu bolt system and the combo system. Those are mostly code to bring back / copy+paste, so it's nothing "complicated".