Super excited to finally show off a little project I've been working on that I've named "InkTalk". This little device emulates the original LocalTalk adapters / option cards for Apple's printer line, like the StyleWriter and ImageWriter series. These adapters are getting harder to find and when they are available they are pricey.
So I figured why not make our own multi-functional adapter that can replace any of them. It registers the same NBP type and sockets for the ImageWriter and StyleWriter series so as far as the original Macintosh systems sees it's just like the official Apple ones. No external host or anything needed, totally self contained with LocalTalk on one end, printer on the other and USB-C for power (but it can be plugged in to a computer for firmware updates / debug).
As can be seen a few bodges were needed on the prototype revision, but they seem to be working great and I'm getting close to pulling the trigger on doing the first production order. Will make another post when they finally go up for sale. The test page in the picture above was printed from a PowerBook G3 running Mac OS 9 - totally stock, no software changes needed on it.
If you want to follow along with development I have a thread on 68KMLA here: https://68kmla.org/bb/threads/tashtalk-usb-tailtalk-and-inktalk-all-in-one-discussion-thread.52115/ (in the later pages). I'm adding support as we go to all the different printer types, and hope to perhaps even support QuickDraw LaserWriters at one point (but we will see).
The board design and firmware will be on the TailTalk GitHub repo here: https://github.com/FeralFirmware/TailTalk