On 4/14/25 07:47, Mike Katz via cctalk wrote: > I have a couple of Sanyo Denki units that I can do the same for. I was > hoping for a serial/USB option that would handle fan fold in stead of > rolled paper tape.
I threw together my USB interface for the Sanyo Denki in an afternoon, using the lowest of the STM32F103 MCU "Blue pills" - the C6. Useless for many blue pill projects, but adequate to hold USB comm support and the simple logic to control the paper tape reader. Why the STM32F103? I had a bunch of the things wasting space and they feature 5V tolerant I/O and a sufficient number of GPIOs to interface to the parallel reader output. There was plenty of flash program memory left unused so that other features could be added if desired. I suspect almost all CNC-oriented tape readers have a similar interface to that of the Sanyo. Really, if you're talking about it and not doing it, you're squandering time that you could spend implementing it. --Chuck
