[GreenKeys] Printer won't align model 15

[hwhall@aol.com]

That's not a speed adjuster on the side. It adjusts when the machine samples the magnet for a "bit". Sometimes, by adjusting it way off, it's possible to compensate for a slight speed difference, but that is not its intended operation.

Are you sending the Keyboard typing through the solidstate relay? Or is it only interfacing with the Arduino? Is it possible the Arduino is not changing the bits & sending the bits fast enough, even though they are of the right time duration? If you have a scope, it may reveal something by looking at a RY bit stream.


Wayne
WB4OGM

On Sunday, September 21, 2025 at 04:14:06 PM MDT, Windows XD <antech6586856 at gmail.com> wrote: 

Dear all,

My printer won't seem to align itself to the datastream it is being sent no matter how I adjust the speed adjuster on the side, what do you recommend I do to trouble shoot it? It prints perfectly fine when it is printing to itself. I currently have it hooked to an Arduino which is sending out RYRYRY in Baudot. To eliminate the question of is it the code, it is currently has a 22 second start delay, 22 second delay per bit, and a 31 second ending delay. That is currently being run through a solid state relay capable of switching at that speed. I know it can do this since it works with the keyboard when moving locally. Furthermore, the letters it prints are always the same depending on the speed setting, (although wrong) so it's not like there's a mechanical issue. 

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