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vre wrote:

How you will implement this because
raster engraving with mesa not supported to linuxcnc.

That is not correct, i use LinuxCNC with and without Mesa for engraving and it works perfectly.
forum.linuxcnc.org/show-your-stuff/46752...ver-etcher-scratcher
Configs should be attached there, and yes, it is the same thing as laser, it uses PWM for pressure control.

Hi, 

after a few month working with my bread board set up, I am continuing to build up a PCB board. The pin connection is currently all over the place, but it works... I am cleaning that up and have a quick question about the Tang Nano 9k. I am palling to use Bank 1 and 2(3.3V) for the input and outputs. I don't need to use Bank 3 (1.8V) as my machine is not that complicated. 

Are all Pins from Bank 1 and 2 usable as Inputs and Outputs or are there special pins which need to be high or low at boot?? Similar to some Microcontroller?

Do you want galvo for engraving?
How you will implement this because
raster engraving with mesa not supported to linuxcnc.

Just one more thought...

Is it necessary that the write command has pins? Does this data change real-time?
There are several side-effects to this being pins that can change. For example, the documentation lets on that it needs to be written as *one* modbus transaction. (that would mean I first need to fix the bug)

These parameters look like initialization values you set once and leave the same. If that is the case, you can simply make it a single command writing the necessary registers in the <initlist> in one command writing the 5 registers with static data/values in one transaction.