Device features:
- galvanically isolated USB port
- no external power supply required, isolated power available from USB port
- intelligent device driver, protection of mechanical components (automatic single setepping with adjustable timimg)
Communication:
- 57600 bits/second data rate
- every byte received will be sent back (except spaces in the query comand, see below)
even if it does not belong to any command
- commands are case sensitive
- 'r' will be sent to the host if a stepping is ready
(for commands sx,sy,ix,iy)
Commands:
sx<hi><lo> : set x position
sy<hi><lo> : set y position
ix<hi><lo> : increment x position
iy<hi><lo> : increment y position
qx<space><space> : query x position, <space> won't be sent back, <hi><lo> instead
qy<space><space> : query y position, <space> won't be sent back, <hi><lo> instead
w<millisec> : wait time after a step