Newbie interested in building a Satnogs Rotator -- with wayy too many questions :)

okay I’ve gotten a bit further I think? … maybe you can send commands direclty from PC to arduino? I feel kinda lost but like I’m making progress. Need to wait for my stepper motors and drivers to show up tomorrow I think… I may add some serial outputs to the arduino code so that I can monitor it and debug though.

I 've installed hamlib and I run * cmd /k “rotctld -m 202 -r COM3 -s 9600 -T 127.0.0.1 -t 4533 -C timeout=500 -C retry=0 -vvvvvvvv”

… I can see the RX light blinking on the arduino when I click ‘engage’ in Gpredict…?
I see this in the CMD window

C:\Program Files (x86)\hamlib-w64-3.2\bin>rotctld -m 202 -r COM3 -s 9600 -T 127.0.0.1 -t 4533 -C timeout=500 -C retry=0 -vvvvvvvv
rotctld, Hamlib 3.2
Report bugs to <hamlib-developer@lists.sourceforge.net>

rot_init called
initrots3_easycomm called
rot_register (201)
rot_register (202)
rot_register (204)
rot_token_lookup called
rot_confparam_lookup called
rot_set_conf called
rot_confparam_lookup called
rot_set_conf: timeout='500'
frontrot_set_conf called
rot_token_lookup called
rot_confparam_lookup called
rot_set_conf called
rot_confparam_lookup called
rot_set_conf: retry='0'
frontrot_set_conf called
rot_open called
serial_open called
serial_setup called
Opened rot model 202, 'EasycommII'
rig_strstatus called
Backend version: 0.4, Status: Beta
Connection opened from lmlicenses:38503
rotctl(d): p '' '' '' ''
rot_get_position called
easycomm_rot_get_position called
easycomm_transaction called: AZ EL

serial_flush called
write_block called
write_block(): TX 7 bytes
0000    41 5a 20 45 4c 20 0a                                AZ EL .
read_string called
read_string(): Timed out 0.649267 seconds after 0 chars
easycomm_transaction read_string failed with status -5
easycomm_rot_get_position got error: -5
rotctl(d): p '' '' '' ''
rot_get_position called
easycomm_rot_get_position called
easycomm_transaction called: AZ EL

then it repeats at the moment. nothing is hooked upto the arduino right now though