That's odd. If you can login (ssh) to your stellarmate. indi_rpicam should be located in the directory /usr/bin
pi@skycam:~ $ ls -al /usr/bin/indi_rpicam
-rwxr-xr-x 1 root root 943740 Dec 13 14:47 /usr/bin/indi_rpicam

If there is nothing there then maybe stellarmate doesn't have it.
I attach a zip file with the diver I compiled.

First check what stellarmate os is because I have no idea. Login to stelllarmate and use cat and arch as follows:
pi@skycam:~ $ cat /etc/os-release
PRETTY_NAME="Raspbian GNU/Linux 10 (buster)"
NAME="Raspbian GNU/Linux"

pi@skycam:~ $ arch
armv7l

If it says something similar (buster and armv7l) then you are probably ok.

You need to copy the zip file to stellarmate (scp from linux or (putty) pscp from windows)
Linux:
scp indi_rpicam.zip This email address is being protected from spambots. You need JavaScript enabled to view it.: indi_rpicam.zip
Windows
pscp indi_rpicam.zip This email address is being protected from spambots. You need JavaScript enabled to view it.: indi_rpicam.zip
Or failing that take the sd card out and copy the file over and re-insert it (remembering where you copied it to)

On stellarmate you need to be in the / directory

cd /
sudo unzip [path to where file is located]/indi_rpicam.zip

This should install it in /usr/bin.
Of course this may not work either since my version of pi os may differ . I dont have stellarmate so sorry.

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