I am looking to change from GCode Sender to GRBLPanel. this is mainly because I like the way everything is shown on one page. However I don't understand how to send manual GCode commands. The MDI Manual command box seems to be the right place and if I send a normal GCode command (e.g. M3 or G28) it works OK However I cannot send $ commands. $$ does nothing. I also want to set a $N setting but it doesn't work. I had no problems doing this with GCode Sender What am I doing wrong?