The HC-1W program comes with a couple of test bitmaps as can be seen in attached video.
Biggest issue with using the HC-1W is you need to run the corresponding software to set up for different types of panels (though this is applicable to all LED Panel Controllers). Once you get the hang of it, you can create and save the configurations for all the different types of panels you have, then just upload as required. The test program will run on any configuration, though you may need to change panel size as applicable. Or just make a program for each panel type.
Biggest issue with using the HC-1W is you need to run the corresponding software to set up for different types of panels (though this is applicable to all LED Panel Controllers). Once you get the hang of it, you can create and save the configurations for all the different types of panels you have, then just upload as required. The test program will run on any configuration, though you may need to change panel size as applicable. Or just make a program for each panel type.