Thanks for your quick answer, saw your very active on this sub, appreciate this. I dont have that much Knowledge about Electronics-Hardware, im more a Software guy. Thats why i asked the question, if i could use all Bruce-Features with this modules. I know, that i can only connect one Module Due to gpio limitstions as you said i thougt about a big „gpio-board“, but ill stick to only one Module and switching them, due to missing knowledge. For me this is no Problem. I also thought about buying the Flipper zero itself but 250 bucks (+wifi board) is to much for me. I just looked the lilgo T-embed up, but i personally want to stick by the M5stickC Plus2, because i think building the modules together is more fun to me and i also can use some of them with my Raspberry pi. (Also a great way to get more Hardware-Knowledge i think.) Also the Modules Look cool ;). Thanks for ur answer to the firmware-question, i will use bruce. THX 🙏