There's lots I don't know if, and if I've heard about them I've not understood lol. So curious who will reply.

There's also these posts from OpenSats which might have some cool stuff in them. But I reckon there's lots off the grant radar.

I think there's also people working on nostr+Meshtastic which is p cool, imo lol:)
#meshtastic

nostr:nevent1qqsfq6svtystt8jh2ngd75tyhl4z4r2geewh8042r6z5k0n8yh3j3zspzemhxue69uhkummnw3ezuerpw3sju6rpw4ej7q3q0pensatlcfwktnvjjw2dtem38n6rvw8g6fv73h84cuacxn4c28eqxpqqqqqqz0pnlm7