rasberry pi’s and working methods like umbrel aren’t full nodes.
they’re {hardware} and working methods. that is it.
a full node is the Bitcoin implementation software program. it may be put in and run on any working system and most {hardware}. however ideally you examine the signatures and binaries of this file earlier than hand. extra on this defined by btcsessions: https://youtu.be/U0I-ImS_r8o
you possibly can obtain bitcoin full node software program without spending a dime from bitcoincore.org
you do not want new or customized {hardware} to run a Bitcoin full node.
all you want is 500GB of free house for the preliminary sync. you possibly can then prune the node again to 6GB if you happen to so want.
folks must cease losing their cash on these merchandise moonlighting as Bitcoin full nodes. they don’t seem to be. they host them, however they don’t seem to be them.