Checkout the Femtofox, it's a Luckfox pico running full Linux with a 1W LoRa module, and it happens to have the Ethernet port built in. Really neat bit of open source kit.
cairn
Thanks for sharing! It sounds like you're getting good results with the filter regardless, but I'd be interested to see the numbers whenever you have a chance to measure again. I've been wanting to try something like this myself, but there are so many bad reviews for different BPFs out there, it's hard to know which vendors to trust.
Did you roll your own BPF, or purchase it? If the latter which one did you get?
I think the terms you're looking for are "choc spacing" and "MX spacing". Choc spacing is what the Piantor uses where the space for each key is 18 x 17 millimeters. MX spacing is 19 x 19 millimeters.
If you want to keep using low-profile switches, there are a handful of boards that either choc or MX switches, and any of those will always use MX spacing. That said, I don't think there are a lot of pre-built options in this space.
Maybe check out Klor. I think that one is offered as a pre-built by beekeeb and it uses MX switches. It's got the more aggressive pinky stagger, but it also has some splay which may or may not be your thing. I just finished building one using tecsee "medium" switches and MTNU keycaps, do it's lower profile, but still not as low as choc.
Same vein, different vibe: Nazi by Chumbawamba