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Pinecil is one of the few things I'm kind of Meh on the Bluetooth part, once they added USB-PD and safety auto shutoff, it seems like there's not much to add that wouldn't cost money or size. I wouldn't mind a wireless logic analyzer, if it had good battery life. Being able to use it on a tablet easily while charging without dongles so you had a second screen could be cool. For a game controller adapter, I'd definitely prefer Bluetooth, because the performance is good enough for a casual gamer and it's pretty convenient. It doesn't necessarily even have to involve batteries, BLE is still useful with wired power, if your device doesn't have a lot of ports and you've got more spare chargers than spare hubs. Android should have supported mDNS like, 10 years ago, but slowly we are getting to a saner place. Network programming definitely is 10x harder than non-network programming. It absolutely will screw up and ruin your day if you don't assume all packets can be lost, all connections can be dropped, IP addresses can change, MACs can change, there can be 500ms of latency for no reason, you can get requests from multiple devices, connections can be closed uncleanly, devices can show up in any order, other devices can mysteriously forget connection info, IP conflicts absolutely will happen if you have manual static IPs and aren't really careful, there will be random code in frameworks to hammer flash memory caching credentials on every boot in Arduino, etc. But hey, it's still easier than soldering and 0603! A lot of problems for anything remotely hobby level can be solved with heavy handed locks though. Like, don't touch the filesystem except under a lock, and use the same lock for everything, and hold the lock for the whole HTTP request, and only try to get more clever in specific places that need it. It might really suck and be slow, but at least it might be correct. Network is a lot of hassle but it's also a lot of potential. Especially for configuration and debugging where it's ok if it's not 100% reliable, and for things that inherently tolerate a bit of loss, like telemetry. |