Just received my FriendlyARM R2s with metal case today. The hardware makes a good first impression (for comparison, an old 32bit OrangePi zero, it's the one with the wifi antenna).
There's no official config for it u-boot yet, so I tried Armbian with kernel 5.4 which works fine so far. The machine draws around 0.3A at 5V in idle with WAN port connected - not that bad if you ask me.
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