Hi @FOSV, I have no experience in electronics assembly, but I see that JCLPCB offer assembly of PCBs. However they don’t seem to stock all the relevant parts. In particular there is no MCP2025 – but there is a TLIN1028. Would you be interested building an updated model that uses parts JCLPCB stock? 
Does anyone know if this code is compatible when directly using the UART interface that the wifi dongle (anywAIRⓇ technology Wi-Fi adaptor II | Fujitsu General) would normally plug into?
I’m interested in buying 5 with or without the Atoms when you have them available.
I suspect there is enough demand that it would make sense to have a batch made - but your hand made version is good with me if you have them to sell.
Thanks,
-Ken