This is what I recently created to enclose newbie PCB with two AA batteries.
https://www.thingiverse.com/thing:3228067
Best posts made by Michał Kozak
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Newbie PCB (not only) housing in different sizesposted in Enclosures / 3D Printing
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RE: Need help to understand basic communication API: send, receive, ACKposted in General Discussion
@mfalkvidd that's helped me a lot to better understand what is happening during send! Thanks!
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RE: sendBatteryLevel is not published to MQTTposted in Bug Reports
I'm still investigating my problem
I checked logs from gateway and I can't see received messages with battery level, so looks like message is not reaching a gateway at all.
Situation improved a bit when I started using sendBatteryLevel with ACK, but it is still not perfect :).
I suspect that because sendBatteryLevel is a first message send after arduino wakes up maybe it could be that transport layer is not initilized yet? Maybe I should wait few sec after wake up before I start sending messages? What do you think?