@AWI Lemme think about that..... Uuuuuhm. no... 😈
I have no plans for a meetup. Lacking a proper venue for such a thing. Unfortunately.
There are also some online calculators. But beware, there are two different ways to calculate, depending on whether there is a ground plane underneath or not.
I have tried to implement it, but the gaps are very small and I'm not sure how to use it properly in KiCAD.
These are the calculators:
My previous PCB's have been made without these calculations and work admirably (but not very efficient probably...).
Can I make a suggestion? Reverse the placement of the nuts to the top part, and the little machine screws to the bottom part of the housing. That way it will be easier to keep the water out as it will not creep in to the gap between the ABS and the screw. That capillary action will also work upside down, but good old gravity counters that to a great degree.
@Koresh Thanks for the explanation.
I've been searching for a power solution for my nodes. And that's quite the task.... For now I'm working with the HLK, but that's a tight squeeze. And when I want to make a dimmer, I could use a zero cross circuit. I've been looking into Vigortronix, who have a supply similar to the HLK, but with an extra pulse output for the zero-X. Too bad they are WIDE. They won't leave any proper room for a relay or connection terminal.
I'll take a look at your link and see if I can make that work in my case, and may come back to you for some magnetics.
If I recall correctly, the RFM is capable of a "listen mode" where the power requirements are very low, and the MCU is in sleep mode. When a message arrives, the RFM can wake the MCU with an interrupt DIO0 to process it further.
For now, the MySensors library does not support this listen mode yet, but I know it is in the works for a future release.
@ferro I've looked into thos Vigortonix devices. Those are nice! Unfortunately they're bigger than the HLK's.
But for the dimmer designers under us: they have miniature power supplies with built-in zero cross detectors! Looks very interesting!
If the message says: TSP FAIL there is no communication between your Arduino and the RFM, you need to check your wires, which is strange as you have success with that other lib. Have you commented the right
#defines before the
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