08/24/2017 at 17:29 •
I worked out all the details for making a 1.5x width enclosure (63mm), compared to the standard 42mm width. The DIN-Uino baseplate is the same, only the cover and side-plates change. See below:
This 63mm wide enclosure should have enough volume to contain most anything you would need to implement, though I know some application will come up that desperately needs a 64mm wide box! Murphy!
I worked out all the enclosure details so that the base-plate can be fully enclosed. Due to the potential for connectors poking out from 3 sides, I've designed the worst-case 4-piece enclosure:
Of course, if you have no connectors coming out the top or bottom sides, then those sides CAN become flaps attached to the cover. Less parts, less screws, less cost!
Note that when this cover design (as shown) is attached, the module thickness remains at the standard 42mm. Everything must fit inside that envelope. However, if you have a configuration of Arduino modules and other internal hardware that makes a taller cover necessary - no problem. It can be easily accommodated (within reason) by making just the cover taller. You still have a 42mm-wide DIN-rail clip, so watch out for cantilevered-load issues. The mounting foot should help enough, in most cases.
In my experience, many, but not all, industrial applications require a fully-enclosed module (mainly to keep out curious fingers, and for safety too). Customers buying $100K equipment upgrades often have a strong preference for neatness too.
Generally, if I'm packaging my system into a standalone "box" (think suitcase-sized), then open-frame modules are usually acceptable. In these cases I would only use the DIN-Uino baseplate.
DIN-Uino Proto1 board has been designed and sent off to "easyeda.com"!
This was designed as a 4-layer board, mainly because it eliminates the need to have fat +V/GND tracks all over the PCB eating up space for holes. It also really not much more expensive than a 2-layer board.
Metal: I've had the DIN-Uino mounting plate quoted at a very competitive local shop. Haven't pulled the trigger yet - but everything is in place.
DIN-clip: This is a standard Hammond-Mfg product. A spring-loaded metal clip for DIN-rail mounting. One feature I really like is that you don't need a tool or anything at all to un-clip from the DIN-rail. So far, all the plastic DIN-rail clips I've found really need a screwdriver to un-latch them, and with the size/shape of my enclosure, there's no way for any tool-access to that clip.