The ﬁrst lesson would be the eﬀectiveness of commercial hardware, customized with some fabrication and elbow grease. Our monitor design, based on a consumer product, was signiﬁcantly cheaper than solutions by digital signage / monitor vendors that oﬀer display design andmanufacturing services. Frankly, had we opted to use an outside vendor for the construction of custom monitors, the Reality Deck would not have achieved its current scale.
Secondly, builders should not assume that commercial, off the shelf, hardware always works as intended, particularly when pushed to the limit. We mentioned earlier the issues we encountered with passive DisplayPort extender cables. By assuming that these products ”just worked” with our cluster/monitor conﬁguration, we encountered an unpleasant surprise relatively late in our construction process and had to reevaluate our design. On a similar note, consistency in performance is not a necessary condition for mass-produced hardware. Out of the approximately 440 monitors we ordered from our vendor, roughly 100 had to be exchanged due to brightness inconsistencies and other issues.
we would strongly urge future builders of large-format displays to prototype as much and as accurately as possible. The basic building block of such a system is a single node of the rendering cluster, along all connected displays. We suggest that prototyping be carried out using the exact PC, display and connectivity conﬁguration that would be used in the ﬁnal system. Quite frequently, this process can be carried out for free (if we ignore labor costs), as vendors are usually happy to provide evaluation units for their hardware, especially if they are trying to secure a large purchase. Through this approach, builders can eliminate most hardware related issues that may otherwise come up later.
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