On Wed, Aug 10, 2016 at 3:28 PM, <goelan...@gmail.com> wrote: > > It's near perfect - my unit was mildly fussy about how I installed it > because of the cape's power pins etc possibly causing a short so I needed > to tape and hot-glue some metallic surfaces to avoid magic smoke escaping, > but that was a pre-production unit :) >
Just some context for this. The Replicape is an awesome 3D printer cape, and I originally designed this Hub because I wanted more USB ports to use on my 3d printer with the Replicape. SEE: http://www.thing-printer.com/product/replicape/ However, like my board, the Replicape pushes the envelope and is a bit longer than a regular cape, further, the part that is longer contains these nice pluggable terminal blocks, which have large through hole pins to deal with the current requirements of the Replicape. My Hub extends directly under this area of the Replicape. Its a nice match in one way because its about the same length, BUT the tops of the USB A connectors are metal, so if the pins of the pluggable terminal blocks short out on the tops of the USB A connectors, well i am sure you can imagine the possible results. However, it isn't really a big issue, putting a small shim to elevate the board, or a barrier between the two neatly solves the problem, which is what Jon is talking about. For a standard size cape this would not be an issue. http://imgur.com/eVW48in Here you can see the USB hub and replicape together, I solved the problem by trimming the pins and using hot melt as an insinuative layer. Further my USB Hub is elevated from the BBB, by design, it lets me mount to the mounting holes, reduces the overall length AND still allows cables to connect underneath the BBB to the HDMI port, and easy access to the sdcard. Bonus Picture: http://imgur.com/hjDOrX6 The fat red wire in that picture is SELF powering the BBB USB 4 hub, tapping directly from the 5V power input on the BBB. A single wire is all it takes (no extra external power supply for the hub). The GND return is through the USB port on the BBB. This lets the hub easily drive a full 500ma on each USB port provided the power supply of the BBB is sufficient for the task. Doing this is not required, if 500ma is enough, then just plug in the hub and go, but if you want more power, this is a very easy and neat mod to achieve it. -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. To view this discussion on the web visit https://groups.google.com/d/msgid/beagleboard/CA%2BNu%2BnHmhKTXxpyxCJiCF-%3DrqzQRsVCtODqgomdD5rwrTqG6sA%40mail.gmail.com. For more options, visit https://groups.google.com/d/optout.
