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April 6, 2011
about 2 months ago
The case can be nice, but the manufacturer doesn’t QUITE have the fit-and-finish solid on these cases. Yes, they fit your Pi. They won’t all stay shut. Be aware of that detail The review doesn’t tell the whole story.
about 5 months ago
Odd…you list this as being available but yet the OLS board’s retired. What use is this, without the other? Backfill for someone that busted theirs?
about 8 months ago
The thing about moving it to other Xilinx parts is that this is geared for the Mojo dev board. You’d have to design a similar board yourself (or a really narfy lashup for this one) which then means you’re doing a lot of work yourself and need to be knowing precisely what you’re doing on the VHDL/Verilog code in the first place.
And, to the point I am making…
If you follow up the link, this is the class of device I’m referring to (And needing- yes, I’m trying to switch that much current…7 times over…). “Just a MOSFET” doesn’t get you isolation combined with fairly high switch currents without a lot of thought and design that people like Cydom or Opto-22 put into making these things. One could use a motor controller, but it’s not really designed for switching there, they are designed to control brushed or brushless motors which is a differing beastie than a “relay” is.
Yes, that it is, but you have to design up the circuit, etc. They make these nifty packaged up devices that don’t need a circuitboard, trying to figure out the resistances needed, etc. and handle quite a bit of amperage.
Just because it’s essentially just a MOSFET, doesn’t mean someone wants to mess with that aspect of things- sometimes they just want a solid-state switch for a design. Yes, I know, lazy. I’ll own that in this case- but I’ve bigger fish to fry and have limited resources (time being one of them…) on a project of moderate import to a lot more than just myself. They package them up for people for just this reason and it’d be nice to be able to have a one-stop shop for this stuff.
(Hint: This device is little more than an LED and photo TRIAC and can easily be done that way- but you see it in a similar convienient package…)
Ah, someone else looking for what I was.
And if you’re adhering, make SURE it’s a thermal adhesive like Artic Alumina.
They make Automotive and other DC switched versions of these devices. It’d be nice to have something in this class of device that did this available (And I’m a bit surprised with the emphasis on robotics SparkFun has that they don’t carry such parts in inventory…) Guess I’ll be looking elsewhere for that because I need it for a project and I need to be switching about 4-5A at 12V on an often enough basis that I’m needing to worry about contact life on a electromechanical relay.
Yeah, it’s a fusion of an amped up Arduino coupled to an LX9 Spartan6 FPGA device.
Heh… Spoken like someone that thinks he knows what he’s talking about and doesn’t grok there’s something called tradeoffs- and sometimes the tradeoffs of being all on one FPGA device works, SOMETIMES THEY DON’T.
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