Path: csiph.com!1.us.feeder.erje.net!3.us.feeder.erje.net!feeder.erje.net!news.linkpendium.com!news.linkpendium.com!panix!wb8foz From: David Lesher Newsgroups: sci.electronics.design Subject: Re: Output boards, SPI vs I2C Date: Tue, 4 Apr 2017 02:59:57 +0000 (UTC) Organization: NRK Clinic for habitual NetNews Abusers - Beltway Annex Lines: 34 Message-ID: References: <08WdnZ9VyIcj60fFnZ2dnUU7-fPNnZ2d@supernews.com> <7oeldc5ibmm7svcqecs2knh0thoif9bs2c@4ax.com> NNTP-Posting-Host: panix5.panix.com X-Trace: reader1.panix.com 1491274797 11004 166.84.1.5 (4 Apr 2017 02:59:57 GMT) X-Complaints-To: abuse@panix.com NNTP-Posting-Date: Tue, 4 Apr 2017 02:59:57 +0000 (UTC) User-Agent: nn/6.7.3 Xref: csiph.com sci.electronics.design:455010 rickman writes: >Why don't you just get a controller that includes Ethernet to start with? The controllers we have seen are 6-12X the price of this approach. >I haven't seen where you explain why you are only looking at PLC >controllers rather than generic CPU boards. >From how you have explained your needs so far, there is >nothing in a PLC that you will use that is different from a CPU >board. From what I can see, you would do well with a Raspberry >Pi or a Beagle Bone Black type board. Ethernet included and >tons of support (metric tons even). This controller has value-added in integration, packaging, input protection and such. They have done things we will not have to ourselves. We looked at Beagles but want to avoid the issues with supporting a Linux device. (& that would be far more overkill.) >So what do you get with a PLC that you don't get with one of the *many* >CPU boards? I've not found an Arduino case/touchscreen/AD/input protection/ etc that we can plug in and fly with. Suggestions? -- A host is a host from coast to coast.................wb8foz@nrk.com & no one will talk to a host that's close.......................... Unless the host (that isn't close).........................pob 1433 is busy, hung or dead....................................20915-1433