On Wednesday 06 Feb 2013, Brendan Simon (eTRIX) wrote: > I'm looking for a very small and very low cost SBC with a USB host port, > serial port (UART or RS485) and Ethernet (10 or 10/100). The purpose is > to bridge between two systems -- one system is a piece of equipment that > only has a USB device port (serial protocol) and the other is a master > controller which can have Ethernet and/or RS485. > > I was hoping to also add other services such as :- web browser, FTP > server, etc, which led me towards an openwrt solution as possibility. > > The best board I've come up with is a TP-Link TL-WR703N. It is cheap, > has Ethernet (and wifi) and an internal serial, but the internal serial > is just a couple of pads (I'd prefer a proper connector) and I'm not > sure I can modify it for RS485 (e.g. provision for a Tx/Rx enable > signal). Two serial ports and/or two usb ports would be nice but not > necessary. > > I was wondering if anyone could suggest other boards/products to look at :) > > Thanks, Brendan. Have you looked at the carambola? The current version has some problems with USB (earthing problems on the shield), but a new version is due this month. They use a version of OpenWRT as firmware.
David
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