Hi, At the Wimborne Model Town we have chosen to communicate data between Raspberry Pis using Ethernet and, (as previously discussed), we've installed around 100 m of armoured Cat 5e cable around the site.
We are mainly using Raspberry Pi Zeros (because they are cheap) and during our prototype development we initially used a pair of adaptors similar to these: https://www.ebay.co.uk/itm/Hot-Micro-USB-to-Network-LAN-Ethernet-RJ45-Adapter-3-Port-USB-2-0-HUB-Adapter/252846835224?hash=item3aded88618:g: 0W4AAOSwU8hY5fdh However, we found that data throughput was dire, so we substituted a different adaptor at one end: https://www.ebay.co.uk/itm/Ethernet-External-USB-to-Lan-RJ45-Network-Card-Adapter-10-100-Mbps-for-Laptop-PC/172597178384? epid=506199648&hash=item282f97f010:g:p40AAOSwzgBY0Gdh This solved the problem but needed a Micro USB to Type B USB adaptor to interface to the Pi Zero. I now need to buy a lot more adaptors and have a couple of questions that I need to answer before I commit what might be quite a bit of the WMTs budget only to end up with the same problem as we had originally. 1. The most important question is; does anyone know why this might have occurred? The original adaptors were extremely cheap and included a USB hub, so they may simply have been badly designed. 2. If I buy a bunch of the second type of adaptor (which is also cheap) how likely is it that we end up with the same problem. (Is the problem the no- brand nature of the manufacturer?) 3. If I buy a branded type, such as TP-Link, Belkin or Linksys, how likely is it that this problem is endemic to USB / Ethernet Adaptors? I realise that without the answer to question 1, questions 2 and 3 become just guess work, but maybe one of you have come across this before? -- Terry Coles -- Next meeting at *new* venue: Bournemouth, Tuesday, 2018-10-02 20:00 Check if you're replying to the list or the author Meetings, mailing list, IRC, ... http://dorset.lug.org.uk/ New thread, don't hijack: mailto:dorset@mailman.lug.org.uk
