{"id":91,"date":"2016-07-08T22:32:05","date_gmt":"2016-07-08T14:32:05","guid":{"rendered":"http:\/\/www.onramp.com.au\/?p=91"},"modified":"2024-12-09T12:24:28","modified_gmt":"2024-12-09T04:24:28","slug":"raspberry-pi-poe","status":"publish","type":"post","link":"https:\/\/www.onramp.com.au\/?p=91","title":{"rendered":"Raspberry Pi PoE"},"content":{"rendered":"

I’ve been looking into ways of powering up Raspberry Pi computers from power-over-ethernet so as to allow them to be easily used in remote locations without the need for additional USB power supplies.<\/p>\n

Of course, you can power them up through the pin headers, but finding a nice regulated supply for that option was tricky too – the main advantage of the USB power input is that it has some level of protection for the Pi.<\/p>\n

There are a number of PoE hats for the Pi, including this one<\/a> which is available locally, but for $80.<\/p>\n

When I used to do more IP Telephony work, I used to buy adapters to power up non-PoE phones from PoE switches – specifically the Linksys POES5, now discontinued, but which can be found for $20-30 on the web:<\/p>\n

<\/a>

Linksys POES5<\/p><\/div>\n

These are capable of pushing out 5V at up to 2A from a IEEE Class 0 PoE source – perfect for a Pi (perhaps not the 3, but all the others). I didn’t have a USB cable adapter, so I modified one to do the job as a test – it’s pretty straightforward if you can solder – and it would be pretty easy, even if you can’t. The cover for the POES5 pops apart revealing this board inside:<\/p>\n

\"POES5<\/a><\/p>\n

The ethernet cable from the switch plugs in on the right, and the two outputs on the left are the ethernet passthrough on the 4-pin connector (note – this means it can’t pass through GigE) and the 5V output on the 2-pin connector.<\/p>\n

I chopped the end from a micro-USB cable and removed all but the power leads – red and black which go to pins 1 and 5 on the B-end<\/p>\n

\"Mini<\/a><\/p>\n

I attached these to the same locations as the original red\/black wires on the 2-pin connector and voila<\/p>\n

\"PoE<\/a> \"PoE<\/a><\/p>\n

This old model B boots up just fine – I’m planning to use this one for an OpenHAB host – I’ll post more on that later.<\/p>\n","protected":false},"excerpt":{"rendered":"

I’ve been looking into ways of powering up Raspberry Pi computers from power-over-ethernet so as to allow them to be easily used in remote locations without the need for additional USB power supplies. Of course, you can power them up … Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[6,5],"_links":{"self":[{"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/posts\/91"}],"collection":[{"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=91"}],"version-history":[{"count":5,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/posts\/91\/revisions"}],"predecessor-version":[{"id":126,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=\/wp\/v2\/posts\/91\/revisions\/126"}],"wp:attachment":[{"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=91"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=91"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.onramp.com.au\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=91"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}