http://wiki.ad7zj.net/wiki/index.php?action=history&feed=atom&title=Vocore_Temperature_LoggerVocore Temperature Logger - Revision history2026-04-04T18:04:10ZRevision history for this page on the wikiMediaWiki 1.43.3http://wiki.ad7zj.net/wiki/index.php?title=Vocore_Temperature_Logger&diff=374&oldid=prevElijah: /* Live Data */2019-12-28T20:11:01Z<p><span class="autocomment">Live Data</span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 20:11, 28 December 2019</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>https://<del style="font-weight: bold; text-decoration: none;">tinyurl</del>.<del style="font-weight: bold; text-decoration: none;">com</del>/<del style="font-weight: bold; text-decoration: none;">kingmangreenhouse</del></div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>https://<ins style="font-weight: bold; text-decoration: none;">ad7zj</ins>.<ins style="font-weight: bold; text-decoration: none;">net</ins>/<ins style="font-weight: bold; text-decoration: none;">greenhouse/view-chart.html</ins></div></td></tr>
</table>Elijahhttp://wiki.ad7zj.net/wiki/index.php?title=Vocore_Temperature_Logger&diff=363&oldid=prevElijah: /* Overview */2018-03-05T21:32:43Z<p><span class="autocomment">Overview</span></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:32, 5 March 2018</td>
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<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Vocore_assembled.jpg|thumb|DIY Temp Logger]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Vocore_assembled.jpg|thumb|DIY Temp Logger]]</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Vocore_mounted.jpg|thumb|Mounted in the greenhouse]]</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>[[File:Vocore_mounted.jpg|thumb|Mounted in the greenhouse]]</div></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Awhile back I bought a Vocore because, well, who doesn't want a 1" square linux computer? :-) But after awhile sitting there on the shelf, this application popped up - monitoring temperature in my Dad's greenhouse. The biggest issue was getting DS18B20 one-wire temperature sensors to work with it. The stock OpenWRT image doesn't work with one-wire devices. A popular kernel module named w1-gpio-custom didn't have much luck either, <del style="font-weight: bold; text-decoration: none;">constantly returning </del>errors like "w1-gpio w1-gpio.0: gpio_request (pin) failed" and "w1-gpio: probe of w1-gpio.0 failed with error -22". After digging into the w1 kernel modules, I determined the w1-gpio driver needs an entry in the device tree file, as well as the selected GPIO freed up from the gpio-export driver. After making that modification and rebuilding OpenWRT, it works great. I posted the fix in more detail on the vocore forum <del style="font-weight: bold; text-decoration: none;">here: </del>http://forum.vocore.io/viewtopic.php?f=11&t=3868&sid=435b7035297db418e764f8794dd635b1 Of course then I had to upgrade to LEDE 17.01.04 and make a similar fix... :-)</div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Awhile back I bought a <ins style="font-weight: bold; text-decoration: none;">[http://vocore.io/ </ins>Vocore<ins style="font-weight: bold; text-decoration: none;">] </ins>because, well, who <ins style="font-weight: bold; text-decoration: none;">*</ins>doesn't<ins style="font-weight: bold; text-decoration: none;">* </ins>want a 1" square linux computer <ins style="font-weight: bold; text-decoration: none;">with built-in wifi</ins>? :-) But after awhile sitting there on the shelf, this application popped up - monitoring temperature in my Dad's greenhouse. The biggest issue was getting DS18B20 one-wire temperature sensors to work with it. The stock OpenWRT image doesn't work with one-wire devices. A popular kernel module named w1-gpio-custom didn't have much luck either, <ins style="font-weight: bold; text-decoration: none;">each time triggering </ins>errors like "w1-gpio w1-gpio.0: gpio_request (pin) failed" and "w1-gpio: probe of w1-gpio.0 failed with error -22". After digging into the w1 kernel modules <ins style="font-weight: bold; text-decoration: none;">and adding a bunch of pr_debug() statements</ins>, I determined the w1-gpio driver needs an entry in the device tree file, as well as the selected GPIO freed up from the gpio-export driver. After making that modification and rebuilding OpenWRT, it works great. I posted the fix in more detail on the vocore forum <ins style="font-weight: bold; text-decoration: none;">[</ins>http://forum.vocore.io/viewtopic.php?f=11&t=3868&sid=435b7035297db418e764f8794dd635b1 <ins style="font-weight: bold; text-decoration: none;">here]. </ins>Of course then I had to upgrade to LEDE 17.01.04 and make a similar fix... :-)</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker" data-marker="−"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #ffe49c; vertical-align: top; white-space: pre-wrap;"><div>Anyway, once that was working I wasn't sure what would be the most effective way to present the data. There are two temperature sensors, one inside and one outside. The whole "IoT" craze is really on a roll these days, so I decided to go that route and upload the data to a [https://thingsboard.io/ thingsboard] server. This makes the sensor side very easy, just hit a URL with curl and send a small JSON file. </div></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div>Anyway, once that was working I wasn't sure what would be the most effective way to present the data. There are two temperature sensors, one inside and one outside. The whole "IoT" craze is really on a roll these days, so I decided to go that route and upload the data to a [https://thingsboard.io/ thingsboard] server. This makes the sensor side very easy, just hit a URL with curl and send a small JSON file.</div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">I also log each point to a local text file in .csv format in case thingsboard shuts down or loses the data somehow. This is stored inside a folder served by LEDE's built-in web server so it's easy to access.</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div> </div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">All that just proves the famous saying that "to invent, you need a good imagination and a good supply of junk". Well, I'm not sure how imaginative this is but at least I have the supply of junk part :-)</ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>https://tinyurl.com/kingmangreenhouse</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>https://tinyurl.com/kingmangreenhouse</div></td></tr>
</table>Elijahhttp://wiki.ad7zj.net/wiki/index.php?title=Vocore_Temperature_Logger&diff=362&oldid=prevElijah at 21:21, 5 March 20182018-03-05T21:21:31Z<p></p>
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<td colspan="2" style="background-color: #fff; color: #202122; text-align: center;">Revision as of 21:21, 5 March 2018</td>
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<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">==Overview==</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Vocore_assembled.jpg|thumb|DIY Temp Logger]]</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">[[File:Vocore_mounted.jpg|thumb|Mounted in the greenhouse]]</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Awhile back I bought a Vocore because, well, who doesn't want a 1" square linux computer? :-) But after awhile sitting there on the shelf, this application popped up - monitoring temperature in my Dad's greenhouse. The biggest issue was getting DS18B20 one-wire temperature sensors to work with it. The stock OpenWRT image doesn't work with one-wire devices. A popular kernel module named w1-gpio-custom didn't have much luck either, constantly returning errors like "w1-gpio w1-gpio.0: gpio_request (pin) failed" and "w1-gpio: probe of w1-gpio.0 failed with error -22". After digging into the w1 kernel modules, I determined the w1-gpio driver needs an entry in the device tree file, as well as the selected GPIO freed up from the gpio-export driver. After making that modification and rebuilding OpenWRT, it works great. I posted the fix in more detail on the vocore forum here: http://forum.vocore.io/viewtopic.php?f=11&t=3868&sid=435b7035297db418e764f8794dd635b1 Of course then I had to upgrade to LEDE 17.01.04 and make a similar fix... :-)</ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;"></ins></div></td></tr>
<tr><td colspan="2" class="diff-side-deleted"></td><td class="diff-marker" data-marker="+"></td><td style="color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #a3d3ff; vertical-align: top; white-space: pre-wrap;"><div><ins style="font-weight: bold; text-decoration: none;">Anyway, once that was working I wasn't sure what would be the most effective way to present the data. There are two temperature sensors, one inside and one outside. The whole "IoT" craze is really on a roll these days, so I decided to go that route and upload the data to a [https://thingsboard.io/ thingsboard] server. This makes the sensor side very easy, just hit a URL with curl and send a small JSON file. </ins></div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><br></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>==Live Data==</div></td></tr>
<tr><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>https://tinyurl.com/kingmangreenhouse</div></td><td class="diff-marker"></td><td style="background-color: #f8f9fa; color: #202122; font-size: 88%; border-style: solid; border-width: 1px 1px 1px 4px; border-radius: 0.33em; border-color: #eaecf0; vertical-align: top; white-space: pre-wrap;"><div>https://tinyurl.com/kingmangreenhouse</div></td></tr>
</table>Elijahhttp://wiki.ad7zj.net/wiki/index.php?title=Vocore_Temperature_Logger&diff=359&oldid=prevElijah: Created page with " ==Live Data== https://tinyurl.com/kingmangreenhouse"2018-03-05T20:20:27Z<p>Created page with " ==Live Data== https://tinyurl.com/kingmangreenhouse"</p>
<p><b>New page</b></p><div><br />
==Live Data==<br />
https://tinyurl.com/kingmangreenhouse</div>Elijah