{"id":6046,"date":"2020-03-01T23:45:12","date_gmt":"2020-03-02T04:45:12","guid":{"rendered":"https:\/\/www.rushworth.us\/lisa\/?p=6046"},"modified":"2022-08-24T15:07:54","modified_gmt":"2022-08-24T20:07:54","slug":"esp8826-12e","status":"publish","type":"post","link":"https:\/\/www.rushworth.us\/lisa\/?p=6046","title":{"rendered":"ESP8826 (12e) Multisensor"},"content":{"rendered":"

We’d set up a prototype multi-sensor with an environment sensing kit that Scott picked up at MicroCenter a few years ago. There’s a little LCD display … but we wanted to report readings back to our OpenHAB server. Which required a network connection. Checking out prices for network cards to add to the Uno … well, it wasn’t a cheap add-on. But we found these ESP8266 modules that support 802.11b\/g\/n and<\/em> provide the memory\/processing for small programs. At about 3$ delivered, that was exactly what we needed.<\/p>\n

I ordered a bunch of components to make multi-sensors – pressure sensors<\/a>, luminescence sensors<\/a>, temperature\/humidity sensors<\/a>. The sensors connect into a CP2102 ESP8266<\/a>. The device is powered by a couple of 18650’s in a little box<\/a> — another buck. There’s some miscellaneous wiring and a little breadboard, too. The total cost for the multi-sensor is about 8.50$. We could add a vibration sensor<\/a> for another 0.50$, a PIR sensor<\/a> for 2$, and a UV sensor<\/a> for 2.50$. That’s 13.50$ for 7 different sensors — and we don’t need<\/em> seven sensors everywhere.<\/p>\n

I kind of want to make a weather station too — add a water level sensor<\/a>, a precipitation detector<\/a>, and a wind speed sensor<\/a>. Those are surprisingly expensive! I want to check out the process to build your own anemometer<\/a>. But I’d probably buy a nice Davis Anemometer \ud83d\ude42<\/p>\n

Connecting to a WiFi network with the ESP8266 is really easy:<\/p>\n