View Ds18S20 Esp8266 Gif. * send temperature from esp8266 with multiple ds18b20 to mqtt server. One of the coolest things about onewire and ds18b20 temperature sensors is that each sensor has its own embedded address so you can have many of them on 1 data wire.
NodeMCU und ESP8266 - Einstieg in die ... from www.mikrocontroller-elektronik.de * send temperature from esp8266 with multiple ds18b20 to mqtt server. I'll create a pull request for master in a few days as there are a few more. It supports 3.7 to 12vdc power, so you can power it by a lipo battery and put it anywhere you need to.
4k7 ohm resistor, some wire.
Even less if other sensors are attached to the esp device and present in the sensor message. In this tutorial we will show how to build ds18b20 and esp8266 temperature sensor without arduino. 4k7 ohm resistor, some wire. Common all the vdd pins, gnd pins & signal pins.
