D1 mini : DS18B20 , PT6961 4 digital 7 segment LED 2019/01/092019/01/06 by Monster ThingSpeak : https://thingspeak.com/channels/670646 <span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span><span data-mce-type="bookmark" style="display: inline-block; width: 0px; overflow: hidden; line-height: 0;" class="mce_SELRES_start"></span> Read more