Let’s start with the DS18b20 digital temperature sensor. If you want to learn how to make schematics and pcb then watch my tutorial. This schematic is designed in cadsoft eagle 9.1.0 version. ![]() This temperature sensor is capable of measuring the temperature ranging from -55☌ to 125☌ Arduino DS18B20 Circuit Diagram: This wire is connected with the Nodemcu Esp8266 wifi module ground.
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