ESP8266 Pinout Reference
One of the nice things about the ESP8266 is that it has a fair amount of GPIO pins to work with. You won’t have to juggle or multiplex your IO pins. However, there are a few things to keep in…
Soil Moisture Sensor Interfacing with NodeMCU
Overview of Soil Moisture Sensor Soil moisture is basically the content of water present in the soil. This can be measured using a soil moisture sensor which consists of two conducting probes that act as a probe. It can measure…
Wemos and PCF8591 example
The PCF8591 is a monolithically integrated, and a separate power supply, low-power, 8-bit CMOS data acquisition devices. The PCF8591 has the four analog inputs, one analog output and a serial I2C bus interface. PCF8591 three address pins A0, A1 and…
NodeMCU i2c Scanner on Arduino IDE
This tutorial of Robo India explains how to get address of i2c device connected to a NodeMCU using Arduino IDE. Detailed Tutorial 1. Introduction: 2C bus is a means of connecting several peripheral input and output devices that support I2C…