A basic NodeMCU and Simba OS example

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Ok, I had heard of Simba OS but hadn’t managed to try it, as quoted “2Simba is an RTOS and build framework. It aims to make embedded programming easy and portable”

I found a Node MCU board to play about with, so lets crack on.

Install it

Install Simba […]

Wemos and MAX44009 ambient light sensor example

The MAX44009 ambient light sensor features an I²C digital output that is ideal for a number of portable applications such as smartphones, notebooks, and industrial sensors. At less than 1µA operating current, it is the lowest power ambient light sensor in the industry and features an ultra-wide 22-bit dynamic range from 0.045 lux to 188,000 […]

Wemos and Soil Moisture Sensor example

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In this article, we are going to interface a Soil moisture sensor with an ESP8266. This sensor measures the volumetric content of water inside the soil and gives us the moisture level as output. The sensor is equipped with both analog and digital output.

The soil moisture sensor consists […]

Wemos buzzer shield example

In this example we look at another Wemos mini shield, this time its the buzzer_shield which as its name suggests is a basic buzzer. Its an MLT_8540.

The product page is https://wiki.wemos.cc/products:d1_mini_shields:buzzer_shield

 

Code

This example plays a few notes from a popular song

Source code   int buzzerPin=D5; //Buzzer control port, default D5 const int […]