Wemos and MAX44009 ambient light sensor example

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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 […]

Wemos and Soil Moisture Sensor example

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 of two probes which are used […]

Wemos buzzer shield example

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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 […]

Wemos mini MATRIX LED Shield example

A new shield for the Wemos Mini came my way recently, this is called the MATRIX LED Shield – You can find out more at https://wiki.wemos.cc/products:d1_mini_shields:matrix_led_shield

The board uses a TM1640, as you can see there are 8×8 LEDs with 8 levels of intensity. The shield will also use the D5 an D7 pins […]