MH-Z14A CO2 Meter Tutorial with Arduino, ESP8266 or ESP32 The objective of this MH-Z14A CO2 meter tutorial is that you learn the basic functionality of the MH-Z14A and how this CO2 sensor can be useful in times of Corona. You learn how to build a CO2 alarm that can be used in the office and … Read more
Control a DC Motor with Arduino, ESP8266 or ESP32 without IC The objective of this article is to show you how to control a DC motor with your Arduino, ESP8266 or ESP32 microcontroller board but without the use of an IC motor driver.After a short summary of the basic functionality of the DC motor, we … Read more
ESP8266 WeMos D1 Mini Tutorial In this tutorial you learn the highlights of the ESP8266 WeMos D1 Mini regarding its datasheet, the pinout and three different possibilities for the power supply. Moreover, you learn how to use the power modes of the ESP8266 to reduce the power consumption up to 99% in the deep sleep … Read more
ESP8266 NodeMCU Tutorial In this tutorial you learn the highlights of the ESP8266 NodeMCU regarding its datasheet and you learn the differences of the pinout between the NodeMCU V2 and V3 Lolin. There are three possibilities to power the ESP8266 NodeMCU and you can reduce the power consumption up to 91% with the deep sleep … Read more
TCRT5000 Line Tracking Module for Arduino, ESP8266 and ESP32 The TCRT5000 Line Tracking Module is an infrared distance module that is most used for robot applications like a line following robot, product line decoder or other robot projects. In this tutorial you learn the pinout and schematic of two different TCRT5000 line tracking modules. At … Read more
Bosch BME688 4 in 1 Environmental Sensor The Bosch BME688 is the world’s first 4 in 1 environmental sensor that uses artificial intelligence to adapt the sensor with regards to your use case. The BME688 is the further development of the BME680 and measures the barometric pressure, temperature, humidity, and different gases. Link Picture Table … Read more
HC-SR501 PIR Motion Sensor for Arduino, ESP8266 and ESP32 The HC-SR501 PIR Motion Sensor is an infrared sensor that is able to detect motions. In this tutorial, I show you how the functionality of the HC-SR501 with the help of the schematic of the PCB. We discuss all three adjustment options before you see how … Read more
Active and Passive Buzzer for Arduino, ESP8266 and ESP32 In this tutorial you learn how active and passive buzzer work and the differences between both buzzers. After we create a full circuit along with a NPN MOSFET and flyback diode and Arduino, ESP8266 or ESP32 microcontroller, we program a sound example for the active buzzer … Read more
Sound Sensor Tutorial for Arduino, ESP8266 and ESP32 In this tutorial you learn everything about the KY-038 and KY-037 microphone sound sensor modules. After the technical specifications I explain the schematic and the functionality of the sound sensor modules in detail. You create the wiring and the program code for Arduino, ESP8266 and ESP32 microcontroller … Read more
Guide to Reduce the ESP32 Power Consumption by 95% If you want to create a project that runs on battery, you have to make sure that the ESP32 power consumption is as low as possible to increase the lifespan of the battery. In this article I will show you how to reduce the power consumption … Read more