Sound Sensor Tutorial for Arduino, ESP8266 and ESP32

Sensitivity Comparison between KY-038 and KY-037 Modules

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

SD Card Tutorial for Arduino, ESP8266 and ESP32

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SD Card Tutorial for Arduino, ESP8266 and ESP32 In this tutorial you learn how to use the SD card module in combination with your Arduino, ESP8266 and ESP32 microcontroller board. We create a temperature logger where we store the time from a real-time clock module, the temperature and humidity to a micro SD card. Table … Read more

I2S Sound Tutorial for ESP32

I2S ESP32 Tutorial

I2S Sound Tutorial for ESP32 In this tutorial you learn how to  use the I2S communication protocol to transfer digital sound signals to record and visualize microphone data and play music from the internal memory as well as from an external SD card. We also compare different microcontroller and see why we prefer an ESP32 … Read more

Guide to reduce the Arduino Power Consumption

Arduino Pro Mini Measurement

Guide to reduce the Arduino Power Consumption In this guide I show you 3 hardware and 1 software measure that reduce the energy consumption of the Arduino microcontroller up to 89%. The following measures are done in this tutorial: Use a Smaller Microcontroller (Hardware) Reduce Clock Speed (Hardware) Reduce Operation Voltage (Hardware) Use the Arduino … Read more

What is the best Battery for the ESP32

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What is the best battery for the EPS32? In this article you learn what is the best battery for the ESP32 microcontroller. First I describe the different voltage levels on the ESP32 board to avoid magic smoke and a damage of the microcontroller. On top of all this content, you learn which batteries need a … Read more

The best battery for ESP8266 microcontrollers

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Best Battery for ESP8266 microcontroller In this article you learn what is the best battery for the ESP8266 microcontroller. First I describe the different voltage levels on the ESP8266 board to avoid magic smoke and a damage of the microcontroller. On top of all this content, you learn which batteries need a voltage regulator and … Read more

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- Ranking of 14 Arduino, ESP8266 and ESP32 boards

- Comparison of the Power Consumption of all Boards

- Detailed Datasheet Information and Pinouts