ESP32 and DS3231 RTC example

The DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC) with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. The device incorporates a battery...

ESP32 and MPL3115A2 absolute pressure sensor example

The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I2C digital interface. MPL3115A2 has a wide operating range of 20 kPa to...

Subscribing to MQTT topic using an ESP32

In this example we will subscribe to an MQTT broker and topic. Again we use the same CloudMQtt, arduino libraries and MQTTlens chrome app that...

MH ET LIVE ESP32 MINI KIT and BMP180 shield example

OK this is another wemos type shield that can easily be connected to a MH ET LIVE ESP32 MINI KIT, in this case this...

ESP32 and Max6675 example

In this example we take a look at the MAX6675 Cold-Junction-Compensated K-Thermocouple-to-Digital Converter The MAX6675 performs cold-junction compensation and digitizes the signal from a type-K thermocouple....

ESP32 capacitive touch example

Another great feature of the ESP32 is that it has the ability to detect touch on various pins by having capacitive touch sensors, in fact...

ESP32 and AM2301 sensor example

AM2301 output calibrated digital signal. It applys exclusive digital-signal-collecting-technique and humidity sensing technology, assuring its reliability and stability. Its sensing elements is connected with...

ESP32 and ML8511 sensor example

The ML8511 measures the amount of ultra violet rays contained in sunlight, and it is used for the equipment which displays the suntan by...

ESP32 and BMP280 sensor example

BMP280 is an absolute barometric pressure sensor especially designed for mobile applications. The sensor module is housed in an extremely compact package. Its small...

ESP32 and MPU-9250 sensor example

The MPU-9250 is the company’s second generation 9-axis Motion Processing Unit™ for smartphones, tablets, wearable sensors, and other consumer markets. The MPU-9250, delivered in...

ESP32 and LM35 temperature sensor

In this example we will connect an LM35 temperature sensor to our ESP32 module The LM35 series are precision integrated-circuit temperature sensors, whose output voltage...

ESP32 True random number generator example

The ESP32 contains a hardware random number generator, values from it can be obtained using esp_random(). When Wi-Fi or Bluetooth are enabled, numbers returned by...