ESP32 and GY-21P module

The GY-21P is an interesting module in that it combines a BMP280 sensor and an SI7021 sensor. The on-board BMP280+SI7021 sensor measures atmospheric pressure...

ESP32 and IR Line tracking sensor example

This is another example using a sensor from the 37 sensor kit, this time we use the one called the KY-033 Hunt sensor module. A...

ESP32 and Bargraph display example

The bar graph is basically a series of LEDs in a line, this is a common hardware display for analog sensors. It's made up...

ESP32 and CCS811 gas sensor example

In this example we will connect a CCS811 gas sensor to an ESP32, first of all lets look at the sensor The CCS811 is a...

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 and RGB led example

In this example we will connect an RGB led to our Wemos MIni, lets look at RGB leds first RGB LEDs consist of one red,...

LIS3MDL magnetic field sensor connected to a Wemos Lolin ESP32 module

In this article we look at another sensor - this time its the LIS3MDL which is a 3-axis MEMS magnetic field sensor, digital output,...

ESP32 and I2C LCD example

In this example we will interface to an I2C LCD using our ESP32. Now these I2C LCD's consist of 2 parts usually an HD44780 16×2...

ESP32 and a TSL2561 Luminosity Sensor example

The TSL2560 and TSL2561 are second-generation ambient light sensor devices. Each contains two integrating analog-to-digital converters (ADC) that integrate currents from two photodiodes. Integration...

BPI:bit and MPU-9250 Nine-Axis example using the Arduino IDE

In this article we look the MPU-9250 Nine-Axis (Gyro + Accelerometer + Compass) MEMS MotionTracking™ Device which is fitted to the BPI:bit The sensor uses...

Lolin32 and 2.4 TFT LCD Touch Screen shield example

In this article we look at the Lolin 32 to a 2.4“ inch 320×240 TFT LCD Touch Screen shield. This is the shield which we...

ESP32 and PCF8563 RTC module example

The PCF8563 is a CMOS Real-Time Clock (RTC) and calendar optimized for low power consumption. A programmable clock output, interrupt output, and voltage-low detector...