Wemos Mini and I2C LCD example
Sometimes a nice big LCD is useful for your projects, in this example we will interface to an I2C LCD using our ESP32. Now...
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,...
ESP8266 and RFID-RC522 module example
In this example we will connect an RFID-RC522 module and connect to a Wemos Mini
The microcontroller and card reader uses SPI for communication ....
ESP8266 and MMA8452 accelerometer example
In this example we will connect a MMA8452Q accelerometer to an ESP8266 - as usual it's a Wemos Mini
Lets look at the sensor
The MMA8452Q is a...
WS2812B RGB SHIELD for WeMos D1 mini examples
In this example we look at a new wemos shield (for us anyway), this is called the RGB shield and as you might expect...
Si1145 sensor and ESP8266 example
Another sensor reaches the desk, this time it is a Si1145 sensor, we will connect it to an ESP8266 and test it out
The Si1145/46/47...
BME680 environment sensor and ESP8266 example
In this article we will connect a BME680 sensor to an ESP8266 - as usual we will use a Wemos Mini
BME680 is an integrated...
Wemos and LIS2DH three-axis linear accelerometer example
The LIS2DH is an ultra low-power high performance three-axis linear accelerometer belonging to the “femto” family, with digital I2C/SPI serial interface standard output.
The LIS2DH...
ESP8266 displaying a QR code on an OLED display
In this example we will display a QR code on an OLED display with an ESP8266, in this case a Wemos mini. This will...
DPS310 barometric pressure sensor and ESP8266 example using the Arduino IDE
In this article we look at a DPS310 barometric pressure sensor and we will connect it to a Wemos Mini
First lets look at the...
Wemos and PCF8591 example
The PCF8591 is a monolithically integrated, and a separate power supply, low-power, 8-bit CMOS data acquisition devices. The PCF8591 has the four analog inputs,...
Wemos Mini and a PCF8574
The PCF8574 is an 8 bits I/O port expander that uses the I2C protocol. Using this IC, you can use only the SDA and...
MQ3 Gas Sensor example
The MQ3 Gas Sensor module is useful for gas leakage detection (in home and industry). It is suitable for detecting Alcohol, Benzine, CH4, Hexane, LPG,...
GA1A12S202 light sensor example
In this example we will connect a GA1A12S202 Log-Scale Analog Light Sensor to an Arduino.
The features of this sensor are as follows
Output voltage increases...
The Wemos PIR shield
A new wemos shield and this time its based on a passive infrared sensor
An overview of a PIR
A passive infrared sensor (PIR sensor) is...
Wemos and 4051 LED example
The HCF4051 device is a monolithic integrated circuit fabricated in MOS (metal oxide semiconductor) technology available in SO-16 and PDIP-16 packages.
The HCF4051 analog multiplexer/demultiplexer...