Wemos Infrared receiver example
In this example we look at how to connect an IR Reciever. Generally, they require Vcc(5v) but I found this to work well with 3v3, GND...
Using a STTS22H temperature sensor with an ESP8266
In this article we look at a temperature sensor, the STTS22H sensor from ST and connect it to an ESP8266 board
Sensor Information
The STTS22H is...
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...
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,...
ESP8266 and CJMCU-1010 capacitive touch module example
In this example we look at the CJMCU-1010 module - this is based on the AT42QT101x
The AT42QT101x Single Key capacitive touch controller family provides an easy...
ESP8266 and L9110 fan module example
In this example we connect an ESp8266 to a dual L9110 fan module. This is a commonly found, basic low cost module which consists...
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...
Wemos 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...
PCT2075 temperature-to-digital converter and ESP8266 example using the Arduino IDE
In this article we look at a PCT2075 temperature-to-digital converter and we will connect it to a Wemos Mini
First lets look at the sensor
The...
Wemos and a MQ-135 sensor
MQ-135 gas sensor is a hazardous gas detection apparatus for the family, the environment, suitable for ammonia, aromatic compounds, sulfur, benzene vapor, smoke and other...
MPL3115A2 pressure sensor and ESP8266
The MPL3115A2 is a compact, piezoresistive, absolute pressure sensor with an I2C digital interface. MPL3115A2 has a wide operating range of 20 kPa to...
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 ....
I2C Scanner
This is a basic example which will display via the serial monitor the address of any devices connected to your Wemos.
Its the same as...
Using a BMP384 pressure sensor with an ESP8266
In this article we look at a temperature and pressure sensor, the BMP384 pressure sensor from Bosch Sensortec, and connect it to an ESP8266...
TSL2591 light-to-digital converter and ESP8266 example
In this article we look at another light-to-digital converter - this time its the TSL2591 and we will connect it to a Wemos Mini
First...
Wemos and SHT31
SHT31 is the next generation of Sensirion’s temperature and humidity sensors. It builds on a new CMOSens® sensor chip that is at the heart of...