GY-273 QMC5883L clone HMC5883L magnetometer for Arduino, esp8266 and esp32
The sensor GY-273 QMC5883L clone HMC5883L magnetometer for Arduino, esp8266, and esp32 is cheap and reasonably precise but needs some check for the clone version.
Category: i2c
i2c Arduino: how to create network, parameters and address scanner
I love the I2C protocol, and when I need a sensor, every time I try to find one with this protocol, I have also written some libraries for various sensors that use I2C.
In this first article, we are going to learn the basics, then how to create a network with our Arduino UNO and MEGA. Arduino has an interesting feature that can work as a Master and as a Slave.
i2c, SPI and UART compared
I2C, SPI, and UART are protocols that we encounter all the time in this world, but why do we need all these protocols to interconnect external peripherals? Well! The answer is simple because there are many needs to be met, and each protocol has a well-defined scope.
LineaMeteoStazione: The Personalized WiFi Weather Station using ESP32, ESP8266 and Attiny85 with OTA – 4
LineaMeteoStazione is a complete weather station solar powered which can be interfaced with professional sensors from Sensirion as well as some Davis Instrument components (Rain Gauge, Anemometer) It also can be interfaced with a...
LineaMeteoStazione: Technical Guide Display – 2
This starting guide will talk about how it works LineaMeteoStazione, a bit more technically speaking.
Technical Guide Display.
LineaMeteoStazione: Technical Guide Master Device, Sending and Collecting Data – 1
This starting guide will talk about how it works LineaMeteoStazione, a bit more technically speaking.
Technical Guide Master Device, Sending and Collecting Data.
PCF8574 i2c digital I/O expander: Arduino, esp8266 and esp32, rotary encoder – Part 2
Library to use i2c pcf8574 IC with arduino, esp8266 and esp32.
This IC can control (until 8) digital devices like button or led with 2 only pins.
Here I explain the manage of multiple rotary encoder.
PCF8575 i2c 16 bit digital I/O expander
Library to use i2c pcf8575 IC with arduino and esp8266.
This IC can control (until 16) digital devices like button or led with 2 only pins.
Can read and write digital value with only 2 wire (perfect for ESP-01).
I try to simplify the use of this IC, with a minimal set of operation.
Temperature humidity sensors comparison (Code configuration) Part 2
Wherever I go, peoples asked me why I chose DHT12, and why I spent time to write a library for this small sensor, in this articles I’ll try to give an answer (competitor bmp280, DHT11, DHT22, Dallas and thermistor).
Today the code to get sensors fully working.
Temperature humidity sensors comparison (Specifications) Part 1
Wherever I go, peoples asked me why I chose DHT12, and why I spent time to write a library for this small sensor, in this articles I’ll try to give an answer, and introduce the competitor bmp280, DHT11, DHT22, Dallas and thermistor.
Today the specification of the sensors I use.
