SIM808_MQTT_GPS_Tracker

SIM808 GPS/GPRS module with MQTT support to publish latitude and longitude to MQTT broker

RFID-RC522

This is the arduino code to read RFID card using RC-522 RFID module. The code used Software SPI pins. i.e. your SPI pins are not fixed, any pin of the arduino can be configured to act as any SPI pin. The DigitalIO library can be found at: https://github.com/greiman/DigitalIO

ArduinoPedometer

This is an arduino project to create a pedometer device using arduino and ADXL335 accelerometer.

pulsesensor

This Arduino code is used to calculate the Heart Beat from the Pulse Sensor module (https://pulsesensor.com/) and display the values as well as the Waveform on a 128x32 OLED display.

Smart_Home_json

An arduino IoT project to create a home automation scenario with ability to send and receive data over the internet via. a bluetooth module. must use an intermediate gateway device like a RasPi to connect to the internet.