This is a cool IoT project for beginners using NodeMCU and Blynk app. Through this project, you can control 4 devices in your home.
Basics on how to set up Zigbee using XCTU.
Current Source DAC AD5420 and Arduino UNO
A general purpose wireless I/O board using a Particle Photon. Control a small motor, solenoid, servo, external loads, buzzer and sensors.
Guide to use esp8266 flash memory and Little File system using using Arduino IDE. This guide covers how to read, write and delete data.