I made a Clock that not only display Time,Date, Temp & Hum but you can send message to the clock via Mobile App (Blynk) from anywhere in the World as long as you are connected to internet. And you can also alert by Pressing Panic Button in Clock a Notification Alert will be sent to Mobile instantly through internet. Good for Home Security if you have kid or elderly person in home alone. In Emergency they can alert you by just pressing the button at the back of the Clock. It also work offline showing current time ,temp humidity. Two way communication. The case is designed in Tinkercad where all components will fit in easily.
Step 1: Components Needed
- DHT-22 sensor
- DS3231 RTC Module
- MAX 7219 LED Matrix Display
- Mini Push Button Switch – 5-6mm
- Resistor 10k Ohm
Step 2: Circuit Design & Blynk App
You can make this circuit with Breadboard or make a PCB which will be easier to use.
Step 3: 3D Printing & Assembling
You can download the 3D (stl) file designed in Tinkercad & Print the case 3D printer. Now you can fit it inside the case.Check video for details instruction.
Step 4: Making the Blynk App
Now install Blynk App and create a new project for the Smart Clock.Check video for detail instruction & you are ready to use.
Step 5: Detail Instruction & Download Code
Check the video for detail Instruction.
Download Code Below