nicoolaj / noearlywakeup

Prevent child from waking up too early

No early wake-up

Never accept a child to wake you up too early in the morning

Description

Your child should know if he/she can walk to your bedroom or if they have to keep calm and try to sleep again in his/her bedroom. A child isn't aware of time reading and has very limited time notions Now with this a few pieces of electronics and an arduino, they will be able to know if it's time or not to slip into your room.

Requirements

• Arduino uno (may work with other harware)
• DS1307 clock
• SSD1306 OLED screen 128x32 (bi-color)
• 220Ω resistor
• LED

Wiring

• clock

Arduino	<=>	<=>	Clock
5V	<=	=>	5V
Gnd	<=	=>	Gnd
A4	<=	=>	SDA
A5	<=	=>	SCL

• led

Arduino	<=>	<=>	LED
D13	<=	220Ω	.
.	220Ω	LED+	.
.	.	LED-	Gnd

• OLED Display

Arduino	<=>	<=>	OLED
3.3V	<=	=>	VCC
Gnd	<=	=>	Gnd
A4	<=	=>	SDA
A5	<=	=>	SCL

• Push Button (Normally open)

Arduino	<=>	<=>	Pushbutton
D4	<=	=>	+
Gnd	<=	=>	-

• HC-SR04

Arduino	<=>	<=>	HC-SR04
5V	<=	=>	VCC
D2	<=	=>	Trig
D3	<=	=>	Echo
Gnd	<=	=>	Gnd