Digital Alarm Clock Soldering Kit - Cyber Box Tutorials

Have you ever forgotten to charge your phone before, and have it die prior to your alarm sounding?  Well you're in luck.  This months soldering kit is a digital alarm clock that plays your favorite mp3 to wake you up in the morning.

First, you should refresh yourself on soldering safety!


Arduino Nano → This micro processor monitors all of the inputs (buttons) and determines which thing should happen next on the outputs (LEDs and Clock Display).

Buttons →>These momentary buttons create a connection when pressed, and give feedback to the processor.

Real Time Clock →  This module also known as (RTC)  is used to provide precise date/time information as long as the cr2032 battery is inserted.

Part Name  QTY Description
Red LED 1 Red Dome
Potentiometer 1 5 Pin Knob
Nano Pin Header 2 15 Pin Header
Nano Socket 2 15 Pin Socket
Arduino Nano  1 Blue Board

1k Ohm Resistor

2 Blown, Black, Red
100 Ohm Resistor 1 Brown, Black, Brown
Switch 1 4 Pin Square with 2 Switches
USB Mini Cable 1 Black Cable 
Buttons 6 4 Pin Square
.1uF Capacitor 1 Yellow Two Pin
Clock Face 1 Digital Clock Face with 4 Pins
IC 1 Black 8 Pin IC
Board 1 Black Printed Board
Battery 1 Button Cell Battery
Battery Holder 1 Black Circle
SD Card 1 Flat rectangle
Speaker 1 Black Circle with Holes
Clock Socket 1 4 Pin Socket
Crystal 1 Small Silver Cylinder
DF Player 1 Square with Slot for SD Card
DF Player Socket 2 8 Pin Socket




Count all of your parts and verify everything is in your kit.



Step 1

Locate the 100 ohm Resistors.. Bend the leads and install into the location labeled R3.

Step 2

Locate the 1K ohm resistors, there should be 2. Bend the leads on the resistors and install them into locations labeled R1 and R2.


Step 3

Locate the crystal.  Bend the leads, and install it into the location labeled Y1.

Step 4

Locate the IC install it into the slot labeled U2. Be sure to align the notch on one edge of the IC to match the printed notch on the PCB. (it should be pointing towards the speaker)

Step 5

Next, locate and install the switch and install it into the slot labeled SW7.  (Make sure that the on marking on the switch is pointing toward the speaker)

Step 6

Locate the battery connector and install it into the slot labeled BT1 located on the back of the board.  Be sure to install the connector with the flat edge matching the printed outline on the board.

Step 7

Locate the yellow .1uf capacitor, and install it into the slots labeled C1.

Step 8

Locate the buttons and install them into the slots labeled SW1, SW2, SW3, SW4, SW5, and SW6.  There should be 6 buttons total.

Step 9

Locate the LED, and install it into the slot labeled D1, make sure that the shorter lead is inserted into the - slot and the longer lead into the +.( the one in the picture is blue, but yours should be red) 

Step 10

Locate the pair of Nano Sockets, and the pair of DF Player sockets.  Install them into the slots labeled NANO and U1.

Step 11

Locate the Potentiometer and install it into the slot labeled RV1.

Step 12

 Locate the speaker and solder it into the slot labeled speaker.  Make sure that its + and - pins match the orientation of the label on the board.

Step 13

Locate your 4 pin clock socket, and install it into the slot labeled J1.  Make sure to bend the pins so that they form a right angle with the socket pointed toward the display module label.


Step 14

Locate your pair of Arduino pin headers and Arduino Nano.  Insert the longer pins of the header into the Arduino Nano sockets, then place the Arduino Nano on top of the headers.  Solder the pins to the Nano

Step 15

Insert your DF Player into the DF Player sockets, then take your adhesive pad and apply it to the rectangle surrounding the display module label.  Afterward insert your clock face into the clock face header, then insert your button cell battery into the battery connector on the back of the board.