It is a Mini-Clock Creative Electronic Design Electronic Clock DIY Kit. Its LED digital tube display screen is the same size to PCB.It uses a unique LED digital tube display.There are 5 display cells which are used to display seconds at the top and bottom.The green number is displayed in the middle of the display, and the upper and lower rows show red.
1>.Hours/Minutes/Seconds automatically switch display
2>.Matte LED display
3>.Hour and half hour alarm function
4>.High-precision clock display
1>.Work Voltage:DC 4.5V~5.5V
3>.Work Module:Automatic Control
1>.Step 1: Automatically display Time in H:M and :S in turn after power ON. The LED blocks in the upper and lower rows will move automatically, and the movement mode will be changed automatically within 10 seconds.
2>.Step 2: The 1st button away from the USB socket.
3>.Step 3: Short press the 1st button to set turn ON/OFF hour and half hour alarm function.
4>.Step 4: Short press the 2nd button to turn ON/OFF hour and half hour alarm function
5>.Step 5: Short press the 1st button to return to clock display.
6>.Step 6: Long press the 1st button enter set time mode by press the 1st button more then 3second.Then the 2bit Hour screen will flashing.
7>.Step 7: Press press the 2nd button to change time value.The number can only increase, not decrease. After completing a cycle, count again.
8>.Step 8: Short press the 1st button to set minute.
9>.Step 9: Same method to set minute and second.
10>.Step 10: Double click the 1st button after set time and return to clock display.
11>.Step 11: Long press the 2nd button to set the moving mode of the LED moving block.
1>.Training welding skills
1>.User needs to prepare the welding tool at first.
2>.Please be patient until the installation is complete.
3>.The package is DIY kit.It need finish install by user.
4>.The soldering iron can't touch the components for a long time(1.0 second), otherwise it will damage the components.
5>.Pay attention to the positive and negative of the components.
6>.Strictly prohibit short circuit.
7>.This DIY installation is more difficult to be installed, please be patient until the installation is complete!!!
8>.User must install the LED according to the specified rules.Otherwise some LED will not light.
9>.Install complex components preferentially.
10>.Make sure all components are in right direction and right place.
11>.Check that all of the LED can be illuminated.
12>.It is strongly recommended to read the installation manual before starting installation!!!
13>.The default code inside the chip, the function is more abundant,So please do not update the code inside arbitrarily!
7.Installation Steps(Please be patient:)
1>.Step 1: Install 8pcs 120ohm(121) 0805 SMD Resistor at R1-R8.
2>.Step 2: Install 1pcs 20Kohm(203) 0805 SMD Resistor at R9.
3>.Step 3: Install 5pcs 1Kohm(102) 0805 SMD Resistor at R10-R14.
4>.Step 4: Install 3pcs 30pF 0805 SMD Capacitor at C1-C3. Note: The C3 is on the other side of PCB.
5>.Step 5: Install 6pcs SOT-23 S9012 Transistor at Q1-Q6.
6>.Step 6: Install 1pcs 12MHz Crystal oscillator.
7>.Step 7: Install 1pcs MINI USB Female Socket on another side of PCB.
8>.Step 8: Install 1pcs DIP-20 STC11F02E-35I.There is a dot on one corner of the IC and there is a mark on PCB where the IC can place on.These two marks are corresponding to each other and are used to specify the installation direction of the IC.Note:It is on the other side of PCB.
9>.Step 9: Install 2pcs 6*6mm Black Button.
10>.Step 10: Install 1pcs Buzzer on the same side to IC.
11>.Step 11: Install 1pcs 4Bit Digital Tube Display on the same side to IC.
12>.Step 12: Connect to power supply and enjoy the clock.
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