There are 8 kinds of LED:
Blue digital tube+ Red & Blue LED with housing.
Blue digital tube+ Red & Green LED with housing.
Blue digital tube+ Red & Blue LED without housing.
Blue digital tube+ Red & Green LED without housing.
Red digital tube+ Red & Blue LED with housing.
Red digital tube+ Red & Green LED with housing.
Red digital tube+ Red & Blue LED without housing .
Red digital tube+ Red & Green LED without housing.
Green digital tube+ Red & Blue LED with housing.
Green digital tube+ Red & Green LED with housing.
Green digital tube+ Red & Blue LED without housing.
Green digital tube+ Red & Green LED without housing.
Description:
Size:
With housing: 93 x 93 x 26 mm.
Without housing: 81 x 81 x 2 mm.
PCB thickness: 1.6 mm.
Materials: FR4 military level.
Operating voltage: DC5V.
Function:
Alarm clock: You can set the alarm for the length of time, and the music.
The whole point timekeeping: You can set the whole point of timekeeping, and the music.
There are 7 kinds of music you can set:
A. "D""D""D""D" ( Default alarm tone ) .
B. Broadcast timekeeping ( The whole point timekeeping default ringtone ).
C. Jasmine ( Chinese music ).
D. For Elise.
E. Kanon.
F. Give a little Time to Your Love ( Richard Clayderman).
G. BBK ( Chinese music ).
Welding note:
1, P1 for the development of the interface, not welding.
2, component identification:
Components with no positive or negative polarity: Resistance (R1~R15) , Thermistor(RT1), Ceramic capacitors
( C4 , C5 ), Monolithic capacitor (C2 , C3 ), Crystal oscillator (Y1) , Keys (S1, S2).
Distinguishing positive and negative element:LED(D1~D60),Battery seat(BT1),Electrolytic capacitor(C1),
Buzzer(LS1),These element should be note that the positive and negative poles of the circuit board are to be note.
Other multi pin element:IAP15W413AS ( U1), DS1302( U2), S8550( Q1 ), Block USB (USB1), These
element should be note in the same direction as the circuit board.
3,Positive welding LED, digital tube, Thermistor, and other components of the welding in the back.
4,LED has two colors, the less number of color welding in a large number of corresponding position, and the rest of the
location of a number of more than one color.
5,U2, C4, C5, Y1, BT1 must be welded before the digital tube, pay attention to the points on the digital tube.
6,The working voltage of the kit is 5V, the battery on back is only for the power down save time.
Schematic circuit:
Package included:
1 x Upgrade DIY EC1515A DS1302B Rotation LED Electronic Clock Kit 51 Learning Board
