Tools you need： Precautions: : One minute electronic timer kit instructions ①Iron (30W) ④T weezers ①Check part values & quantities against part list ETI -60 ②Solder wire ②Always meter resistor values before soldering Rev.1.0 April 4, 2018 Produced by YiQi ③Multimeter ⑤Wire cutters ③Understand all part polarities and orientations 1.Install RES and Diode： 2 .Install Triode: 3 .Install Ceramic capacitance and electrolytic capacitor： Warning: Install the resistance on the circuit Install four S8050 triode tubes to Q1-Q4 C2、C5=104pF Ceramic capacitance, The long foot of the electrolytic capacitor is the positive pole. board by referring to the shipping list C4=220uF,C1、C3=10uF electrolytic capacitor Welding on the square pads on the circuit board Pay attention to the Long foot is a positive pole， positive and negative positive electrode direct ion of the diode Welding in square Welding to square pad！ pad One minute electronic timer component list 物N料O.清单: Name Parameter QTY 4 .Install Self-locking switch： 5 .Install Button switch： 6 .Install Buzzer R4 RES 470R 1 to S1 and S4 Install Self-locking switch Install Button switch to S2 and S3 Pay attention to the disti nction R3 RES 1K 1 Pay atte ntion to the direction of installation between positive and negative poles R1 RES 6.8K 1 R6.R7.R9 RES 10K 5 R10.R11 R5.R8 RSE 22K 2 R2 RES 68K 1 C2.C5 CAP 104P 2 C1.C3 E.CAP 10uF 2 C4 E.CAP 220uF 1 D1---D61 LED 3mm 61+ U4 IC CD4069 1 7 .Install I.C 8 .Install Power supply socket: 9 .Install LED U2.U3 IC CD4017 2 Pay attention to the direction of IC Refer to the diagram below, install Long foot is a positive pole， U5 IC NE555 1 Gap corresponds to the gap of printed circuit board the power socket on the CN1 of the circuit board. Welding to square pad！ Q1---Q4 Triode S8050 4 Fix the socket with the pin of the element D62 Diode 1N4148 1 According to the ) + d ( a S2.S3 Button switch 6*6*9mm 2 p screen printing on K A e r S1.S4 Self-locking switch 6P 2 a u the circuit board, q SPK1 Buzzer 5V 9*12 1 s install IC on the CN1 Power supply socket DC3.5mm 1 circuit board —— PCB ETI-60 1 —— USB power cable 100cm 1 Page 1 1 2 3 4 4 R3 5 D61 C5 6 S1B P-LED 1K S1A Pause-LEVDCC 104P 1 R6 PAUSE D 2 D VCC 10K H 3 R1 N I 4 8 6.8K CLOCK RST COUT U1 4 5 3 2 1 1 1 1 T C S 7 C U3 DIS R R2 V T T K H S U 68K 2 3 C N I TR OUT E O O VCC - R L C D F 6 1Hz Signal 16 C 8 TH N VCC GND E G R C1 NE555 0 1 2 3 4 5 6 7 8 9 10uF Q Q Q Q Q Q Q Q Q Q 1 5 C2 CD4017 104P 3 2 4 7 0 1 5 6 9 1 1 1 C C VC6 C 1 D1 D2 D3 D4 D5 D6 D7 D8 D9 D10 VCC U2 3 9 8 C Q0 U4D C R9 R8 R11 C3 V 10K 22K 10K COUT 14 2 11 U4E 10 10uF CLOCK Q1 D11 D12 D13 D14 D15 D16 D17 D18 D19 D20 4 1 2 S3 Q2 U4A R10 RST 7 3 4 Q3 U4B 10K Q4 RST 15 REST D21 D22 D23 D24 D25 D26 D27 D28 D29 D30 STOP S8050 105 6 Q4 U4C Q3 S8050 1 13 U4F 12 B Q5 D31 D32 D33 D34 D35 D36 D37 D38 D39 D40 B CD4069 S2 13 5 INH Q6 START R5 Q7 6 D41 D42 D43 D44 D45 D46 D47 D48 D49 D50 22K CLOCK 9 Q8 12 D Q1VCC C-OUT N 11 D62 1 G Q9 D51 D52 D53 D54 D55 D56 D57 D58 D59 D60 S8050 1N4148 2 SPK1 CD4017 R4 8 470R R7 Q2 S8050 C4 10K VCC S4 220uF 4 1 CN1 Title POWER 1 A U4G 2 A CD4069 DC5V Size Number Revision 7 B Date: 4-Apr-2018 Sheet of File: E:\longyong.ddb Drawn By: 1 2 3 4 Page 2.