Description:
Kit Name: Alcohol Concentration Tester Kit
Kit Name: Alcohol Concentration Tester Kit
Dimensions: 62*36mm
Board material: single side 1.6mm FR-4
Supply voltage: DC6V
Soldering precautions:
1. Printed on the PCB with various components silk screen marks, please refer to the silk screen mark soldering
2. The resistance is not divided, but there are different resistance values. Please pay attention to distinguish when soldering
3. J1, J2, J3 need short circuit, and the resistor element pin can be cut to solder
4. Electrolytic capacitor, LED is positive and negative, long leg is positive, short leg is negative
5. When connecting the power cord to the terminal block, be careful to distinguish between the positive and negative terminals
Package included:| Name | Parameter | PCB mark | Quantity |
| Alcohol concentration sensor | MQ-3 | MQ | 1 |
| Resistor | 1K | R1,R2 | 2 |
| 120ohm | R3 | 1 | |
| 4.7ohm | R4 | 1 | |
| Diode | 5mm red LED | D1 | 1 |
| 5mm green LED | D2 | 1 | |
| Power socket | 005 | with USB cable | 1 |
| Corner toggle switch | S1 | 1 | |
| IC socket | DIP8 | U1 | 1 |
| NE555 | DIP8 | U1 | 1 |
| Buzzer | B1 | 1 | |
| Potentiometer | 103 | RW | 1 |
| Zener diode | 1N4148 | D3 | 1 |
| Relay | D5V6 pin | JK | 1 |
| Battery socket | 1 |
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