1. Introdução
This manual provides detailed instructions for the installation, operation, and maintenance of the GODIYMODULES 4 Bit 0.36 inch Mini Digital Voltmeter. This device is designed for accurate DC voltage measurement within a range of 0.000V to 100.0V. Please read this manual thoroughly before use to ensure proper functionality and safety.
2. Recursos do Produto
- Vol de alta precisãotage medição.
- Clear 0.36 inch 4-digit LED display.
- Compact size for easy integration into various projects.
- Grande volume operacionaltagfaixa (4-30V DC).
- Fast refresh rate of 3 times per second.
3. Conteúdo da embalagem
Cada pacote contém os seguintes itens:
- 3 x Mini Digital Voltmeters (1 Red, 1 Green, 1 Blue LED display)
Image 3.1: Three mini digital voltmeters included in the package, featuring red, green, and blue LED displays.
4. Especificações
| Faixa de medição | CC 0.000 V - 100.0 V |
| Modo de exibição | 0.36 inch 4-digit LED digital tube |
| Vol operacionaltage | DC 4V - 30V (Recommended: 5V - 12V) |
| Consumo de energia | ≤20mA |
| Taxa de atualização | 3 vezes / segundo |
| Precisão do teste | 0.3% (Maximum error = Range x 0.003) |
| Dimensões do produto | 40.53 mm × 14.43 mm × 10.68 mm |
| Abertura de montagem | 2.9 mm |
| Comprimento do cabo | 20cm |
Image 4.1: Detailed dimensions of the voltmeter module and its wiring diagram.
5. Configuração e fiação
The voltmeter features a 3-wire connection system. Proper wiring is crucial for correct operation and to prevent damage to the device.
5.1 Wire Definitions
- Fio vermelho: Working Power Positive (Connect to the positive terminal of the power supply for the voltmeter itself, typically 4-30V DC).
- Fio preto: Common Negative (Connect to the negative terminal of both the working power supply and the circuit being measured).
- Fio Azul: Test Power Positive (Connect to the positive terminal of the voltage source you wish to measure, 0-100V DC).
5.2 Diagrama de fiação
Consulte o diagrama abaixo para as conexões de fiação corretas:
Image 5.1: Wiring diagram illustrating the connection of the red, black, and blue wires to the meter power and test power sources.
Importante: Certifique-se de que o volume operacionaltage for the voltmeter (Red and Black wires) is within the 4-30V DC range. The voltage being measured (Blue and Black wires) can be up to 100V DC. Connect the black wire to the common ground of both power sources if they are separate.
5.3 Calibration Fine-Tuning
The voltmeter includes a calibration fine-tuning potentiometer on the PCB. If minor adjustments to the reading accuracy are required, use a small screwdriver to carefully turn the potentiometer. This should only be done if you have a known accurate voltage reference for comparison.
Imagem 5.2: View of the voltmeter's circuit board, highlighting the calibration fine-tuning component.
6. Operação
Once properly wired and powered, the voltmeter will automatically display the measured DC voltage on its 4-digit LED screen. No further user interaction is typically required for basic voltage monitoramento.
- O display mostrará o volumetage in Volts (V) with three decimal places for precision (e.g., 12.345V).
- Ensure the measured voltage does not exceed 100.0V DC to prevent damage.
Imagem 6.1: Examples of the voltmeter in operation, displaying readings with red, green, and blue LED colors.
7. Solução De Problemas
- Nenhuma exibição:
- Check if the working power supply (Red and Black wires) is connected correctly and providing 4-30V DC.
- Ensure the black wire is properly connected to the negative terminal.
- Verifique se a fonte de alimentação está ativa.
- Incorrect Reading:
- Confirm that the blue wire is connected to the correct positive terminal of the voltage source being measured.
- Ensure the black wire is common to both the meter's power and the measured voltage fonte.
- If a slight offset is observed, use the calibration fine-tuning potentiometer (refer to Section 5.3) with a known accurate reference.
- Verify the measured voltage está dentro da faixa de 0-100V CC.
- Tela cintilante:
- Check for unstable power supply to the voltmeter (Red and Black wires).
- Ensure connections are secure and free from intermittent contact.
8. Manutenção
The GODIYMODULES Mini Digital Voltmeter is designed for low maintenance. Follow these guidelines to ensure longevity:
- Mantenha o dispositivo limpo e livre de poeira e umidade.
- Avoid exposing the voltmeter to extreme temperatures or direct sunlight.
- Do not apply excessive force to the wires or the PCB.
- Store in a dry, cool environment when not in use.
9. Garantia e Suporte
For warranty information or technical support, please contact your retailer or the manufacturer, GODIYMODULES. Keep your purchase receipt as proof of purchase.
Manufacturer: GODIYMODULES
Part Number: 4Bit-036-001