GODIYMODULES 4 Bit 0.36 inch Mini Digital Voltmeter User Manual

1. はじめに

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 製品の特徴

• 高精度巻tag測定。
• Clear 0.36 inch 4-digit LED display.
• Compact size for easy integration into various projects.
• ワイドオペレーティングボリュームtage 範囲 (4 ～ 30V DC)。
• Fast refresh rate of 3 times per second.

3. パッケージ内容

各パッケージには、次のアイテムが含まれています。

• 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. 仕様

Image 4.1: Detailed dimensions of the voltmeter module and its wiring diagram.

5. セットアップと配線

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

• 赤いワイヤー: Working Power Positive (Connect to the positive terminal of the power supply for the voltmeter itself, typically 4-30V DC).
• 黒ワイヤー: Common Negative (Connect to the negative terminal of both the working power supply and the circuit being measured).
• 青いワイヤー： Test Power Positive (Connect to the positive terminal of the voltage source you wish to measure, 0-100V DC).

5.2 配線図

正しい配線接続については、下の図を参照してください。

Image 5.1: Wiring diagram illustrating the connection of the red, black, and blue wires to the meter power and test power sources.

重要： 動作ボリュームがtage 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.

画像5.2: View of the voltmeter's circuit board, highlighting the calibration fine-tuning component.

6. 操作

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モニタリング。

• ディスプレイにボリュームが表示されますtage 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.

図6.1: 例amples of the voltmeter in operation, displaying readings with red, green, and blue LED colors.

7。 トラブルシューティング

• 表示なし:
  • 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.
  • 電源がアクティブであることを確認します。
• 誤った読み方:
  • 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 voltag電子ソース。
  • 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 は 0 ～ 100V DC の範囲内です。
• ちらつくディスプレイ:
  • Check for unstable power supply to the voltmeter (Red and Black wires).
  • Ensure connections are secure and free from intermittent contact.

8. メンテナンス

The GODIYMODULES Mini Digital Voltmeter is designed for low maintenance. Follow these guidelines to ensure longevity:

• デバイスを清潔に保ち、ほこりや湿気を避けてください。
• Avoid exposing the voltmeter to extreme temperatures or direct sunlight.
• Do not apply excessive force to the wires or the PCB.
• 使用しないときは乾燥した涼しい環境に保管してください。

9. 保証とサポート

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