DVM Discovery Board

Digital Voltmeter Experimenter & Design PCB

 
The DVM Discovery Board allows students, engineers and DIYers to quickly build and learn key voltage measuring concepts and circuits. Hands-on prototyping and experimenting boosts understanding and intuition!

• Easy-to-use Experimenter Board.
• Circuit Options
  • 1 to 3 Customizable Voltage Ranges
  • Unipolar (+ input only) or Bipolar (+ / - input)
  • Precision Mode (Vref option)
• Manual Push-button or Auto Range Select
• Simple interface to the Arduino UNO (or other MicroController).
• C Code Examples - modify, expand!
• Excel Design Calculator - gains, RC values, resolution, settling time.

Flexible Hands-On Learning

You can quickly build and explore many measurement options. The yellow boxes below show the solderless headers for easy component changes.

Building Blocks

Start with the basic circuit blocks

• Input Divider (2 Ranges)
• Low-Pass Filter
• Push-Button

You can add blocks for your project

• Amplifier (additional range)
• Negative Rail (bipolar input)
• Voltage Reference (precision mode).

 

Micro-Controller & C Code

The DVM discovery easily interfaces to a MicroController Bd like the Arduino UNO.

Run the code for the Basic or Advanced Voltmeter. Here's the basic code flow.

Upload and edit code with the Interactive Development Environment (IDE) of the Arduino. Modify or customize for your project.

Arduino UNO Code

• Basic ( 2-Range, Unipolar Input ):  DVM_discovery_basic_1.ino
• Advanced ( 3-Range, Bipolar Input ):  DVM_discovery_3range_bipolar_1.ino

 

User's Guide

User's Guide (PDF)

• Quick Start Guide
• Description, Schematics, BOM
• DVM Examples: Basic and Advanced
  

Open-Source Project

This op amp trainer board is Open Source - anyone can inspect, make, modify and distribute the project.

• Download PDFs and KiCAD files (schematic, PCB, etc.) available from Github (available soon).

Excel Op Amp Design Calculator

Here's an Excel Toolkit of Design & Analysis Calculations created for hands-on experimenting. Apply, modify or customize as needed!

 - Input Divider and Amplifier Gains
 - Low-Pass Filter frequencies
 - Scale and Shift network
 - ADC Conversion and Resolution

Feedback Form

• What do you find helpful?
• Other comments, suggestions?
• Use the eCircuit Center Contact Form.