pH Meter with Arduino Uno - pH 0-14 & Classification Kit
Build a pH Meter with Arduino Uno - Measure 0-14 pH and Classify Acid, Neutral, Alkaline
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Turn your curiosity about acidity and alkalinity into a working digital pH meter. Dip the probe into water samples, soft drinks, or soil slurries and instantly see the pH value on a bright LCD, along with a clear acid, neutral, or alkaline label. This hands-on project is perfect for science exhibitions, environmental studies, or just exploring everyday chemistry.
What You'll Build
You'll assemble a fully functional pH meter that reads pH from 0 to 14 with precision. The Arduino Uno processes the analog signal from the pH module and displays the numeric reading on a 16x2 LCD while lighting up the correct classification: Acidic (pH under 7), Neutral (pH equal to 7), or Alkaline (pH above 7). The I2C backpack keeps wiring minimal and the breadboard layout tidy.
What You'll Learn
- Connect an analog pH sensor module to Arduino Uno and interpret voltage changes
- Convert raw sensor readings into accurate pH values using calibration formulas
- Interface a 16x2 LCD with an I2C backpack to display real-time sensor data
- Write conditional logic in Arduino code to automatically classify solutions as acid, neutral, or alkaline
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| Analog pH Meter Module | 1 |
| 16x2 LCD | 1 |
| I2C Backpack | 1 |
| 10k? Resistors | 5 |
| 400-pt Breadboard | 1 |
| M-M Wires | 20 |
| 9V Battery Snap | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This starter kit is ideal for CBSE students (Class 6 to 12) diving into science projects that blend chemistry and electronics. ATL Tinkering Lab members can use it to prototype environmental sensors, while young hobbyists age 8 and above get a gentle introduction to Arduino programming. It's also a practical first sensor-interfacing assignment for first-year B.Tech ECE and EEE students.
Built and Backed by Compoden
Every Compoden kit ships with an AI build companion trained on this exact project - accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.
What if I get stuck during the build?
Open the AI companion through the QR code on the box; it provides step-by-step visuals specific to this pH meter. For extra help, our team is available on WhatsApp to guide you.
Can this kit measure the pH of soil or drinking water?
Yes, the probe works with any aqueous solution or moist soil sample. It's commonly used for water quality testing, hydroponics, and school agriculture projects.
Do I need to know programming before starting?
No prior experience is needed. The kit includes a pre-written Arduino sketch that you upload directly, and the AI companion explains the code so you learn as you build.
Is this suitable for a CBSE science exhibition?
Absolutely. Many students use this kit to demonstrate pH measurement concepts and real-time classification. The LCD output and clear acid/base logic make it a standout exhibit.
Analog pH probe and module reads 0-14 pH and shows value on LCD with acid/neutral/alkaline classification.
What's in this kit
Other projects you can build
Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items