Arduino Osmosis Rate Study Kit: Log Mass Change & Plot Osmotic Rate
Arduino Osmosis Rate Study Kit: Measure Potato Mass Change & Plot Osmotic Rate with OLED
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Build an instrument that measures the osmotic rate of potato slices immersed in different salt concentrations. Using a sensitive load cell and HX711 amplifier, you'll precisely track mass loss or gain over time. The Arduino logs data to microSD and displays real-time osmotic rate on the OLED screen, turning a classic biology experiment into a quantitative investigation.
What You'll Build
Construct a benchtop osmotic rate monitor with a 1 kg load cell, Arduino Uno, and a 128x64 OLED. Calibrate the sensor to record subtle mass changes as water moves across cell membranes. Generate CSV data files on a microSD card that you can plot in Excel or Google Sheets to visualise concentration-dependent osmosis.
What You'll Learn
- Calibrating a load cell with an HX711 amplifier for precise mass measurement.
- Writing Arduino code to timestamp readings using a real-time clock (DS3231).
- Logging sensor data to microSD and formatting it for biological analysis.
- Interpreting osmotic rate as a function of salt concentration using data visualisation.
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| HX711 + 1kg Load Cell | x1 |
| DS3231 RTC | x1 |
| MicroSD Module | x1 |
| 0.96in OLED | x1 |
| 10k? Resistors | x5 |
| 100nF Caps | x5 |
| 400-pt Breadboard | x1 |
| M-M Wires | x20 |
| 9V Battery Snap | x1 |
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
Ideal for CBSE Class 11-12 students completing biology investigatory projects that require quantitative measurement. Also suitable for B.Tech ECE/EEE students building bioinstrumentation prototypes, ATL tinkering labs exploring sensor applications, and Science Olympiad participants who need logged data for analysis.
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?
Scan the QR code on the kit box to open the AI companion; it has been trained on every step of this project. If you still need help, message us on WhatsApp and a human engineer will reply.
Can this kit be used for other mass measurement experiments?
Yes, the calibrated load cell can measure any force up to 1 kg. You can adapt the code for physics experiments like Hooke's law, friction studies, or even a simple digital weight scale.
Do I need soldering to assemble this kit?
No soldering is required. All connections are made on the included 400-point breadboard using male-to-male jumper wires.
How accurate is the mass measurement?
After a brief calibration with known weights, typical accuracy is �0.1 grams. This resolution is sufficient to observe osmotic mass changes over a period of hours.
Load cell tracks mass change of potato slices in different salt concentrations. Plots osmotic rate.
What's in this kit
- Arduino Uno R3
- HX711 + 1kg Load Cell
- DS3231 RTC
- MicroSD Module
- 0.96in OLED
- 10k? Resistors x5
- 100nF Caps x5
- 400-pt Breadboard
- M-M Wires x20
- 9V Battery Snap
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