Colpitts Oscillator Frequency Meter Kit with Arduino Uno + LED
Colpitts Oscillator Frequency Meter Kit with Arduino Uno + LED – Build a Precision LC Meter
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Tired of your multimeter's vague capacitance reading? Build a dedicated frequency meter from a Colpitts oscillator. Insert an unknown inductor or capacitor into the LC tank, and the Arduino measures resonant frequency to compute the value precisely. An essential tool for every electronics bench.
What You'll Build
You'll assemble a Colpitts oscillator on a prototype PCB, interface it with an Arduino Uno, and display the measured frequency and calculated L or C on a crisp OLED screen. The finished instrument reads inductors from microhenries to millihenries and capacitors from picofarads to microfarads.
What You'll Learn
- Build and tune a Colpitts LC oscillator with transistors and Schmidt trigger for stable oscillation
- Program Arduino’s frequency counter library to capture high‑speed pulses from the oscillator output
- Calculate inductance or capacitance from resonant frequency using the LC tank formula and code calibration
- Integrate an I2C OLED display and menu to switch between L and C modes
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| 74HC14 Schmidt Trigger | 1 |
| 2N2222 Transistor | 2 |
| 0.96in OLED Display | 1 |
| Capacitor Assortment Kit | 1 |
| 10kΩ Resistors | 5 |
| PCB Prototype Board | 2 |
| 9V Battery Snap | 1 |
| Soldering Iron | 1 |
| Solder Wire | 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 intermediate-level kit is designed for CBSE Class 11-12 students working on physics investigatory projects, B.Tech ECE/EEE undergraduates building lab instruments, and participants in the Smart India Hackathon who need a reliable LCR measurement module. It’s equally valuable for ATL Tinkering Labs and hobbyists at IIT, NIT, VIT, and BITS Pilani who want a dedicated frequency meter on their workbench.
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 to access an AI guide for each wiring step and code upload. WhatsApp help is available within hours.
Can I measure both inductance and capacitance with this kit?
Yes. The OLED menu lets you select “L” or “C” mode. The Arduino calculates the unknown value based on the known reference component included in the kit, so you can measure any unmarked coil or capacitor.
Does this kit require an external frequency counter or oscilloscope?
No. The Arduino’s internal timer acts as a frequency counter. Everything is self-contained; you only need a USB cable to upload the code and a 9V battery to power the oscillator.
Is soldering experience necessary?
Basic soldering skills are required to assemble the prototype board. The kit includes a soldering iron and solder wire, and the AI companion includes video segments on soldering components safely.
Builds a Colpitts LC oscillator. Frequency counter measures resonant frequency to calculate unknown L or C.
What's in this kit
- Arduino Uno R3
- 74HC14 Schmidt Trigger
- 2N2222 Transistor x2
- 0.96in OLED
- Capacitor Assortment Kit
- 10kΩ Resistors x5
- PCB Prototype Board x2
- 9V Battery Snap
- Soldering Iron
- Solder Wire
Choose your assembly option:
- Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
- Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.
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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