Atomic Clock GPS Frequency Standard Kit with Arduino Uno + LED
Build a GPS-Disciplined Atomic Clock Frequency Standard with Arduino Uno
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
With this kit, you’ll assemble a GPS-disciplined frequency standard that lets you compare and calibrate oscillator stability against the atomic clocks aboard GPS satellites. Use the PPS signal from the NEO-6M module to discipline a DS3231 RTC, log frequency drift on a microSD card, and visualize real-time stability on an OLED display. This is not a simple clock build — it’s a precision measurement instrument used in research labs and advanced engineering projects.
What You'll Build
A fully functional GPS-disciplined frequency standard that outputs a highly stable 1 PPS signal, logs time deviation data, and displays frequency error on an OLED screen. You’ll have a lab-grade reference to test the accuracy of other oscillators, quartz crystals, or even your own DIY timekeeping circuits.
What You'll Learn
- Disciplining an RTC with a GPS 1 PPS signal to maintain microsecond-level accuracy
- Measuring and logging oscillator drift using an ADS1115 16-bit ADC
- Interfacing multiple I2C devices (DS3231, ADS1115, OLED) on an Arduino shield
- Understanding Allan deviation and frequency stability concepts for precision timing
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | 1 |
| NEO-6M GPS | 1 |
| DS3231 RTC | 1 |
| ADS1115 ADC | 1 |
| DS3231 RTC | 1 |
| MicroSD Module | 1 |
| 0.96in OLED | 1 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| 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
Designed for B.Tech ECE/EEE students tackling final-year projects in precision timing, GPS signal processing, or frequency metrology. Ideal for Smart India Hackathon teams needing a stable time base for sensor fusion or data logging, and for IIT/NIT/VIT/BITS research labs requiring a low-cost frequency reference. Also suited for advanced hobbyists with soldering experience who want to explore time-nuts grade projects.
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 box to access the AI companion trained on this project, or reach out via WhatsApp for direct support from our engineers in Bengaluru.
Can I use this kit to calibrate my signal generator's frequency accuracy?
Absolutely. Once assembled, the GPS-disciplined 1 PPS output serves as a reference with microsecond stability, allowing you to measure and correct your signal generator's timebase drift over extended periods.
What software and programming knowledge do I need?
The Arduino code is provided and commented, but you should be comfortable uploading sketches and modifying timing parameters. A basic understanding of I2C communication and serial monitoring is helpful, though not mandatory.
Why are there two DS3231 RTC modules in the kit?
One DS3231 serves as the temperature-compensated crystal oscillator under test, while the second one acts as the reference clock being disciplined by the GPS PPS signal. This dual-clock setup lets you directly measure and compare drift.
GPS PPS signal disciplined DS3231 provides frequency standard for comparing oscillator stability.
What's in this kit
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