Smart Baby Monitor with Cry Detect
Smart Baby Monitor with Cry Detection – Arduino Nano Wireless Alert System
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit lets you construct a complete smart infant monitor that actively listens for distress cries, tracks nursery temperature, and instantly alerts a remote parent unit via a dedicated radio link. Perfect for B.Tech final‑year projects, Smart India Hackathon prototypes, or any advanced maker exploring reliable home automation. All components are consolidated into one shipment so you can focus on the build, not on chasing multiple sellers.
What You'll Build
You will create two Arduino Nano‑based modules: a nursery transmitter equipped with the MAX4466 mic amplifier and DS18B20 temperature probe, and a parent receiver with a 0.96‑inch OLED display and an active buzzer. When the transmitter detects a cry pattern—through onboard signal analysis—it instantly pings the receiver, which shows the alert and sounds the buzzer. Room temperature is also displayed continuously on the parent unit, giving you a dual‑function safety monitor.
What You'll Learn
- How to interface the MAX4466 microphone amplifier and implement real‑time cry pattern recognition on Arduino Nano
- Wireless data transmission with NRF24L01 modules, including pairing, channel selection, and range optimisation
- Interfacing the DS18B20 digital temperature sensor, calibrating readings, and displaying them on an OLED screen
- Designing a low‑power, event‑driven wireless sensor network that remains stable across rooms
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 2 |
| MAX4466 Mic Amp | 1 |
| DS18B20 Probe | 1 |
| NRF24L01 | 2 |
| Active Buzzer | 1 |
| 0.96in OLED | 1 |
| 10kΩ Resistors | 10 |
| 4.7kΩ Resistors | 5 |
| 100nF Caps | 10 |
| 9V Battery Snap | 2 |
| PCB Prototype Board | 2 |
| 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 building capstone projects, Smart India Hackathon teams prototyping child safety solutions, and advanced hobbyists from IITs, NITs, VIT, or BITS Pilani. ATL Tinkering Lab educators running senior‑level workshops will find this kit a reliable, all‑in‑one package for demonstrating embedded systems and wireless sensor networks.
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 inside the box to access your custom AI companion, or WhatsApp us directly — our team will guide you through the specific step until your monitor works.
How does the cry detection distinguish a real cry from background noise?
The MAX4466 captures audio into the Arduino Nano, which runs a real‑time pattern‑matching algorithm tuned to the frequency and envelope characteristic of infant cries. The example code included lets you adjust sensitivity.
Can I add Wi‑Fi instead of NRF24L01 for smartphone alerts?
This kit is optimised for NRF24L01 low‑latency radio. The build companion includes notes on swapping to an ESP8266 module if you already have one, but you’ll need to adapt the code and power supply yourself.
Is the included soldering iron beginner‑friendly?
The 25W iron is straightforward to use; build instructions explain safe handling, tip tinning, and joint techniques. Suitable for someone with basic soldering experience, and covered in the companion guide.
MAX4466 detects cry pattern. NRF24L01 alerts parent unit. DS18B20 monitors room temperature.
What's in this kit
- Arduino Nano x2
- MAX4466 Mic Amp
- DS18B20 Probe
- NRF24L01 x2
- Active Buzzer
- 0.96in OLED
- 10kΩ Resistors x10
- 4.7kΩ Resistors x5
- 100nF Caps x10
- 9V Battery Snap x2
- PCB Prototype Board x2
- 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.
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