Project Hub /Test & Measurement Instrumentation/Sensors & Signal Measurement Tools/Wi-Fi Analysing Smart Watch

Intermediate

ESP8266

Project Specific

3 – 6 Hours

Partial Kit

Wi-Fi Analysing Smart Watch

A custom DIY smart watch built around the ESP12F chip designed to analyze Wi-Fi networks, signal strengths, and help engineers set up routers.

Originally published on ElectronicsForU

View original tutorial

Parts You'll Need

This project is sourced from another site, not written by us — this list is our best match of their components against what we stock, not a verified bill of materials. Always check the original blog (linked above) for the actual parts list before buying.

10pcs 5mm RED Diffused Light Emitting Diodes - LEDs Set Rs. 39.00
10pcs - 220 ohm 1/4 W Resistor Set Rs. 39.00
Jumper Wire 10 Pin Male To Male 20cm Rs. 45.00
Cable for Arduino Nano (USB 2.0 A to USB 2.0 Mini B) 30cm Rs. 69.00
2-Slot 18650 Holder with Protective Cover and On/Off Switch – Case Rs. 109.00
400 Points Mini Solderless Prototype PCB Breadboard High Quality Rs. 89.00
MB102 Adjustable Breadboard Power Supply Module (3.3V & 5V) for Arduino & Raspberry Pi Rs. 139.00
Jumper Wire 10 Pin Male To Female 20cm Rs. 45.00

Selected: Rs. 0.00

This list includes a generic resistor set as a placeholder — it is not matched to the exact value or part number this circuit needs. The correct one is specified on the original source page linked above; check it before buying.

We don't carry yet: Battery (generic / unspecified)
LCD (generic / unspecified)
Microcontroller IC (DIP) / Chip
Capacitors
Enclosure / Box / Case

Browse all components

How It Works

The Wi-Fi Analysing Smart Watch is a wearable test and measurement instrument built around the ESP12F SMD Wi-Fi SoC chip, which handles both wireless network scanning and system processing. Power is supplied by a compact 3.3V microsize battery, managed by an MCP73812T battery charging IC connected to an SMD micro USB female port for recharging. Users can control power flow using an SMD slide switch, while a 2-pin jumper facilitates circuit configuration. Visual output is delivered through a GC9A01 Round LCD Display, driven alongside indicator components including an SMD LED, current-limiting resistors (470Ω, 2kΩ, and 100Ω), and a 4.7µF decoupling capacitor to stabilize power rails. All of these electronics are housed inside a custom 3D printed case to create a portable diagnostic wearable. The ESP12F scans surrounding radio frequencies, processes signal metrics, and renders real-time Wi-Fi data graphically onto the round LCD screen, allowing engineers to visualize network environments directly from their wrist.

Why Build This

Portable diagnostic tool for network engineers to assess signal strength and optimize router placement in the field

Wearable instrumentation platform for conducting localized wireless security analysis

Practical engineering project integrating surface-mount design, power management, and custom 3D-printed enclosures

Real-World Application

Useful for network engineers setting up Wi-Fi routers, identifying the strongest signal spots, and as a portable diagnostic tool for security analysis.

Skills You'll Learn

Surface-mount device soldering

embedded Wi-Fi scanning

battery management circuit integration

display interface integration

power regulation and decoupling

Safety Precautions

Flagged during content review — not in the original source

This project uses a lithium-based microsize battery and an MCP73812T charging IC; ensure correct polarity during assembly and avoid short-circuiting the power rails to prevent overheating or battery damage.

Technology Tags

ESP12F

WI-FI

SMART WATCH

WEARABLES

IOT

GC9A01 LCD

Frequently Asked Questions

What is the primary function of the ESP12F chip in this watch?

The ESP12F acts as the core microcontroller and Wi-Fi SoC, responsible for scanning wireless networks, gathering signal strength data, and driving the display.

How is the internal battery recharged?

The battery is managed by the MCP73812T charging IC, which connects to a standard power source via the SMD micro USB female port.

Can I program or modify the watch without software listed?

While no specific software is listed in the project data, the ESP12F is compatible with standard microcontroller development environments typically used for ESP8266-based hardware.

Gallery

This page is part of Kitkraft's Project Hub — a curated collection of electronics & robotics projects gathered from the maker community to help students and hobbyists discover and learn to build. Kitkraft does not claim authorship of the original project, and makes no representation as to the accuracy, completeness or safety of third-party source material. The summary and "How It Works" explanation above are AI-generated, rewritten with reference to the original tutorial — not a reproduction of it. Full credit and a direct link to the original source are provided above. If you're the original creator and have a concern about how your work is represented here, please contact us and we'll address it promptly.

Kitkraft Project Hub — curated from the maker community, credited at the source.

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