IoT Components – Hamtech Electronics Technologies

Arduino uno ATmega328P-PU Microcontroller (28-Pin DIP)

admin — Wed, 25 Mar 2026 04:00:55 +0000

The Arduino UNO R3 is one of the most popular microcontroller boards used for learning and building electronics projects. Powered by the ATmega328P microcontroller, it is perfect for beginners, students, and professionals working on embedded systems, IoT, and robotics.

It provides a simple and flexible platform for developing interactive projects using sensors, motors, displays, and communication modules.

Microcontroller: ATmega328P
Operating voltage: 5V
Input voltage: 7V – 12V (recommended)
Digital I/O pins: 14 (6 PWM outputs)
Analog input pins: 6
Flash memory: 32KB
Clock speed: 16 MHz
USB interface for programming and power
Compatible with Arduino IDE
Supports shields and modules

Applications:

Robotics and smart car projects
IoT systems (with ESP modules)
Home automation
Learning embedded systems
Sensor-based projects

W5500 Ethernet

admin — Thu, 20 Nov 2025 19:52:03 +0000

The W5500 Ethernet Module uses the W5500 hardwired TCP/IP embedded Ethernet controller, providing a fast and stable network connection with a SPI interface for easy microcontroller integration. It supports TCP, UDP, ICMP, IPv4, ARP, IGMP, and PPoE protocols, making it suitable for networked devices, IoT systems, web servers, and data transmission projects. The module is widely used in home automation, smart devices, and Ethernet-enabled Arduino and ESP32 projects.

Key Features

W5500 hardwired TCP/IP Ethernet controller
SPI interface for easy connection to microcontrollers
Supports TCP, UDP, ICMP, IPv4, ARP, IGMP, PPoE protocols
10/100 Mbps network speed
Compact and lightweight for embedded applications
Compatible with Arduino, ESP32, Raspberry Pi

Variants

Standard W5500 Module (SPI interface)
W5500 Module with PoE support

Specifications

Feature	Details
Controller	W5500 Ethernet Controller
Interface	SPI (Serial Peripheral Interface)
Operating Voltage	3.3–5V DC
Network Speed	10/100 Mbps
Protocols Supported	TCP, UDP, ICMP, IPv4, ARP, IGMP, PPoE
Operating Temperature	-40°C to 85°C
Dimensions	35 × 25 × 15 mm

Applications

IoT Ethernet projects
Arduino / ESP32 web servers
Network-enabled data loggers
Smart home devices with Ethernet connectivity
Embedded networked systems

Compatible Boards / Circuits

Arduino Uno, Mega, Nano
ESP32 / ESP8266
Raspberry Pi (via SPI)
Any microcontroller supporting SPI communication

PS2 Controller Module

admin — Thu, 20 Nov 2025 19:52:03 +0000

The PS2 Controller Module provides a simple way to read button states and analog joystick positions from standard PS2 controllers. It communicates with microcontrollers via a few digital pins and can be used for robotics control, remote-controlled vehicles, or custom game interfaces. Compatible libraries make integration quick and easy for Arduino and ESP32 platforms.

Key Features

Supports standard PS2 wired controllers
Reads buttons and analog joystick values
Easy to interface with Arduino and ESP32
Low power consumption, compact module
Ideal for robotics, remote vehicles, and gaming projects

Variants

Standard PS2 Controller Module
With connector cable for easy Arduino connection

Specifications

Feature	Details
Communication	Digital pins (clock, command, attention, data)
Compatible Controllers	Sony PS2 wired controllers
Operating Voltage	3.3V – 5V
Current Consumption	~10 mA
Dimensions	~45 × 20 × 10 mm

Applications

Robotics control via PS2 joystick
Remote-controlled vehicles
DIY gaming interfaces
Educational electronics projects
Interactive IoT devices

Compatible Boards / Circuits

Arduino Uno, Mega, Nano
ESP32 / ESP8266
Any microcontroller with digital I/O pins

ENC28J60 LAN

admin — Thu, 20 Nov 2025 19:52:02 +0000

The ENC28J60 Ethernet LAN Module is a reliable and affordable networking solution designed for microcontrollers that require wired Ethernet connectivity. Built around the Microchip ENC28J60 single-chip Ethernet controller, this module provides a full 10Mbps Ethernet interface via a standard SPI communication bus.

It includes an onboard crystal oscillator, voltage regulator, RJ45 connector with integrated magnetics, and status LEDs for link and activity indication. The module operates from 3.3V logic, making it suitable for Arduino (with level shifting), ESP8266, ESP32, STM32, PIC, AVR, and most embedded systems.

This module is perfect for IoT systems that require stable and secure wired network connectivity, especially in environments with heavy interference where Wi-Fi is unreliable.

Key Features

ENC28J60 Ethernet Controller
– Supports 10BASE-T Ethernet with integrated MAC + PHY.
SPI Interface
– Simple integration with microcontrollers using SPI communication.
Integrated RJ45 Jack with Magnetics
– Provides stable signal quality and EMI protection.
Built-in 3.3V Voltage Regulator
– Allows powering from 5V while maintaining safe logic levels.
Status LEDs
– Link activity and network status indicators.
Low Cost & Compact
– Ideal for DIY IoT and embedded Ethernet solutions.

Specifications

Feature	Details
Controller	Microchip ENC28J60
Interface	SPI (Full duplex)
Ethernet Standard	10BASE-T (10 Mbps)
Operating Voltage	3.3V logic (5V power supported with regulator)
Current Consumption	~160mA
Crystal	25MHz
Pins	VCC, GND, SCK, SI, SO, CS, INT, RESET
Connector	RJ45 with built-in transformer
Dimensions	Approx. 48 × 25 mm

Compatible Boards

Arduino Uno / Mega / Nano (use 5V → 3.3V logic shifter recommended)
ESP32 / ESP8266
STM32
PIC Microcontrollers
AVR ATmega/ATtiny
Raspberry Pi (via SPI)
NodeMCU, Wemos D1 Mini

Applications

IoT Ethernet devices
Smart home and industrial automation
Web servers on microcontrollers
Network-controlled relays and sensors
Wired communication in noisy/EMI-prone environments
Data loggers with LAN upload
Security systems and embedded control panels

Package Includes

1 × ENC28J60 Ethernet LAN Module

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I2C Logic Level Converter

admin — Thu, 20 Nov 2025 19:52:01 +0000

The I2C Logic Level Converter is a bi-directional 4-channel module that allows microcontrollers and peripherals with different voltage levels to communicate without damaging components. Commonly used in projects combining 3.3V boards like ESP32 or Raspberry Pi with 5V sensors, modules, and displays. Its bi-directional design ensures smooth communication across all I2C lines.

Key Features

4-channel bi-directional logic level conversion
Supports 1:1 conversion for SDA and SCL lines
Compatible with I2C communication protocol
Works with 3.3V and 5V logic devices
Compact, solderless, and easy to use

Variants

4-channel I2C Logic Level Converter (standard module)
2-channel version (for SDA & SCL only)

Specifications

Feature	Details
Channels	4 bi-directional
Input Voltage	HV: 5V, LV: 3.3V
Supported Logic	3.3V ↔ 5V
Communication	I2C, general logic signals
Dimensions	~30 × 17 × 3 mm

Applications

Interface 3.3V microcontrollers (ESP32, Raspberry Pi) with 5V I2C sensors/modules
Safely connect OLED displays, RTC modules, and other peripherals
Embedded systems requiring mixed voltage communication
IoT projects with multi-voltage devices

Compatible Boards / Circuits

Arduino Uno, Mega, Nano
ESP32 / ESP8266
Raspberry Pi / Pico
Any I2C-compatible device

1-channel Relay

admin — Thu, 20 Nov 2025 19:51:56 +0000

The 1-Channel Relay Module is a compact, high-quality electromechanical switch designed for controlling high-voltage AC or DC devices using low-voltage logic signals. It can be triggered by microcontrollers such as Arduino, ESP8266, ESP32, STM32, Raspberry Pi, and other logic-level systems.
The relay provides electrical isolation between the control circuit and the high-voltage load, making it suitable for home automation, industrial control, and smart IoT applications.

Key Features

Supports both AC and DC loads
Optocoupler isolation for noise protection (on opto-isolated version)
Works with 3.3V and 5V logic
High-quality relay with long lifespan
Status indication LED
Screw terminals for secure wiring
Suitable for microcontroller-based automation

Variants

Standard Relay (No optocoupler)
Optocoupler Isolated Relay
5V Relay Module
3.3V Relay Module

Specifications

Feature	Details
Relay Voltage	5V or 3.3V (depending on variant)
Trigger Voltage	3.3–5V
Contact Rating	10A @ 250VAC / 10A @ 30VDC
Control Signal Type	Low-level or high-level trigger (depends on model)
Output	NO, NC, COM
Isolation	Optional optocoupler
Indicators	Power LED & Relay status LED
Mounting	PCB mount / Screw terminals

Applications

Smart home automation
Lighting control
Motor and pump switching
HVAC control
Industrial automation
IoT smart switches
Remote power control
Security systems

Compatible Boards

Arduino Uno / Mega / Nano
ESP8266, Wemos D1 Mini
ESP32 DevKit
Raspberry Pi (any model)
STM32 series
PIC / AVR / ARM boards

YF-S401 Flow Sensor

admin — Thu, 20 Nov 2025 19:51:46 +0000

The YF-S401 Flow Sensor uses a Hall-effect sensor to detect the rotation of a turbine inside the module. Each rotation generates a pulse, which can be counted by a microcontroller to measure water flow rate in liters per minute. It is widely used in IoT water monitoring, water dispensers, irrigation systems, and DIY smart home projects. The sensor operates at low voltages, is easy to interface, and provides real-time flow measurements.

Key Features

Hall-effect sensor-based flow detection
Measures water flow in liters per minute
Pulse output for microcontroller interfacing
Operating voltage: 5–18V DC
Flow range: 1–30 L/min
Compact and lightweight for easy integration
Compatible with Arduino, ESP32, and Raspberry Pi

Variants

YF-S401 Standard Flow Sensor
YF-S401 with 1/2″ or 3/4″ G1/2 threaded connectors

Specifications

Feature	Details
Sensor Type	Hall-effect
Operating Voltage	5–18V DC
Flow Range	1–30 L/min
Output Type	Pulse
Max Pressure	1.75 MPa
Operating Temperature	0–80°C
Thread Size	G1/2 (standard)
Dimensions	72 × 35 × 27 mm

Applications

Water flow monitoring and measurement
Smart water meters and IoT projects
Irrigation and water distribution systems
Water dispensers and filtration systems
DIY liquid flow experiments with microcontrollers

Compatible Boards / Circuits

Arduino Uno, Mega, Nano
ESP32 / ESP8266
Raspberry Pi (via GPIO)
Any microcontroller capable of counting pulses

raspberry pi 3 B+

admin — Thu, 20 Nov 2025 19:51:43 +0000

The Raspberry Pi 3 Model B+ features a quad-core 64-bit ARM Cortex-A53 processor running at 1.4 GHz, combined with 1GB RAM, making it capable of handling a wide range of applications from media streaming to robotics. It comes with onboard Wi-Fi (802.11 b/g/n/ac) and Bluetooth 4.2, a Gigabit Ethernet interface, and 40 GPIO pins for sensor and actuator interfacing. It supports various operating systems including Raspberry Pi OS, Ubuntu, and other Linux distributions. Its compact size, energy efficiency, and extensive community support make it a top choice for makers, educators, and engineers.

Key Features

Quad-core ARM Cortex-A53 64-bit CPU at 1.4 GHz
1 GB LPDDR2 RAM
Built-in Wi-Fi 802.11 b/g/n/ac and Bluetooth 4.2
40 GPIO pins for hardware interfacing
Full HDMI output for video and audio
MicroSD slot for OS and storage
Compact, low-power design

Specifications

Feature	Details
Processor	Quad-core ARM Cortex-A53 1.4 GHz
RAM	1 GB LPDDR2
Connectivity	Wi-Fi 802.11 b/g/n/ac, Bluetooth 4.2, Ethernet
GPIO Pins	40
USB Ports	4 × USB 2.0
Video & Audio	HDMI, Composite, 3.5mm audio
Storage	MicroSD slot
Power Supply	5V / 2.5A via micro USB
Dimensions	85 × 56 × 17 mm

Applications

IoT devices and home automation
Robotics and sensor projects
Media streaming and retro gaming
Educational computing and programming
DIY electronics and maker projects

Compatible Boards / Circuits

Raspberry Pi HATs, sensors, displays, and relays
Compatible with Arduino and microcontroller-based expansions

RCWL-0516 Radar Sensor

admin — Thu, 20 Nov 2025 19:51:42 +0000

The RCWL-0516 Radar Sensor detects moving objects using a 3–5.8 GHz microwave Doppler radar. Unlike PIR sensors, it can detect motion through walls and thin materials. The module outputs a digital HIGH signal when motion is detected and includes an onboard potentiometer to adjust sensitivity. It operates with low power and is compatible with microcontrollers like Arduino, ESP32, and Raspberry Pi, making it suitable for security alarms, automatic lighting, robotics, and home automation projects.

Key Features

Detects motion using Doppler microwave radar
Can sense through walls and thin objects
Digital output signal for easy microcontroller interfacing
Adjustable sensitivity via onboard potentiometer
Low power consumption, compact and breadboard-friendly

Specifications

Feature	Details
Operating Voltage	4–28 V DC
Output	Digital (HIGH on motion)
Detection Range	5–7 meters (typical)
Frequency	3.18–3.45 GHz
Current Consumption	3–5 mA
Dimensions	32 × 16 × 7 mm

Applications

Automatic lighting systems
Motion detection alarms
Home and office security
Robotics and automation projects
IoT smart devices

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (with GPIO input)
Can interface with LEDs, buzzers, relays, and other output devices

BMP280 Sensor

admin — Thu, 20 Nov 2025 19:51:40 +0000

The BMP280 Sensor is a compact, low-power device capable of measuring atmospheric pressure and temperature with high accuracy. It communicates via I²C or SPI interfaces, making it easy to interface with microcontrollers like Arduino, ESP32, and Raspberry Pi. The sensor is widely used in weather monitoring systems, altimeters, drones, and environmental sensing projects. Its small footprint and low power consumption make it ideal for portable and battery-powered applications.

Key Features

Measures barometric pressure and temperature
High precision and stability
Supports I²C and SPI communication
Low power consumption, suitable for battery-powered applications
Compact and breadboard-friendly design

Specifications

Feature	Details
Operating Voltage	1.8–3.6V DC
Pressure Range	300–1100 hPa
Accuracy	±1 hPa (pressure), ±1°C (temperature)
Interface	I²C, SPI
Current Consumption	≤0.1 mA (typical)
Operating Temperature	-40°C to 85°C
Dimensions	16 × 12 × 1 mm

Applications

Weather stations and environmental monitoring
Altitude detection in drones and RC aircraft
IoT environmental sensing projects
Smart home and agriculture monitoring
Educational and DIY electronics projects

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (via I²C/SPI)
Can interface with displays, data loggers, and cloud platforms