IoT Development Boards – 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

32GB SD Card for Raspberry Pi

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

This 32GB SD Card is perfectly compatible with all Raspberry Pi models, including Raspberry Pi 4, 3, 2, and Zero. It offers fast read/write speeds for smooth operation of the Raspberry Pi OS, applications, and media storage. Pre-formatted for FAT32 or compatible with NOOBS installation, it is reliable for both hobbyist and professional projects. The card is durable, shock-resistant, and built for continuous read/write cycles, making it suitable for embedded systems, IoT devices, and media streaming projects.

Key Features

Capacity: 32GB
High-speed read/write for Raspberry Pi applications
Compatible with all Raspberry Pi models
Durable and shock-resistant
Pre-formatted for easy use with Raspberry Pi OS or NOOBS

Specifications

Feature	Details
Capacity	32 GB
Type	Micro SD / SDHC
Read Speed	Up to 90 MB/s
Write Speed	Up to 40 MB/s
File System	FAT32 (pre-formatted)
Compatibility	Raspberry Pi 4 / 3 / 2 / Zero
Operating Temperature	-25°C to 85°C
Dimensions	24 × 32 × 2.1 mm

Applications

Raspberry Pi operating system storage
IoT and embedded projects
Media storage and playback
Data logging and sensor projects
Educational and DIY Raspberry Pi projects

Compatible Boards / Circuits

Raspberry Pi 4, 3, 2, Zero, and Zero W
Compatible with USB SD card readers for data transfer

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

MQ-135 Sensor

admin — Thu, 20 Nov 2025 19:51:30 +0000

The MQ-135 Air Quality Sensor is a versatile gas detection module capable of sensing a wide range of harmful gases and pollutants in the air. It is commonly used in air purifiers, environmental monitoring systems, and smart home air-quality projects.
The module provides both analog and digital outputs and includes an onboard potentiometer for adjusting sensitivity. It can easily interface with Arduino, ESP32, and Raspberry Pi (with ADC). Its fast response time and high sensitivity make it highly effective for real-time air-quality applications.

Key Features

Detects multiple harmful gases (NH₃, NOₓ, alcohol, benzene, smoke, CO₂)
High sensitivity and fast response
Analog and digital output modes
Adjustable sensitivity via potentiometer
Built-in LED indicator for digital threshold alerts
Long life and stable operation
Compatible with Arduino, ESP32, Raspberry Pi

Specifications

Feature	Details
Operating Voltage	5V DC
Detection Range	10–1000 ppm (various gases)
Output	Analog voltage, Digital HIGH/LOW
Preheat Time	24–48 hours (initial use)
Current Consumption	≤150 mA
Sensitivity Gases	NH₃, NOₓ, CO₂, Benzene, Alcohol, Smoke
Operating Temperature	-10°C to 50°C
Dimensions	32 × 20 × 22 mm

Applications

Indoor air-quality monitoring
Air purifiers and ventilation systems
Smart home environment sensing
Industrial pollution monitoring
IoT-based air quality projects
Smoke and harmful gas detection

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (via ADC such as ADS1115)
Air quality displays, alarms, and IoT dashboards

SIM900 GSM Module

admin — Thu, 20 Nov 2025 19:51:28 +0000

The SIM900 GSM/GPRS Module is a compact and reliable communication module widely used in IoT, remote monitoring, tracking systems, and wireless control applications.
It supports quad-band GSM frequencies, enabling global compatibility for SMS, voice calling, and GPRS data transmission.

The module communicates via UART (TX/RX), making it easy to interface with Arduino, ESP32, Raspberry Pi, and other microcontrollers.
It includes essential features such as onboard power regulation, antenna support, SIM card slot, status LEDs, and network indicators.
The SIM900 is ideal for projects that require wireless data logging, remote SMS alerts, GPS/GSM combined systems, and MQTT over GPRS communication.

Key Features

Quad-band GSM/GPRS (850/900/1800/1900 MHz)
Supports SMS, voice calls, and GPRS data
UART serial communication
Built-in TCP/UDP stack
Onboard SIM card holder
External antenna connector
Low power consumption
AT Command set support
Compatible with Arduino, ESP32, Raspberry Pi

Specifications

Feature	Details
Operating Voltage	5V (module supply), 3.3V logic compatible
GSM Bands	850/900/1800/1900 MHz
Communication Interface	UART (TX/RX), Baud: 9600–115200
GPRS Class	10
SMS Support	Text & PDU mode
Voice Support	Call in/out
Antenna	External GSM antenna
Power Consumption	Idle: ~20–30 mA, Peak: up to 2A
SIM Type	Standard SIM
Dimensions	~40 × 40 mm (varies by board version)

Applications

SMS-based control systems
Remote monitoring & telemetry
IoT data transmission over GPRS
Vehicle tracking (with GPS module)
Home/industrial alert systems
GSM-based automation
Wireless sensor networks
MQTT via GSM/GPRS

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega — ensure 2A power supply)
ESP32 / ESP8266
Raspberry Pi (via UART)
Works with GPS modules, relays, sensors, data loggers

SIM7600E-H LTE Module

admin — Thu, 20 Nov 2025 19:51:28 +0000

The SIM7600E-H LTE Module is a high-performance 4G communication module designed for IoT, M2M, and industrial automation.
It supports LTE CAT-4 with fast download/upload speeds, enabling real-time cloud communication, remote video streaming, data logging, and broadband connectivity.

Equipped with GNSS (GPS/GLONASS/BeiDou), the module offers accurate positioning for vehicle tracking and navigation systems.
It supports multiple communication protocols including TCP, UDP, HTTP, HTTPS, FTP, MQTT, and more—making it suitable for both simple and advanced IoT gateways.

The SIM7600E-H module communicates via USB or UART, making it compatible with Arduino, ESP32, Raspberry Pi, and Linux SBCs. It is widely used in 4G routers, CCTV connectivity, telemetry systems, and vehicle tracking units.

Key Features

4G LTE CAT-4 high-speed connectivity
Supports LTE / WCDMA / GSM networks
Built-in GNSS: GPS, GLONASS, BeiDou
Supports SMS, voice calling, VoLTE (variant dependent)
USB 2.0 high-speed interface (plug-and-play on Raspberry Pi)
UART interface for microcontrollers
Supports TCP/UDP, HTTP, HTTPS, FTP, MQTT
Low power consumption
Works with Arduino, ESP32, Raspberry Pi, Linux systems

Specifications

Feature	Details
Operating Voltage	3.4V – 4.2V (typ. 3.8V)
LTE Category	CAT-4
Download Speed	Up to 150 Mbps
Upload Speed	Up to 50 Mbps
Interfaces	USB 2.0, UART, GPIO
GNSS Support	GPS / GLONASS / BeiDou
Network Support	LTE, WCDMA, GSM
SMS Support	Text & PDU
Positioning Accuracy	<2.5 m CEP
Power Consumption	Idle ~10–20 mA (network dependent)
SIM Type	Nano/Micro SIM (board dependent)
Dimensions	30 × 30 mm (core module), varies by breakout

Applications

IoT and industrial automation
Vehicle tracking & fleet management
Remote CCTV/Camera 4G transmission
Smart city and environmental monitoring
IoT gateways and routers
GPS tracking systems
Remote telemetry and SCADA
High-speed cloud connectivity

Compatible Boards / Circuits

Arduino (Mega recommended)
ESP32 / ESP8266
Raspberry Pi (USB direct support)
Jetson Nano, Linux PCs, SBCs
Compatible with LTE antennas, GPS antennas, IoT dashboards

PN532 NFC Reader

admin — Thu, 20 Nov 2025 19:51:28 +0000

The PN532 NFC Reader Module is a versatile solution for NFC and RFID applications.
It supports multiple communication protocols, including SPI, I²C, and UART, for easy integration with microcontrollers such as Arduino, ESP32, and Raspberry Pi.
The module can read and write to MIFARE 1K/4K cards, NTAG, FeliCa, and other NFC tags, making it suitable for access control systems, attendance tracking, payment systems, and IoT authentication.

Equipped with an onboard PCB antenna, the PN532 ensures stable and reliable NFC communication. It is widely used in hobbyist and industrial applications for NFC-based interactions.

Key Features

Supports NFC and RFID standards: ISO/IEC 14443 Type A/B, MIFARE, FeliCa
Communication via SPI, I²C, or UART
Reads and writes to MIFARE, NTAG, and other NFC tags
Onboard PCB antenna for stable reading
High-speed and reliable communication
Compact and easy-to-integrate design
Compatible with Arduino, ESP32, Raspberry Pi

Specifications

Feature	Details
Operating Voltage	3.3V – 5V DC
Communication Interfaces	SPI, I²C, UART
Supported Cards	MIFARE 1K/4K, NTAG, FeliCa
Maximum Read Range	~5 cm (varies by card/tag)
Operating Frequency	13.56 MHz
Logic Levels	3.3V / 5V compatible
Current Consumption	~15–50 mA
Dimensions	40 × 60 mm (approx.)

Applications

NFC-based access control and attendance systems
Contactless payment and identification systems
IoT authentication and security projects
Asset tracking and inventory management
Educational and DIY NFC projects
Smart card applications and interactive electronics

Compatible Boards / Circuits

Arduino (Uno, Mega, Nano)
ESP32 / ESP8266
Raspberry Pi
Works with NFC cards, key fobs, stickers, and tags

HC-06 Bluetooth Module

admin — Thu, 20 Nov 2025 19:51:27 +0000

The HC-06 Bluetooth Module is a simple and cost-effective serial communication module designed for wireless data transfer.
It operates as a slave-only device, pairing with master Bluetooth devices to exchange data over UART (TX/RX).
The module supports a communication range of up to 10 meters and is commonly used in Arduino, ESP32, ESP8266, and Raspberry Pi projects for remote control, sensor data transmission, and serial communication replacement.

HC-06 is easy to integrate into projects, requiring only power, ground, TX, and RX connections. It is widely used in IoT, robotics, home automation, and educational electronics.

Key Features

Bluetooth 2.0 serial communication module
Slave-only module (HC-06)
UART interface (TX, RX)
Communication range up to 10 meters
Operates at 3.3V – 5V logic levels
Easy to integrate with Arduino, ESP32, ESP8266, and Raspberry Pi
Low power consumption and compact design

Specifications

Feature	Details
Operating Voltage	3.3V – 5V DC
Communication Interface	UART (TX/RX)
Baud Rate	Default 9600 bps (configurable)
Bluetooth Version	2.0 + EDR
Range	Up to 10 meters
Logic Levels	3.3V / 5V compatible
Current Consumption	~30 mA
Dimensions	36 × 15 mm (approx.)

Applications

Wireless serial communication between microcontrollers and PCs
Remote-controlled robotics projects
IoT device data transmission
Home automation and smart devices
Wireless sensor networks
Educational and DIY electronics projects

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi
Compatible with UART-capable devices for serial communication

HM-10 BLE Module

admin — Thu, 20 Nov 2025 19:51:27 +0000

The HM-10 BLE Module enables low-power wireless communication between microcontrollers, smartphones, tablets, and other BLE-enabled devices.
It supports UART (TX/RX) serial communication and can operate in central or peripheral mode, making it versatile for a wide range of IoT applications.

The module is commonly used with Arduino, ESP32, ESP8266, and Raspberry Pi, providing reliable BLE communication for smart devices, sensors, wearables, and home automation systems.
With a compact form factor and low energy consumption, HM-10 is ideal for battery-powered projects and applications where classic Bluetooth is too power-intensive.

Key Features

Bluetooth 4.0 Low Energy (BLE) compliant
UART interface (TX/RX) for easy integration
Configurable as Central or Peripheral
Low power consumption
Compact and lightweight design
Supports iOS, Android, and BLE-enabled devices
Ideal for IoT, wearables, home automation, and sensor networks

Specifications

Feature	Details
Operating Voltage	3.3V – 6V DC
Communication Interface	UART (TX/RX)
Baud Rate	Default 9600 bps (configurable)
Bluetooth Version	4.0 BLE
Operating Range	Up to 50 meters (line of sight)
Logic Levels	3.3V / 5V compatible
Current Consumption	~8–15 mA (active), <1 μA (sleep)
Dimensions	14 × 28 mm

Applications

BLE communication for IoT devices
Wireless sensor networks
Wearable electronics
Home automation and smart devices
Mobile-controlled robotics
Data logging and remote monitoring
Health and fitness devices

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (with UART)
BLE-enabled smartphones and tablets
IoT dashboards and cloud-based BLE applications

ESP32 LoRa TTGO

admin — Thu, 20 Nov 2025 19:51:27 +0000

The ESP32 LoRa TTGO board combines the dual-core ESP32 microcontroller with LoRa SX1276/SX1278 radio technology, enabling long-range, low-power wireless communication alongside Wi-Fi and Bluetooth connectivity.

It features OLED display options on some variants, multiple GPIOs, ADC, PWM, SPI, I²C, and UART interfaces, making it highly versatile for IoT, sensor nodes, smart agriculture, and telemetry projects.
The board can be programmed using Arduino IDE, MicroPython, or ESP-IDF, allowing flexible development for both hobbyist and professional applications.

Its long-range LoRa capability allows communication over several kilometers in open environments, making it ideal for remote monitoring, weather stations, and LoRaWAN-based IoT networks.

Key Features

Dual-core ESP32 microcontroller with Wi-Fi & Bluetooth
Integrated LoRa SX1276/SX1278 module for long-range communication
Optional OLED display (0.96″ or 1.3″) on some variants
Multiple GPIO pins supporting ADC, PWM, SPI, I²C, UART
Low-power consumption suitable for battery-powered applications
Programmable via Arduino IDE, MicroPython, or ESP-IDF
Supports LoRaWAN or point-to-point LoRa communication
Compact and versatile for IoT and wireless projects

Specifications

Feature	Details
Microcontroller	ESP32 Dual-core Tensilica LX6
Operating Voltage	3.3V DC
Flash Memory	4 MB (varies by variant)
SRAM	520 KB
LoRa Module	SX1276 / SX1278
Frequency Bands	433 MHz, 868 MHz, 915 MHz (region dependent)
GPIO Pins	~16 (depending on variant)
Interfaces	UART, SPI, I²C, ADC, PWM
Display	Optional OLED 0.96″ / 1.3″
Communication	Wi-Fi 802.11 b/g/n, Bluetooth 4.2, LoRa long-range
Dimensions	50 × 25 mm (approx.)

Applications

Long-range IoT sensor nodes
Smart agriculture and environmental monitoring
Remote telemetry systems
LoRaWAN gateways and networks
Wireless data logging
Home automation and smart city projects
Low-power battery-operated IoT devices

Compatible Boards / Circuits

Arduino IDE (ESP32 core)
MicroPython or ESP-IDF
LoRa networks and gateways
Sensors, relays, displays, and actuators
IoT dashboards and cloud integration platforms