Wireless Modules – Hamtech Electronics Technologies

RC522 RFID Reader

admin — Thu, 20 Nov 2025 19:51:29 +0000

The RC522 RFID Reader Module is a low-cost, highly integrated RFID/NFC solution that operates at 13.56 MHz. It supports reading and writing to MIFARE 1K/4K RFID cards and tags.
The module uses an SPI interface (with optional I²C/UART support) for fast communication with microcontrollers such as Arduino, ESP32, and Raspberry Pi.
It is commonly used in access control systems, attendance systems, contactless identification, IoT authentication, and secure door-lock projects.
The module includes an onboard PCB antenna for stable reading performance and offers up to 5 cm reading distance depending on card/tag type.

Key Features

13.56 MHz RFID/NFC Reader/Writer
Supports MIFARE 1K, 4K, Ultralight, and compatible tags
SPI interface for fast communication
Optional I²C and UART (via firmware configuration)
Low power consumption
Up to 5 cm read distance
Compact, easy-to-integrate design
Compatible with Arduino, ESP32, Raspberry Pi

Specifications

Feature	Details
Operating Voltage	3.3V DC
Communication	SPI (default), I²C, UART
Operating Frequency	13.56 MHz
Supported Tags	MIFARE 1K/4K, Ultralight, NTAG
Maximum Read Range	Up to 5 cm
Current Consumption	13–26 mA
Logic Levels	3.3V (use level shifter for 5V boards)
Dimensions	40 × 60 mm

Applications

RFID access control systems
Attendance and logging systems
Smart door locks
NFC-based IoT authentication
Asset tracking and inventory systems
Contactless identification systems

Compatible Boards / Circuits

Arduino (Uno, Mega, Nano — via level shifting)
ESP32 / ESP8266 (direct 3.3V logic)
Raspberry Pi
Works with RFID cards, key fobs, stickers, and tags

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

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

LoRa SX1278 Module

admin — Thu, 20 Nov 2025 19:51:26 +0000

The SX1278 LoRa Module is based on Semtech’s SX1278 LoRa transceiver chip, providing long-range wireless communication with low power consumption.
It supports LoRa spread spectrum modulation, enabling reliable transmission over several kilometers in open environments.

The module communicates via SPI interface and is compatible with microcontrollers like Arduino, ESP32, ESP8266, and Raspberry Pi.
It is commonly used in remote monitoring, smart agriculture, IoT sensor networks, and LoRaWAN applications.

Key Features

Long-range LoRa communication (up to 5–10 km line-of-sight)
Low power consumption for battery-operated applications
SPI interface for microcontroller communication
Frequency: 433/470/868/915 MHz (region-dependent)
Supports LoRa spread spectrum modulation
Compact and lightweight design
Ideal for IoT, remote sensing, telemetry, and smart agriculture

Specifications

Feature	Details
Operating Voltage	3.3V DC
Communication Interface	SPI
Frequency	433/470/868/915 MHz (selectable)
Modulation	LoRa / FSK / GFSK
Output Power	+20 dBm (max)
Sensitivity	–137 dBm (LoRa)
Range	2–10 km (line-of-sight)
Logic Levels	3.3V
Current Consumption	10–120 mA (depending on mode)
Dimensions	25 × 25 mm (approx.)

Applications

IoT wireless sensor networks
Smart agriculture and environmental monitoring
Remote telemetry and data logging
LoRaWAN gateways and end nodes
Home automation and smart city projects
Low-power long-range IoT devices

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (with SPI)
LoRa gateways and network devices
Sensors, relays, displays, and actuators

LoRa SX1276 Module

admin — Thu, 20 Nov 2025 19:51:26 +0000

The SX1276 LoRa Module is built around Semtech’s SX1276 LoRa transceiver chip, offering long-range communication with low power consumption and high interference immunity.
It supports LoRa spread spectrum modulation and can transmit data over several kilometers in open environments.

The module communicates via SPI interface and is compatible with microcontrollers such as Arduino, ESP32, ESP8266, and Raspberry Pi.
It is widely used in smart agriculture, remote monitoring, IoT sensor networks, LoRaWAN gateways, and telemetry systems.

Key Features

Long-range LoRa communication (2–15 km line-of-sight)
Low power consumption for battery-powered IoT devices
SPI interface for microcontroller communication
Frequency range: 137–1020 MHz (region-dependent)
Supports LoRa and FSK/GFSK modulation
Compact and lightweight design
Ideal for IoT, smart agriculture, telemetry, and LoRaWAN applications

Specifications

Feature	Details
Operating Voltage	3.3V DC
Communication Interface	SPI
Frequency Range	137–1020 MHz (configurable per region)
Modulation	LoRa / FSK / GFSK
Output Power	+20 dBm (max)
Sensitivity	–137 dBm (LoRa)
Range	2–15 km (line-of-sight, open field)
Logic Levels	3.3V
Current Consumption	10–120 mA (depending on mode)
Dimensions	25 × 25 mm (approx.)

Applications

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

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi (SPI interface)
LoRa gateways and network devices
Sensors, relays, and actuators for long-range communication

HC-05 Bluetooth Module

admin — Thu, 20 Nov 2025 19:51:26 +0000

The HC-05 Bluetooth Module is a versatile and widely used serial communication module.
Unlike the HC-06, it can operate as master or slave, making it suitable for both point-to-point and master-slave Bluetooth applications.

It communicates via UART (TX/RX) and is compatible with Arduino, ESP32, ESP8266, and Raspberry Pi, enabling wireless control, sensor data transmission, and remote debugging.
HC-05 is ideal for robotics, IoT, home automation, and wireless serial communication projects.

Key Features

Bluetooth 2.0 + EDR serial module
Operates in master or slave mode
UART interface (TX, RX)
Communication range up to 10 meters
Compatible with 3.3V – 5V logic levels
Easy integration 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 via AT commands)
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 and IoT projects
Home automation and smart devices
Serial debugging and monitoring
Sensor data transmission to mobile apps
Educational and DIY electronics projects

Compatible Boards / Circuits

Arduino (Uno, Nano, Mega)
ESP32 / ESP8266
Raspberry Pi
UART-enabled devices for wireless serial communication

Raspberry Pi Pico W

admin — Thu, 20 Nov 2025 19:51:25 +0000

The Raspberry Pi Pico W is an enhanced version of the original Pico board, adding 802.11n Wi-Fi for wireless connectivity.
It is powered by the RP2040 dual-core ARM Cortex-M0+ processor running at 133 MHz, offering high performance for embedded applications.
The board features 264 KB of SRAM, 2 MB of onboard flash, and 26 multi-function GPIO pins supporting PWM, SPI, I²C, UART, and ADC.

Its small form factor, low cost, and wireless capabilities make it ideal for IoT devices, home automation, sensor networks, and robotics projects. The Pico W can be programmed using MicroPython, C/C++, or Arduino IDE.

Key Features

RP2040 dual-core ARM Cortex-M0+ processor @ 133 MHz
264 KB SRAM, 2 MB onboard QSPI Flash
Built-in 802.11n Wi-Fi
26 multifunction GPIO pins (PWM, SPI, I²C, UART, ADC)
Low power consumption, compact design
Programmable with MicroPython, C/C++, or Arduino IDE
Ideal for IoT, robotics, and embedded projects

Specifications

Feature	Details
Microcontroller	RP2040 Dual-core Cortex-M0+
Operating Voltage	3.3V DC (via USB)
Flash Memory	2 MB QSPI Flash
SRAM	264 KB
GPIO Pins	26 multifunction pins
Wi-Fi	2.4 GHz 802.11n
Interfaces	UART, SPI, I²C, PWM, ADC
USB	Micro-USB 1.1
Dimensions	51 × 21 mm

Applications

IoT devices and wireless sensors
Home automation and smart devices
Robotics and motor control projects
Data logging and environmental monitoring
Wi-Fi-enabled embedded systems
Educational and DIY electronics projects

Compatible Boards / Circuits

Raspberry Pi Pico W MicroPython or C/C++ projects
Arduino IDE compatible (with RP2040 core)
Sensors, relays, actuators, displays, and motors
Wi-Fi IoT dashboards and cloud connectivity

Digispark ATTiny85

admin — Thu, 20 Nov 2025 19:51:24 +0000

The Digispark ATTiny85 is a tiny, low-cost USB development board featuring the ATTiny85 microcontroller.
It provides 6 I/O pins, onboard USB interface for programming, and can be programmed directly via the Arduino IDE with the Digispark add-on.
Despite its small size, it is versatile enough for hobbyist and DIY projects including LED control, sensors, automation, and compact IoT devices.
The board is powered via USB, making it easy to integrate into small electronics projects where space and cost are important.

Key Features

Based on ATTiny85 8-bit microcontroller
Onboard USB for programming (no external programmer needed)
6 GPIO pins (2 support PWM)
Operates at 5V USB power
Programmable with Arduino IDE (Digispark add-on)
Small, compact, and low-power
Ideal for wearable electronics, DIY, and IoT projects

Specifications

Feature	Details
Microcontroller	ATTiny85
Operating Voltage	5V DC (via USB)
Clock Speed	16 MHz (internal)
GPIO Pins	6 (2 PWM, 2 analog inputs)
USB	Onboard USB interface
Flash Memory	8 KB (ATTiny85)
SRAM	512 bytes
EEPROM	512 bytes
Current Consumption	~5–10 mA idle
Dimensions	18 × 22 mm

Applications

Small IoT devices and sensors
LED lighting and PWM control projects
Wearable electronics
DIY automation and robotics
USB devices and HID emulation
Compact data loggers and timers

Compatible Boards / Circuits

Arduino IDE (with Digispark add-on)
USB-powered sensors and modules
Relay modules, LEDs, buzzers, and small actuators
Compatible with ATTiny85 libraries for Arduino

Wemos D1 Mini

admin — Thu, 20 Nov 2025 19:51:22 +0000

The Wemos D1 Mini is a small Wi-Fi development board built around the ESP8266 microcontroller, offering full TCP/IP networking capabilities. It is breadboard-friendly and programmable via the Arduino IDE. Despite its small size, it provides multiple digital I/O pins, PWM, I²C, and SPI interfaces. It is ideal for IoT devices, smart home projects, Wi-Fi sensors, and automation systems. The board also supports deep sleep mode for low-power applications.

Key Features

ESP8266 microcontroller with 80 MHz CPU
Integrated Wi-Fi (802.11 b/g/n)
11 digital I/O pins, PWM, I²C, SPI
USB interface for programming and power
Breadboard-friendly compact form factor
Supports Arduino IDE and NodeMCU firmware
Deep sleep mode for low-power IoT applications

Variants

Wemos D1 Mini (standard)
Wemos D1 Mini Pro (with external antenna for longer range)

Specifications

Feature	Details
Microcontroller	ESP8266
Operating Voltage	3.3V
Input Voltage	5V via USB
Digital I/O Pins	11
Flash Memory	4 MB
Clock Speed	80 MHz
Wi-Fi	802.11 b/g/n
Dimensions	34 × 25 × 6 mm

Applications

IoT sensors and devices
Home automation systems
Wi-Fi-enabled robots and gadgets
Smart switches and relays
Wireless data logging

Compatible Boards / Circuits

Arduino IDE for ESP8266
Compatible with Wemos shields and accessories
Can interface with sensors, relays, and displays