LCD1602 I2C

i2c lcd1602

LCD1602 I2C

The LCD1602 I2C display is an upgraded version of the standard 16×2 LCD, equipped with an I2C (Inter-Integrated Circuit) adapter. This reduces the required microcontroller pins from 16+ to just 2 (SDA and SCL), making it highly efficient for projects with limited GPIO availability. It still features 16 characters × 2 lines, each formed on a 5×8 dot matrix, and supports adjustable backlight and contrast.

i2c lcd pcf8574

Key Features:

  • 16×2 character display with I2C interface
  • Requires only 2 pins (SDA, SCL) for communication
  • Works with 5V (some modules support 3.3V)
  • Adjustable backlight and contrast via onboard potentiometer
  • Compatible with Arduino, STM32, ESP32, Raspberry Pi

Applications:

  • IoT and embedded systems with limited GPIOs
  • Compact DIY electronics and hobby projects
  • Home appliances and monitoring systems
  • Industrial devices needing simple text output

LCD16x2 (1602)

lcd1602

LCD16x2 (1602)

The 16×2 LCD (often referred to as 1602 LCD) is one of the most widely used alphanumeric liquid crystal displays in embedded systems. The “16×2” notation means it can display 16 characters per line across 2 rows. Each character is formed within a 5×8 dot matrix, making it easy to display letters, numbers, and custom symbols.

lcd1602

Key Features:

  • 16×2 characters, 5×8 dot matrix
  • Works on 5V (some 3.3V versions)
  • Supports custom characters
  • Backlight options (green/blue)

Applications:

  • Arduino, STM32, ESP32, Raspberry Pi projects
  • Home appliances and control panels
  • Measurement devices and DIY electronics

ESP32 Wroom Dev Board

ESP32 Wroom Dev Board

The ESP32-WROOM Dev Board is a powerful, low-cost microcontroller platform with built-in Wi-Fi and Bluetooth. It’s based on the ESP32-WROOM-32 module, featuring a dual-core processor, plenty of GPIOs, and integrated USB-to-serial for easy programming, making it ideal for IoT and embedded projects.

ESP32 Wrrom 32 Dev board

Key Features:

  • Dual-core processor up to 240 MHz
  • Wi-Fi and Bluetooth (Classic + BLE)
  • Multiple GPIOs with ADC, DAC, I²C, SPI, UART, PWM support
  • USB-to-serial for simple programming
  • Low-power modes for battery use

Applications:

  • IoT devices and smart home projects
  • Robotics and wireless control
  • Remote monitoring and data logging
  • Prototyping and educational use

BME280 Sensor

BME280 Sensor

The BME280 is a highly integrated environmental sensor developed by Bosch Sensortec. It combines temperature, pressure, and humidity sensing in a single compact package, making it ideal for weather monitoring and IoT applications. With support for both I2C and SPI interfaces, the sensor is flexible and easy to integrate into microcontroller-based systems such as STM32, Arduino, ESP8266, and ESP32. Its low power consumption makes it suitable for battery-powered devices, while the high precision ensures reliable performance even in demanding applications.

BME280 Sensor

Key Features:

  • Measures temperature, pressure, and humidity in one device
  • Supports I2C (up to 3.4 MHz) and SPI (up to 10 MHz) communication
  • Wide measurement ranges:
  • Temperature: -40 °C to +85 °C
  • Pressure: 300 hPa to 1100 hPa
  • Humidity: 0% to 100% RH
  • High resolution: up to 20-bit for pressure/temperature and 16-bit for humidity
  • Very low power consumption, ideal for portable/IoT projects
  • Compact package: 2.5 × 2.5 × 0.93 mm

Applications:

  • Weather stations and climate monitoring systems
  • IoT devices for smart homes and smart cities
  • Altitude tracking in drones and navigation devices
  • Indoor air quality monitoring
  • Wearable devices for health and fitness tracking
  • Environmental data logging for research and agriculture

FT232 USB to TTL Converter

FT232 USB to TTL Converter

The FT232 USB to TTL Converter is a handy module used to connect microcontrollers, development boards, and serial devices to a computer via USB. It is based on the FT232RL chip, which provides stable and reliable USB-to-serial communication. With built-in drivers for major operating systems, it allows you to easily upload code, debug, or exchange data with devices that use UART communication.

FT232 USB to TTL Converter

Key Features:

  • Based on FT232RL chip for reliable performance
  • Converts USB signals to TTL (UART) serial
  • Supports baud rates up to 1 Mbps
  • Works with 3.3V and 5V logic levels
  • Compatible with Windows, Linux, and macOS
  • Useful for programming and debugging MCUs like Arduino, ESP8266, STM32

Applications:

  • Uploading firmware to Arduino, ESP8266, ESP32, STM32
  • Serial debugging and data logging
  • Connecting sensors and modules to PC
  • Learning and testing UART communication

ESP8266 ESP-01 Adapter

ESP8266 ESP-01 Adapter

The ESP8266 ESP-01 Adapter is a convenient breakout board designed to simplify the connection of the ESP-01 Wi-Fi module with development boards like Arduino, STM32, and others. It provides proper voltage regulation (3.3V) and easy pin access, protecting the ESP-01 from damage due to incorrect wiring or overvoltage. With its plug-and-play design, it makes using the ESP-01 module much easier for beginners and hobbyists.

ESP8266 ESP-01 Adapter

Key Features:

  • Built-in 3.3V voltage regulator
  • Compatible with ESP8266 ESP-01 Wi-Fi module
  • Provides easy pin headers for quick connection
  • Protects module from overvoltage damage
  • Compact and beginner-friendly

Applications:

  • IoT projects using ESP8266 ESP-01
  • Safe integration with Arduino and STM32
  • Home automation systems
  • Quick prototyping and testing setups

ESP8266-01 Wifi transceiver Module

ESP8266-01 Wifi transceiver Module

The ESP8266-01 is a compact and affordable Wi-Fi transceiver module that allows microcontrollers to connect to a Wi-Fi network and make simple TCP/IP connections. It is widely used in IoT projects due to its small size, low power consumption, and ease of integration with microcontrollers like Arduino and STM32.

ESP8266-01 Wifi transceiver Module

Key Features:

  • Supports STA and AP modes
  • UART interface for MCU communication
  • Compact design with low power usage
  • Cost-effective and widely used in IoT

Applications:

  • Smart home automation
  • IoT-based devices and sensors
  • Wireless data logging
  • Remote monitoring and control systems

STM32F103 Dev Board

STM32F103

STM32F103 Dev Board

The STM32F103C8T6 is a popular 32-bit ARM Cortex-M3 microcontroller from STMicroelectronics. It belongs to the STM32F1 family and is widely used in embedded systems because of its balance of performance, low power consumption, and cost-effectiveness. This chip is at the heart of the well-known “Blue Pill” development board, making it a favorite among students, hobbyists, and professionals.

Key Features:

  • ARM Cortex-M3 core, 72 MHz
  • 64 KB Flash, 20 KB SRAM
  • Up to 37 GPIO pins
  • Interfaces: USART, SPI, I2C, CAN, USB
  • 10-bit ADC (multiple channels)
  • Built-in IWDG and WWDG

Applications:

  • Embedded system learning (Blue Pill board)
  • IoT devices and sensor projects
  • Industrial control and motor drivers
  • Consumer electronics and home automation
  • Robotics and automation systems

Breadboard MB-102

breadboard mb-102

Breadboard MB-102

The MB-102 is a compact, solderless breadboard ideal for prototyping and testing electronic circuits. It features dual power rails, 830 tie-points, and a durable design, making it perfect for students, hobbyists, and engineers.

breadboard mb-102

Key Points

  • Solderless and reusable for easy prototyping
  • Dual 3.3V/5V power rails
  • 830 tie-points for flexible circuit layouts
  • Compact and lightweight design
  • Durable plastic base with reliable nickel-plated contacts
  • Compatible with Arduino, ESP32, STM32, and other modules
  • Easy to connect with jumper wires and components

Applications

  • Circuit prototyping and testing
  • Educational electronics projects
  • Arduino, ESP32, STM32 experiments
  • DIY and IoT projects

R307 Fingerprint Sensor

R307 Fingerprint sensor

R307 Fingerprint Sensor Module

The R307 Fingerprint Sensor is a popular biometric module designed for secure and reliable fingerprint recognition. It combines an optical fingerprint sensor with a powerful processor to capture, store, and match fingerprints with high accuracy. Its compact design and easy serial interface make it suitable for a wide range of embedded applications.

R307

Key Features:

  • Optical fingerprint recognition with high image quality
  • Stores up to 1,000 fingerprints in its internal memory
  • UART (TTL) interface for easy microcontroller communication
  • Fast fingerprint matching and identification
  • Compact, durable, and widely supported module

Applications:

  • Biometric attendance systems
  • Door locks and access control
  • Safe and locker security
  • Identity verification in IoT projects
  • DIY electronics and Arduino/STM32 projects