• Integrated ESP32-S2FH4 chip with advanced Xtensa single-core 32-bit LX7 microprocessor.
• Equipped with 128KB ROM and 320KB SRAM for efficient processing.
• Includes 16KB RTC SRAM for low-power applications.
• Built-in 40MHz crystal oscillator for stable operation.

• 4pcs 50kg Half-bridge strain gauge load cells for accurate weight measurement
• Includes 1x HX711 AD Weight Module for high-precision measurements
• Suitable for use in electronic scales, including body scales
• HX711 uses a 24-bit high precision A/D converter chip

• Wide Voltage Range: Operates with an input voltage of 3.3V to 5.5V, making it compatible with various systems.
• Accurate Measurement: Provides TDS (Total Dissolved Solids) measurement range of 0-1000ppm with ±10% accuracy at 25°C.
• Low Power Consumption: 3-6mA working current, ensuring energy efficiency.
• Waterproof Probe: Includes a waterproof TDS probe for reliable outdoor or aquatic use.

• Work Frequency: 72 MHz
• Memory: 64KB flash memory and 20KB SRAM
• Power Supply: 2.0-3.6V
• I/O: General-purpose I/O pins

• Open-Type Vibration Sensor for precise motion detection
• Comparator Output (0 and 1) for easy digital signal processing
• Wide Voltage Range (3V - 5V) supports various microcontrollers
• Strong Driving Ability of over 15mA output current

• Simultaneous Charging and Discharging: Supports charging and discharging at the same time.
• Large Current: Handles high current for efficient power conversion.
• Compact Size: Small and lightweight design, easy to integrate into various projects.

• PWM pulse-width modulation output for accurate readings
• Detects particles as small as 1 µm
• High and low voltage outputs for clean air and particles
• Compact and lightweight design

• Imported normally-open reed switch for reliable performance
• Comparator output with clear signal and clean waveform
• High driving ability with more than 15mA output

• Microcontroller: STM32F407VGT6 ARM Cortex-M4 core
• Clock Speed: Up to 168 MHz
• Flash Memory: 512KB of flash memory
• RAM: 192KB of RAM

• Non-isolated Buck Module: A reliable and efficient step-down power conversion.
• Wide Input Range: Input voltage from 6V to 36V.
• Adjustable Output Voltage: Output voltage adjustable from 1.25V to 32V, with a default output of 5V.
• MPPT Voltage Setting: MPPT range from 6V to 36V to optimize solar panel charging.

Specifications:

• Module supply voltage: DC 5V
• Working environment temperature: -40 ° C ~ 85 ° C
• Communication interface: IIC
• Ultra low power consumption: programmable sample rate and LED current
• Save power; ultra-low standby current (0.7μA, typical)
• Size: 5.6mm x 3.3mm x 1.55mm

Package:

1x High Accuracy I2C MAX30105 Particle Optical Sensor Photodetectors Board Module Smoke Detection Flame Module 1.8V

• Quad-band: 850/900/1800/1900MHz for global GSM network compatibility
• Connects to any global GSM network using a 2G SIM
• Voice calls: Make and receive calls using a headset or external speaker and microphone
• SMS: Send and receive SMS messages

• Based on the SX1278 IC from SEMTECH
• Utilizes LoRa spread spectrum technology for enhanced range
• Functions as both a transmitter and receiver
• Ideal for long-distance wireless communication

• STM32F429ZIT6 microcontroller with 2MB Flash memory and 256KB RAM
• 2.4″ QVGA TFT LCD for display interface
• On-board ST-LINK/V2 with selection switch for standalone use
• 64 Mbit SDRAM for external memory support

• Triple output: 3.3V, 5.0V, and 12V
• 3.3V and 5V outputs with +/-0.05V tolerance
• 800mA max load current for 5V output
• Easy to use with multiple input and output pins

• Control 16 PWM outputs using just two I2C pins
• Stackable up to 62 shields for a total of 992 PWM outputs
• Built-in PWM driver with clock, no need for continuous signals
• 5V compliant, allowing control from a 3.3V