• Adjustable voltage step-up converter for 18650 Li-ion batteries
• Supports both charging and discharging functions
• Compact PCB module design
• Ideal for DIY power bank projects

• Supply voltage: 3.3 V to 5V
• Output can directly connected to controller
• TTL level output
• Maximum output current : 15mA

✔ High Precision Measurement – Onboard precision micro current transformer for accurate current sensing
✔ Op-Amp Circuit Board – Provides accurate signal sampling and appropriate compensation
✔ Adjustable Output – The analog output corresponding to current can be easily adjusted
✔ Wide Working Voltage – Operates within a range of DC 5-30V for versatile

• 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

• Dual H-Bridge Motor Driver: Capable of driving two DC motors or a 4-wire two-phase stepper motor.
• Built-in TSD: Protects the motor from stalling, ensuring smooth operation.
• Ultra-Small Size: Ideal for assembly and use in compact projects like smart cars or robots.

• Adjustable gain of 1.5 to 1000x
• Adjustable offset
• 120kHz bandwidth (gain = 100x)
• Input signal range of 100uV – 300mV

• Onboard AMS1117-3.3 chip for stable 3.3V output
• DC input voltage range: 4.75V to 12V
• Self-locking switch: Easily turn power on/off during testing
• Power indicator light: Indicates whether the power is on

• Input Voltage Range: 4V to 38V DC (up to 38V).
• Output Voltage Range: 1.25V to 36V DC (adjustable).
• Maximum Output Current: 5A.
• High efficiency of up to 96%.

• High Current Capacity: Can drive up to 43A with the BTS7960B motor driver.
• PWM Control: Controlled via PWM1 and PWM2 signals, providing efficient speed and direction control.
• Wide Voltage Range: Operates with 5.5V to 27V power supply.
• Power Indicators: On-board 5V power indicator and motor driver output voltage indicator.

• Supports working voltages of 6-30V and micro USB 5.0V power supply
• High-level trigger (3.0V-24V) for signal input
• Adjustable timing range from 0.1s to 999 minutes
• Can control equipment up to DC 30V 5A or AC 220V 5A

• High Accuracy: ±1% accuracy, ideal for precise current measurements.
• Wide Frequency Range: Suitable for 50Hz to 1KHz frequency applications.
• High Dielectric Strength: AC 3500V/1min dielectric strength for enhanced safety.
• Durable Construction: Flame resistance rated UL94-V0 and withstands temperatures between -25°C to +60°C.

• Supports FAT file system SD carrier
• Supports playing of 4Bit ADCPM format files
• Recognize the voice files automatically
• Support microprocessor and key control

The PIC16F628 is a powerful and easy-to-program CMOS Flash-based 8-bit microcontroller from Microchip. It features the robust PIC® architecture, making it suitable for a wide range of applications, including automotive, industrial, appliances, and consumer electronics. This microcontroller is designed for low voltage programming and offers a variety of features that enhance its versatility and performance.

• 2-in-1 charge and discharger (boost) module
• Charging voltage: DC 4.5V-8V (Recommended DC 5V)
• Full charge voltage: 5V ±2%
• LED indicator for charge status ("OK" for full charge or battery failure, "CR" for charging)

• High Efficiency: Provides up to 93% efficiency in voltage conversion
• Adjustable Output: Easily adjustable output voltage from 5V to 28V
• Compact & Low-Cost: A cost-effective solution for stepping up voltage
• Current Handling: Can provide up to 2A of output current

• High-accuracy temperature measurement from -200°C to 1350°C.
• Compact and durable design for various applications.
• Compatible with K-type thermocouples.
• SPI communication interface for easy integration.