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SG3525 PWM Controller Module Adjustable Frequency 100-400kHz 8V-12V

TSL2591 High Dynamic Range Digital Optical Sensor IIC I2C TSL25911FN Light Sensor Board 3.3V 5V For Raspberry Pi

3.7V 4.2V 5V 100mA Micro-Lipo Charger USB Battery Charging Board Micro-B Connector Lithium for LiPoLiIon V1

AT42QT1070 5-Pad 5 Key Capacitive Touch Screen Sensor Module Board DC 1.8 to 5.5V Power For Standalone Mode

PCF8523 RTC Module Digital Board PCF8523 Real Time Clock RTC 3.3V 5V for Arduino Raspberry Pi