MP3 Player ModuleMP3 Player Module MP3 Module is one of Elecfreaks self developed modules inspired by JQ6500 24SS MP3 chipset of Jiaqiang Electronics. It supports SD cards for FAT16, FAT32 file systems and SPI Flash updates via PC. Via some very simple serial commands to control music playback, it owns the characteristics of easy operation and stable performance. Additionally, with an external headphone (PH) and an external speaker (SP), the MP3 Module provides more

74HC595 datasheet

It can also detect a human body that remains still

Since the transistors are either fully ON or fully OFF

11 - compliant module from Microchip

OV5642 5-Megapixels Brief

programmed by the I2C bus

USR-TCP232-410s Datasheet

PC2121-5M pH Industrial Electrode - 3551_0

Prevent electrostatic damage

Repeatability Dust: ±10%@100~500 μg/m3

like the Sharp sensors sold by Phidgets Inc

it is in AT operation