DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. Compared to the DS1302 solution, the DS3231 has many advantages, it function with a VCC ranging from 2.3V to 5.5V and has a battery backup. Unlike the DS1307, the DS3231 also has an integrated...
If you are searching an ultrasonic ranging module, the HC-SR04 is good choice: Its stable performance and high ranging accuracy make it a popular module in electronic market. It's cheaper than an IR range finder with similar range accurancy and distance.
PN532 NFC module, as its name implies, is based on PN532 chip and used for 13.56MHz near field
communication. The module is equipped with onboard antenna, thus no external antenna coil is needed.
It is compatible with SPI, IIC and UART interface for communication. With NFC library support for Arduino
and Raspberry Pi offered by us, it is quite...
Small and exquisite appearance, it is convenient to carry.
Full-automatic induction, excellent sensitivity.
One kind of trigger modes, it is easy to operate.
Stable reliability, ultra low voltage operating mode.
It can be widely used in many kinds of automatic induction electric equipment.
Suitable for movement detection, automatic control, proximity...
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