針對 Xadow 穿戴系列所設計的蜂鳴器模組，常用於警示提醒、動作提示音。This is a Xadow module which can emit a tone. To drive it, you need to give control to two pins simultaneously: this is different from Grove – Buzzer which uses one pin to control. It is petite but loud! It can be used for making beeps, tones and alerts.
Xadow Compass is a 3-Axis Digital Compass which is a member of Xadow family. The module is based on a low field magnetic sensor HMC5883. It features 1° to 2° compass heading accuracy, and it is using I2C serial bus to communicate with your microcontroller. Xadow Compass is a useful tool for helping you to get the direction information.
Sometimes, you always want to know what time it is. Whether I have missed the dating or not, or if it is the mealtime for my three months child. The RTC module can provide you a real-time clock. You can make the controller ask the module: hi,buddy, what time it is. At the same time, do not forget to install a small coin cell which can serve you for more than six mouths.
Xadow UV Sensor is suitable for measuring the UV radiation in sunlight. It can detect the UV wavelength of 290 ~ 400 nm. The UV Sensor is outputting digital voltage value corresponding to UV light intensity. With the diagram of output voltage and UV, we can easy to know the current UV index. The Xadow UV Sensor can be powered by 3.3V. And it is compatible with Xadow system.