Gravity: Vibration Motor Module For Arduino
Introduction Have you ever wondered how to implement a vibration motor in your project, like you would find in a mobile phone? The latest vibration module in the DFRobot "Gravity" series will give you in-depth understanding of the principles of vibration motors. This module uses a high quality vibration motor that is the size of a coin. With this little vibration motor module, you can make some interesting Arduino projects such as an alarm, a notifier or even a vibrating robot!

Project 1. How to Make a Running Heart Alarm T-shirt
A DIY heart-rate wereable in a running t-shirt that vibrates when your heart-rate is high, using DFROBOT components:
Component List:
vibration motor module for arduino
heart rate monitor sensor arduino
Specification
Christmas is coming, any ideas for Christmas gifts now? I was trying to seek online for a long time to find special and surprising gifts for my loved ones, but finally, nothing. It seems hard to discover unique presents. Well, at last, I determined, this year, I am gonna spend time on making a special gift box. This box will be opened only when shaken to the right directions in order.
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