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and a servo tester or PWM-capable controller
16 analog inputs: Useful for multi-sensor systems
I2C bus communication
Useful add-ons include USB-to-serial tools
A four buttoned RF controller that can work without an additional microcontroller
Bluetooth Shield (Master/Slave) for Arduino mobile platform and a servo tester orThe Bluetooth Shield integrates a Serial Bluetooth module. It can be easily used with Arduino Crowduino for transparent wireless serial communication. You can choose two pins from Arduino D0 to D7 as Software Serial Ports to communicate with Bluetooth Shield (D0 and D1 is Hardware Serial Port). It also expand five analog IOs that you can use it to connect other devices. The Bluetooth Shield could be setting to Master or Slave by user. Serial port
