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Supports GPS satellite navigation technology
Earphone/ microphone outputs on a card or external 32-ohm speaker + supports voice calls with an electret microphone
letting you run up to 992 PWM outputs
0 GSM/GPRS Module is a QUAD BAND GSM/GPRS module which compatible with Arduino
Servo Driver Module Shield 16 Channel 12-bitPWM I2C Interface PCA9685 Supports GPS satellite navigation technologyPulse Width Modulation (PWM) is the method microcontrollers use to set LED brightness and the position of servos, so it is a pretty well understood technique. This 16 Channel 12 bit Interface lets you set these PWM signals to 16 devices through the convenient 2 wire I2C interface. Set your pin assignments over an I2C call, and forget it the chip will keep generating the signals until told otherwise. This breakout board is configured to allow up to 62
