User Manual

6
PWM Ports (0-7)
The PiSmart Box uses PCA9685, 12-bits 4096-steps I2C output chip, for all PWM output.
On board PCA9685 I2C address is set to 0x40.
Channel 0~7 expose at PWM Port of PiSmart AI Box (PWM 0~7).
For more detail of PCA9685, Please visit http://www.nxp.com/products/interfaces/ic-bus-
portfolio/ic-led-controllers/16-channel-12-bit-pwm-fm-plus-ic-bus-led-controller:PCA9685
Analog Ports (0-4)
There's an Atmega328 in PiSmart Box as an ADC chip providing 5-channel 10-bit ADC on
analog port.
HDMI Video/Audio Connector
The PiSmart reserves the Raspberry Pi's High Definition Multimedia Interface (HDMI). It's a
digital/audio connector technology, and the HDMI port is a digital one dedicated to video
transmission - it can transmit audio and image at the same time in a high speed, with no
need of D/A or A/D signal conversion before transmission.
RCA Video/Audio Jack
The RCA standard video input port, or AV port of the RPi is also reserved on PiSmart. The RCA
technology is not specifically designed for certain ports - it can be applied to both audio
and general video signals.
Power Ports
Power voltage ranges from 6.5V – 12V; with a DC 5.5 - 2.1 connector.
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