But this requires a monitor, keyboard and mouse connected to the Pi.Ī momentary on push button installed at the edge of the board provides a convenient way to shut down the Raspberry Pi. To prevent this, a shutdown command needs to be used before power cut-off. Shutting down the Raspberry Pi by turning off the power can result in SD Card failure. The board is protected to accidental reverse power supply with a 5.8A, 39 mOhm MOSFET which breaks the ground line if reverse power is applied. Cards can be installed in any order. A three position jumper selects the stack level.įor your convenience, two jumpers are provided with each card.
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Each card is identified by jumpers you install to indicate the level in the stack. Up to eight cards can be stacked on your Raspberry Pi. Inputs 1-8 or 9-16 can be selected from a jumper or from a Raspberry Pi GPIO pin. Due to space limitations, eight LEDs shows the status of groups of 8 inputs. LED INDICATORSĪ power LED shows when power is applied to the board. If power is applied to the 2 pin pluggable connector, no other power supply is needed for the Raspberry Pi.
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The card needs 5V to operate and can be powered from Raspberry Pi or from it's own 2 pin pluggable connector. This feature leaves the remaining 24 GPIOs available for the user. All stacked cards share the I2C bus using only two of the Raspberry Pi’s GPIO pins to manage all eight cards. The card is compatible with all Raspberry Pi versions from Zero to 4. Pluggable connectors make the 16-INPUTS card easy to use when multiple cards are stacked up. It has also an RS-485 port, a power LED and a push button that can be used to shut down the Raspberry Pi. The card communicates with Raspberry Pi using only the I2C port, leaving all the other 24 GPIO pins available for your use.
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Input ranges can be jumper-selected for each channel, from 3 volts to 24 volts. The card has 16 optically isolated digital inputs. Since all GPIO pins are wired directly to the local processor, some hardware is required to connect them to the real world. Raspberry Pi can read 26 Input signals through the GPIO header, but sometimes you might need to read more. 8 LEDs showing status of groups of 8 inputsĭESCRIPTION SIXTEEN UNIVERSAL INPUTS for RASPBERRY Pi.Sixteen universal opto-isolated inputs 3V-24V AC/DC.