To install the IO Pi simply press the 40 pin connector down onto the Raspberry Pi GPIO pins with the board sat over the top of the Raspberry Pi.
Xojo on odroid plus#
The IO Pi Plus is compatible with 20 pin IDC vertical and right angle headers allowing you to use ribbon cables to connect your external devices to the board. You can solder wires directly to the board or use 2.54mm pitch headers. The digital input pads are spaced 2.54mm apart. For your convenience we supply the IO Pi Plus with the power link jumper and one address selection jumper pre-soldered. The power link and I2C address selection are configured using solder jumpers. Before using the IO Pi Plus you will need to solder the connector onto the PCB. The IO Pi Plus is supplied with the 40 pin GPIO connector unsoldered. See our KB article for previous versions of this board. The 5V pin will also need to be connected if you are not using an external 5V power supply. To use the IO Pi Plus externally from the Raspberry Pi you will need to connect the 3.3V (Pin 1), SDA (Pin 3), SCL (Pin 5) and Ground (Pin 6) pins from the Raspberry Pi GPIO header to the corresponding pins on the IO Pi Plus. The 5V input is compatible with our 5mm screw terminals. Use of an external supply is recommended if you plan on connecting more than one IO Pi Plus to your Raspberry Pi. The IO Pi Plus includes a 5V port that can be isolated from the Raspberry Pi via an isolation solder jumper marked "Link" on the PCB so you can use a separate high current power supply to power the IO Pi reducing the load on the Raspberry Pi. The MCP23017 supports up to 8 different I2C addresses so with two MCP23017 devices on each IO Pi you can stack up to 4 IO Pi boards on a single Raspberry Pi giving a maximum of 128 I/O ports. The I2C address bits are selectable using the on-board solder jumpers. The IO Pi Plus is powered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allow you to stack the IO Pi Plus along with other expansion boards. A pair of MCP23017 expanders are included on the board allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi. The board is based around the MCP23017 16-bit I/O expander from Microchip Technology Inc. The IO Pi Plus is a 32 channel digital expansion board designed for use on the Raspberry Pi. Polarity Inversion register to configure the polarity of the input port data.Configurable interrupt source - Interrupt-on-change from configured register defaults or pin changes.INTA and INTB can be configured to operate independently or together.Configurable interrupt output pins - Configurable as active-high, active-low or open-drain.Based on the MCP23017 from Microchip Technologies Inc.External 5V Input with isolation solder jumper.Stack up to 4 IO Pi boards on a single Raspberry Pi.
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