IO Zero 32

SKU: CE08565 Brand: AB Electronics

32 channel IO expander for the Raspberry Pi B+ computer boards...

$22.34 AUD, inc GST

$20.31 AUD, exc GST

In stock, ships same business day if ordered before 2PM
Fastest delivery: Tomorrow* Disclaimer:
For next-day delivery, the shipping address must be in the AusPost next-day network, eParcel Express must be selected, and the order must be placed before 2PM AEST Mon-Thurs excluding NSW Public Holidays. Orders may be delayed due to AusPost pickup timings and order verifications. eParcel Express is typically a 1-day service within the AusPost next-day network, though it is sometimes 2+ days.

The IO Zero 32 is a 32 channel digital expansion board designed for use on the Raspberry Pi. The board is based around the PCA9535 16-bit I/O expander from NXP. A pair of PCA9535 expanders are included on the board allowing you to connect up to 32 digital inputs or outputs to the Raspberry Pi. The IO Zero 32 is powered through the host Raspberry Pi using the GPIO port and extended pins on the GPIO connector allow you to stack the IO Zero 32 along with other expansion boards.

The I2C address bits are selectable using the on-board solder jumpers. The PCA9535 supports up to 8 different I2C addresses so with two PCA9535 devices on each IO Zero 32 you can stack up to 4 IO Zero 32 boards on a single Raspberry Pi giving a maximum of 128 I/O ports.

The IO Zero 32 includes a voltage input 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 Zero 32 reducing the load on the Raspberry Pi. When used with an external power supply the IO Zero 32 supports a voltage range of 3.3V to 5V. The voltage input port is compatible with our 5mm screw terminals.

To use the IO Zero 32 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 Zero 32. The 5V pin will also need to be connected if you are not using an external power supply.

Note: This HAT requires soldering the 40-pin GPIO header onto the PCB

32 Digital Inputs/Outputs
Control via the Raspberry Pi I2C port
Stack up to 4 IO Zero 32 boards on a single Raspberry Pi
Solder jumper selectable I2C addresses
External 3.3V to 5V Voltage Input with isolation solder jumper
Based on the PCA9535 from NXP
Interrupt pins - Open drain interrupt outputs trigger when an input pin changes state
Polarity Inversion register to configure the polarity of the input port data

Code Libraries and Demos

AB Electronics have Python, C, C++, Node.js and .Net Core libraries available for this expansion board. You can download all of the libraries from github at:

https://github.com/abelectronicsuk/

Compatibility

Model	Status
Raspberry Pi Model A	No
Raspberry Pi Model B	No
Raspberry Pi 1 Model A+	Yes
Raspberry Pi 1 Model B+	Yes
Raspberry Pi 2 Model B	Yes
Raspberry Pi 3 Model B & 3+	Yes
Raspberry Pi 4B	Yes
Raspberry Pi Zero	Yes
Raspberry Pi Zero W / Zero 2 W	Yes
Orange Pi	Yes
Asus Tinker Board	Yes
Odroid	Yes

Specifications

Spec	Ratings
Vdd (when disconnected from 5V pin GPIO header):	3.3V - 5.5V
All digital inputs and outputs:	0 - Vdd
Maximum output current for an individual I/O Pin:	50 mA
Maximum overall current on a single I/O Bank (1 PCA9535 device):	160 mA
Interrupt maximum current:	3 mA

Datasheets

Download pca9535 Datasheet

Product Comments

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Adamstown
NSW, 2289
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