The Raspberry Pi is an amazing single board computer - and one of the best parts is that GPIO connector! 40 pins of digital goodness you can twiddle to control LEDs, sensors, buttons, radios, displays - just about any device you can imagine. This Adafruit GPIO Expander Bonnet will give you even more digital deliciousness - 16 more digital input/output pins are yours for any desire you have. The outputs are grouped into two 16-pin connectors that have a matching ground pin. You can set each pin to be a digital output (high or low) or as an input, with an internal pull-up if you like!.

Simply pop the Bonnet on top of your Pi, the circuitry connects to the SDA/SCL I2C pins for control. The MCP23017 chip converts our Python commands to pin instructions.

When used as an output, each pin can supply up to 20mA (current clamped) - so you can drive LEDs directly. The datasheet recommends you keep the total current draw to under 125mA for the whole chip. We set up the expander chip for 5V logic by default (the I2C is level shifted so that's 3V logic). We did that so you can drive white, blue or green LEDs that sometimes aren't too happy with 3.3V logic. Or, you can cut/solder a jumper to change it to 3.3V logic.

When used as an input, you can set up a pull-up resistor so buttons and switches don't need extra resistors - just wire the pin to one side and ground to the other! There's interrupt capabilities on the chip, and two IRQ pins (INTA and INTB) you can solder a wire to, if you want to have a quick way of telling if any of the GPIO's changed.

By soldering close the address select jumpers, you can change the address from 0x20 up to 0x27. So, if you wanted to, you could have up to 8 bonnets for 128 total GPIO.

Comes as an assembled and tested Bonnet with slim 2x20 header connector on the bottom. We provide 2 sets of 16-pin IDC sockets, you can solder these in or leave them off for a slim setup. Follow our guide to use our CircuitPython library with Python 3 for fast and easy setup and configuration, you'll be running in under 5 minutes.

Works with any Raspberry Pi computer, including the original Pi 1, B+, Pi 2, Pi 3, Pi 4, and Pi Zero.



Documents : 
Details : 
  • Product Dimensions: 65.0mm x 30.6mm x 5.6mm / 2.6" x 1.2" x 0.2"
  • Product Weight: 10.4g / 0.4oz
Package Includes : 
  • 1 x Adafruit 4132 GPIO Expander Bonnet - 16 Additional I/O over I2C

Write a review

Please login or register to review

Adafruit 4132 GPIO Expander Bonnet - 16 Additional I/O over I2C

  • Brand: Adafruit
  • Product Code:Ada-GPIO-Expander-Bonnet-I2C
  • Reward Points:11
  • Availability:In Stock
  • रo 1,074.00

  • Price in reward points:1135

  • 45 or more रo 940.00
  • 145 or more रo 935.00

Related Products

WIRELING PI HAT

WIRELING PI HAT

This Pi Hat allows users to add Wirelings to their Pi projects. Featuring a 4-channel Multiplexer, R..

रo 1,278.00

FEZ Hat

FEZ Hat

The FEZ HAT allows for a Fast and Easy (FEZ) way to connect all kinds of sensors and devices to the ..

रo 5,185.00

Pan-Tilt HAT

Pan-Tilt HAT

Ideal for a mini CCTV system, this set of horizontal and vertical motion servos will give you Pi cam..

रo 2,504.00

Raspberry Pi 4 Model B

Raspberry Pi 4 Model B

Raspberry Pi 4 Model B is the latest product in the popular Raspberry Pi range of computers. It offe..

रo 3,960.00

ANAVI Infrared pHAT

ANAVI Infrared pHAT

ANAVI Infrared pHAT is an open source hardware add-on board that converts your Raspberry Pi into a s..

रo 2,670.00

ANAVI Light pHAT

ANAVI Light pHAT

wwwwws your Raspberry Pi bright and shiny with an RGB LED strip and ANAVI Light pHAT ANAVI Light..

रo 3,485.00

ANAVI Play pHAT

ANAVI Play pHAT

ANAVI Play pHAT is a super simple, low cost open source hardware add-on board for Raspberry Pi with ..

रo 2,244.00

Raspberry Pi 400 Personal Computer

Raspberry Pi 400 Personal Computer

Raspberry Pi 400 Personal Computer is basically a keyboard, combined with a custom-designed PCB that..

रo 6,210.00

Adafruit 5146 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT

Adafruit 5146 24LC32 I2C EEPROM Breakout - 32Kbit / 4 KB - Stemma QT

If you want to store calibration values, MAC addresses, non-secure access tokens, or other unique id..

रo 426.00

Tags: Adafruit, GPIO, Expander, Bonnet, I/O, I2C

The product is currently Out-of-Stock. Enter your email address below and we will notify you as soon as the product is available.

Name
Email
Phone
Comments