Wonrabai MCP23017 IO Expansion Board Expands 16 I/O Pins I2C Interface Compatible with Raspberry Pi Micro:bit STM32
Why you'll like it
- Expanded Connectivity — Converts two signal pins into sixteen bidirectional I/O channels using the I2C communication protocol.
- Scalable Architecture — Supports stacking up to eight expansion modules concurrently on a single bus to achieve 128 total I/O ports.
- Voltage Versatility — Includes an onboard voltage translator ensuring complete compatibility with both 3.3V and 5V logic levels.
- Flexible Integration — Provides dual connection options with PH2.0 terminals and standard solder pads for easy circuit assembly.
Product details
Description
The Wonrabai MCP23017 IO Expansion Board is an essential tool for electronics hobbyists and engineers looking to maximize their microcontroller capabilities. By utilizing the I2C communication bus, this module efficiently converts just two signal pins into sixteen bidirectional digital input and output lines.
Designed for versatility, it features an onboard voltage translator that seamlessly supports both 3.3V and 5V logic levels, making it fully compatible with popular development platforms like Raspberry Pi, micro:bit, Arduino, and STM32. Users can easily daisy-chain and stack up to eight expansion boards simultaneously on a single bus, scaling up your project's capacity to an impressive 128 total I/O ports.
Configuration is straightforward thanks to the adjustable A0, A1, and A2 address jumpers, while dual connection options including PH2.0 terminals and standard solder pads ensure flexible integration into any custom circuit design. Whether you are building complex sensor arrays, automation systems, or custom hardware interfaces, this expansion module provides reliable performance and extensive expansion potential for advanced DIY electronics projects.
How to use
Connect the I2C interface pins (SDA and SCL) to your microcontroller, supply 3.3V or 5V power, configure the address jumpers if stacking multiple modules, and reference the provided online development resources and pin definitions to integrate the expanded I/O lines into your project code.
Ingredients
Not applicable for electronic hardware components and expansion boards.
As printed by the brand. Check the pack label if you have an allergy.
Specifications
| Brand | Wonrabai |
|---|---|
| Ships from | USA (sourced directly), checked in Navi Mumbai |
| Sold by | Dropy.in |
Ratings & reviews
From our customers
Top reviews first: highest rated, with photos first
- Snehal K.5 ★
bag madhe thevayla mast aahe
mi he expansion board bag madhe gheun college la jaate karan project work sathi lagte. address jumpers adjust karun multiple boards stack karnyasathi khup convenient ahe.
- Amit S.5 ★
friend ne suggest kiya tha
mere ek colleague ne bola ye board try karne ko. i2c bus se connect hota hai aur aaram se 3.3v aur 5v dono logic levels par kaam karta hai. wiring kaafi simple ho gayi.
- Rohan D.5 ★
does the job perfectly
using this everyday before going to office for my home automation project. saves a lot of microcontroller pins by using just two signal pins for all sixteen lines. very handy module.
FAQs
What is the function of the MCP23017 IO Expansion Board?
The MCP23017 IO Expansion Board uses an I2C bus interface to convert two microcontroller pins into sixteen general-purpose digital input and output lines, significantly increasing your project connectivity.
Can multiple expansion boards be used at the same time?
Yes, you can stack up to eight expansion modules simultaneously on the same I2C bus by configuring their unique addresses via the onboard jumpers, providing up to 128 total I/O ports.
Which microcontrollers are compatible with this board?
This expansion board is fully compatible with popular hardware platforms including Raspberry Pi, micro:bit, Arduino, and STM32 systems.
Are these imported USA products authentic when purchasing through Dropy?
Yes, Dropy sources all its products directly from authentic suppliers in the USA, ensuring you receive genuine, high-quality items delivered right to your doorstep in India.
Does the board support different logic voltage levels?
Yes, it features an integrated onboard voltage translator that makes it fully compatible with both 3.3V and 5V logic level systems.
How long will delivery take?
Most orders arrive in 15–20 days: we source each product directly from the USA, check it at our Navi Mumbai warehouse and pack it on video. Items marked Dropy Express ship from our India warehouse and arrive in 3–5 days.
Is cash on delivery available?
Full cash on delivery is available all over India on Dropy Express items. For other orders from ₹2,499 to ₹15,000 you can use Partial COD: pay 25% online now and the rest in cash on delivery.
Are your products genuine?
Yes. Every product is 100% authentic, sourced directly from the USA, quality-checked and packed on video at our Navi Mumbai warehouse.
What if my order arrives damaged or wrong?
Write to us at [email protected] as soon as it arrives. Damaged, wrong or not as described, our Buyer Protection gives you a full refund. The details are in our Return, Refund & Cancellation Policy.
Is delivery free?
Delivery is free on orders from ₹1,499. Below that a ₹79 delivery fee applies.