# Waveshare Pico Dual Expander — dual GPIO expander board 2 x 20 for Raspberry Pi Pico

**URL:** https://aio.lv/en/product--waveshare-wsr-19038--12004616
**Data updated:** 2026-03-11 18:37 (EET)
**Category:** Electronics Accessories
**Manufacturer:** Waveshare
**Manufacturer code:** WSR-19038
**EAN:** 5904422371685
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 12.49 €
**Prices and availability valid until:** 2026-07-12 23:59
**Price without VAT (21%):** 10.32 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--waveshare-wsr-19038--12004616

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 03.07.2026 | free |
| Pickup points | 08.07.2026 | 1.99 EUR |
| Courier delivery to door | 08.07.2026 | 4.99 EUR |

## Summary description

Waveshare Pico Dual Expander is a dual GPIO expander board that provides two 20-pin (2 x 20) GPIO connectors for the Raspberry Pi Pico. Designed to extend available I/O, it enables connection of multiple sensors, modules and peripherals while preserving Pico form factor. Use it for prototyping, embedded projects and expanding pin availability for development and testing.

## Long description

Waveshare Pico Dual Expander is a dual GPIO expander board designed specifically for the Raspberry Pi Pico. It provides two 20-pin (2 x 20) GPIO connectors that reproduce the Pico's I/O in an expanded, easy-to-access layout while keeping the Pico's compact form factor. The board is intended to increase available pin access for prototyping, development and embedded applications that require connecting multiple sensors, modules or peripherals.
Advantages
The Pico Dual Expander offers two full 20-pin connectors that mirror the Pico's GPIO, simplifying wiring and enabling simultaneous connection of multiple devices without crowding the Pico. Its compact design preserves the original footprint of the Raspberry Pi Pico while providing clearer signal routing and easier physical access to power, ground and I/O pins. The board reduces the need for jumper wires directly on the Pico pins, improving reliability during testing and repeated prototyping.
Suitable for
 Rapid prototyping and breadboard-free setups
 Embedded projects that require multiple sensor or module connections
 Development and testing where frequent pin access is needed
 Educational projects and electronics teaching labs
Key specifications
 Two 20-pin GPIO connectors compatible with Raspberry Pi Pico pinout
 Support for full set of Pico I/O including power and ground pins
 Compact board size that preserves Pico form factor for enclosure and rack compatibility
 Soldered or header-mounted connection style for secure mechanical and electrical contact
 Typical low-profile PCB suitable for tabletop development and breadboard alternatives
How to use
Install the Raspberry Pi Pico onto the expander by aligning the Pico board pins with the expander's 20-pin connectors and seating it gently until secure. After mounting, connect sensors, modules or peripherals to the expander's two 20-pin headers according to the Pico pinout. Ensure correct power and ground connections before applying power. Use standard GPIO libraries and tools for the Raspberry Pi Pico to address connected devices; no additional configuration is required at the hardware level beyond correct pin mapping.
Usage recommendations
For reliable operation, route power-hungry peripherals to separate power rails or supply lines rather than drawing large current through the Pico. Verify pin assignments for I2C, SPI and UART when connecting multiple modules to avoid bus conflicts. Use proper decoupling capacitors and secure header mounting for projects that involve vibration or frequent manipulation.

## FAQ

### How much does the Waveshare Pico Dual Expander — dual GPIO 2 x 20 cost, and is it available for purchase?

The price is 12.49 € (valid at the time of publication and already includes all taxes). The item is available for order — 16 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 03.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All Waveshare products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized Waveshare service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

## Image

https://aio.lv/img/cache/product/12004616/67459847_large.webp