Seeed Studio XIAO Expansion Base (OLED, RTC, microSD, Grove)
Seeed Studio XIAO Expansion Base (OLED, RTC, microSD, Grove)
Free shipping within Sweden from 470 SEK
Under 470 SEK: 65 SEK. Rest of the EU from 229 SEK, depending on weight. Every parcel is tracked.
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Volume pricing for schools and companies
Get a quote with price and lead time for larger quantities.
For schools, companies, clubs and project orders.
Pre-order. Delivery within the EU only.
The official carrier board for the Seeed Studio XIAO family. Plug any XIAO (ESP32C3, ESP32S3, RP2040, SAMD21, nRF52840) into the socket and you get a 0.96" OLED display, a real-time clock with battery holder, a microSD slot, a buzzer, user and reset buttons and a set of Grove connectors, so sensors and actuators connect without soldering. Ideal for prototyping and classroom use.
- 0.96" OLED display (SSD1306, I2C)
- Real-time clock (PCF8563) with coin-cell holder
- microSD card slot, passive buzzer, user button, reset button
- Grove connectors for I2C, UART and analog/digital I/O
- Li-ion battery connector with charging via the XIAO; USB-C and 5 V servo header
- Compatible with all XIAO boards (XIAO not included)
Sweden: 65 SEK. Free shipping on orders from 470 SEK.
Rest of the EU: from 229 SEK.
Rest of the world: from 199 SEK. Some items ship only within Sweden or the EU, and the product page says so when that applies.
Outside Sweden, shipping depends on the weight of the parcel, and you see the exact price at checkout before you pay. Every parcel ships tracked, and an order may arrive in separate parcels at no extra cost. Some items are ordered from our supplier when you place your order, and some are sold as pre-orders. The product page says so when that applies. More in our shipping policy.
You have 14 days from delivery to change your mind, no reason needed. Start a return or cancel an order from your account at account.gadwave.com. Return the item within 14 days of telling us. You pay the return postage to us in Kalmar, and we refund the item plus standard delivery within 14 days.
As a consumer you have a three-year right to complain about faults under Swedish consumer law. If something arrives broken or faulty, email gadwave@arnvak.com with your order number and photos, and we will replace it or refund you.
Full details in our returns and refund policy.