M5Stack CardKB2 Keyboard Unit (ESP32-C61)
Description
- M5Stack CardKB2 Keyboard Unit (ESP32-C61, 2.4 GHz Wi-Fi 6)
- Experience compactness with a 42-key, card-sized keyboard
- Leverage versatile connectivity via Wi-Fi 6, I2C, UART, BLE HID, ESP-NOW
- Utilize the onboard USB Type-C for power and firmware updates
- Benefit from the RGB LED for clear status indication
- Designed for portability at just 84.7 x 54.3 x 1.0mm
The M5Stack CardKB2 Keyboard Unit (ESP32-C61, 2.4 GHz Wi-Fi 6) is a compact, card-sized 42-key keyboard designed for portability and embedded applications. It is powered by an ESP32-C61HF4 microcontroller with integrated Wi-Fi 6 support, offering versatile configuration through I2C, UART, BLE HID, and ESP-NOW communication modes. The unit includes an expansion interface and a USB Type-C port for power and firmware updates. It is equipped with an RGB LED status indicator, reset button, and Boot button, making it suitable for wireless input and interactive control in various portable scenarios.
- 1x M5Stack CardKB2 Keyboard Unit (ESP32-C61, 2.4 GHz Wi-Fi 6)
- 1x HY2.0-4P Grove Cable (20cm)
- 84.7 x 54.3 x 1.0 mm
- SoC: ESP32-C61HF4, RISC-V 32-bit single-core, 120 MHz
- Flash Memory: 4MB
- Wi-Fi: 2.4 GHz Wi-Fi 6
- Keyboard: 42 keys, 1 Reset button, 1 Boot button
- USB Type-C: Power supply and firmware flashing, default firmware log output at 115200bps, 8N1
- LED: 1 RGB LED
- Expansion Interface: 1 HY2.0-4P
- Standby Power: 5V at 19.31mA under Grove interface power supply conditions
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Refund Policy
If you are not satisfied with a product purchased from the Site, you may request a return within 30 days from the delivery date, unless the product is listed under the Return Exceptions below or is subject to specific return conditions noted on the product page.
This return policy also applies, as a minimum standard, to products sold and fulfilled by third-party vendors through the Marketplace.
Please review the Return Conditions, Return Exceptions and the process on How to Request a Return Authorization (RA) before initiating a return request.
Returns under this policy concern non-defective products. In the case of a confirmed manufacturing defect, remedies are handled under the Warranty terms, at the Vendor's discretion. See the Warranty section.
Return Conditions
To qualify for a refund under the 30-day return policy, all of the following conditions must be met:
- A valid Return Authorization (RA) number must be obtained prior to returning the product. Returns without an RA number will be refused.
- The RA number is valid for 30 days. The returned item must be received within that period.
- The RA number must be included with the return.
- Products must be returned in unused, unmodified condition (e.g., no scratches, alterations, missing parts, or signs of installation/use) and in their original packaging, suitable for resale.
- Shipping fees are non-refundable. Return shipping costs are the responsibility of the customer, except in cases of a product confirmed defective through RobotShop's troubleshooting process or of a verified shipping error by RobotShop.
- Refunds are processed within 7 days after receipt and inspection of the returned item.
- A $100 cleaning fee may apply to domestic robots returned in used or unclean condition.
- A 20% restocking fee may apply to large-quantity returns of items ordered specifically for the customer from the manufacturer or not part of RobotShop's standard inventory.
Return Exceptions
The following products are not eligible for return or refund under this policy:
- Used, damaged, or modified products — Items that show signs of use, wear, or alteration, making them unsuitable for resale.
- Consumables — Use and wear-and-tear components, altered or depleted through use (e.g., batteries, belts, brushes, gears, filament, tires, disposable bags, lubricants, greases, waxes, etc.). Not eligible for return once opened or used.
- Perishables — Goods liable to deteriorate or expire rapidly. Not eligible for return.
- Sealed goods (health or hygiene) — Items sealed for health-protection or hygiene reasons (e.g., masks, gloves, odor-absorbing products). Not eligible for return once unsealed.
- Build-it-yourself products and items requiring customer assembly — Including robots & kits, robot parts, and other products requiring assembly or soldering. Not eligible for return once assembled, soldered, or installed.
- Digital Goods, Software, and Apps — Final sale only, due to licensing restrictions.
- Clearance Items — Products identified as clearance or final sale, including end-of-life or discontinued items.
- Custom-made, personalized, or special-order items — Products manufactured, configured, adapted, or built to the customer's own specifications and requirements.
- On-Demand Items — Standard catalogue products not stocked by RobotShop and ordered specifically to fulfill a customer request.
- Professional & Specialized Equipment — See the Professional & Specialized Equipment Warranty page and Professional & Institutional Buyers (B2B) section in the Terms & Conditions.
How to Request a Return Authorization (RA)
While the same return policy applies, these orders require a separate contact process for returns.
- RobotShop Fulfilled Orders → submit a support ticket from your account under My Support Tickets.
- Marketplace Vendor Orders → submit a ticket from your account under My Marketplace Tickets to contact the vendor directly.
Note: Marketplace vendor products are normally labelled with SKUs starting with RM, and identified on the product page with the mention "Sold and fulfilled by [Vendor Name]".