The A-Star 32U4 Prime SV (SMT Components Only) is a versatile programmable board designed around the ATmega32U4 AVR microcontroller, arranged in the widely recognized Arduino form factor. This particular configuration is tailored for users who prefer to customize their assembly, as it excludes microSD support and through-hole components. The board is compatible with numerous Arduino shields, leveraging the microcontroller's 26 GPIO lines, which include PWM outputs and analog inputs.
A notable feature of the A-Star 32U4 Prime SV is its advanced power management system, which supports efficient operation from a 5 V to 36 V external source. The board utilizes a switching step-down regulator to maintain a stable 5 V output, ensuring reliable performance across various input voltages. This configuration is ideal for projects requiring a robust power supply, as it can seamlessly switch between power sources while providing overcurrent protection.
The A-Star 32U4 Prime SV is equipped with a native full-speed USB interface, allowing it to function as a virtual serial port, mouse, or keyboard when connected to a computer. This enhances its versatility compared to boards relying on USB-to-serial adapters. The board is preloaded with an Arduino-compatible bootloader, facilitating easy programming through the Arduino environment.
Note: Batteries can have much higher voltages than their nominal voltages when fully charged, so be cautious with nominal voltages above 24 V. A 36 V battery is not suitable for this product.
1x A-Star 32U4 Prime SV (SMT Components Only)
2.8″ × 2.1″ (common Arduino form factor)
Programmable ATmega32U4 microcontroller with 32 KB flash, 2.5 KB SRAM, 1 KB EEPROM, and native full-speed USB
Preloaded with an Arduino-compatible bootloader
All 26 general-purpose I/O lines from the ATmega32U4 are accessible
Includes 7 hardware PWM outputs
Provides 12 analog inputs
Features convenient 0.1"-spaced power, ground, and signal connection points
Can be powered via USB or an external source
SV operating range from 5 V to 36 V
Equipped with a switching 5 V regulator for efficient operation
3 V rail supplied by a 300 mA linear regulator
Includes a power switch for external power inputs
Reverse-voltage protection on external power inputs
Power selection circuit allows seamless switching between power sources
6-pin ISP header available for use with an external programmer
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.
United Kingdom consumers exercising their statutory Right of Cancellation are subject to different conditions. See the Statutory Right of Cancellation.
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 Authorisation (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, tyres, 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, odour-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 fulfil a customer request.
* United-Kingdom consumers retain their statutory Right of Cancellation on these items. Its exercise is subject to the conditions and exclusions set out in the Statutory Right of Cancellation, and any reimbursement may be reduced to reflect a loss in value resulting from handling beyond inspection.
How to Request a Return Authorisation (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]".
