Engineering FAQ · Wanlin
RK3399 Smart Cabinet Mainboard Manufacturer | Canada AndroidSBC
A: The two big A72 cores handle UI rendering and video while the four small A53 cores run background services, keeping the terminal responsive and cool in a fanless cabinet.
Direct answer
A: The two big A72 cores handle UI rendering and video while the four small A53 cores run background services, keeping the terminal responsive and cool in a fanless cabinet.
Executive Summary: RK3399 Smart Cabinet Mainboard for Canada Market

Product Introduction: AndroidSBC RK3399 Smart Cabinet Mainboard
Core Features:
- Proven Android Platforms: Rockchip RK3568 / RK3288 / RK3399 / RK3588 / RK3566 and Allwinner A133 with long-term supply commitments
- Lock Control Ready: RS485 / RS232 / GPIO interfaces with Modbus protocol, lock SDK and sample code
Technical Specifications
| Parameter | AndroidSBC Specification |
|---|---|
| SoC | Rockchip RK3399, dual-core A72 + quad-core A53 big.LITTLE |
| GPU | Mali-T860 MP4 |
| OS | Android 7.1 / 9 / 11 / 12 |
| Memory | 2GB/4GB LPDDR4 |
| Storage | 16GB/32GB eMMC, TF card, M.2 SSD option |
| Display | Dual HDMI 4K, eDP, MIPI-DSI |
| Camera | MIPI-CSI and USB camera for face recognition or QR scan |
| Lock control | RS485 x2, RS232, GPIO expansion |
| Network | Gigabit Ethernet, dual-band WiFi, 4G LTE module support |
Application Scenarios for Canada Market
| Scenario | Recommended model | Key benefits |
|---|---|---|
| Advertising-equipped lockers | LB-3399C (dual screen) | Pickup terminal plus revenue-generating ad display |
| Face recognition lockers | LB-3399C-FR (camera kit) | Camera-driven access with liveness detection |
| Government self-service cabinets | LB-3399C-21 (21.5 inch) | Document pickup with ID verification |
| Premium office lockers | LB-3399C-APP | Branded touch UI with corporate directory |
Q: What does big.LITTLE mean for a locker terminal?
A: The two big A72 cores handle UI rendering and video while the four small A53 cores run background services, keeping the terminal responsive and cool in a fanless cabinet.
Q: Can it drive two screens showing different content?
A: Yes. Dual independent 4K outputs support hetero display - one screen for user interaction, another for advertising or queue information.
Q: Is face recognition processed on the board?
A: Yes. The CPU and GPU run face detection and recognition models locally, with an optional NPU daughterboard for faster matching on large door counts.
Q: How does it handle 24/7 operation?
A: Hardware watchdog, scheduled power on/off, wide-temperature components and auto power-on after failure - designed for unattended cabinets.
Project Summary
For more information: www.androidsbc.com | Export Service Hotline: +8613261677119 | Email: Androidsbc@163.com
- Shenzhen HQ: Wanlin Group, Building B, Building 1, Beisida Medical Device Building, 28 Nantong Avenue, Baolong Community, Baolong Sub-district, Longgang District, Shenzhen, Guangdong, China
Application fit
Confirm the operating environment, workload, display, network and peripheral requirements.
Documents to confirm
Check the exact board revision, interfaces, firmware build and certification scope.
Commercial confirmation
Verify quantity, sample plan, lead time, warranty and delivery terms in writing.

