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Engineering FAQ · Wanlin

Dining and service desks: Board Qualification

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Direct answer

Review Dining and service desks requirements, interfaces, software and acceptance scope. Confirm the exact model configuration against current controlled project documents.

Published configuration: confirm against controlled documents

The AS-RK3568-RSC-CUS carrier board is a 6-layer PCB in a 3.5-inch SBC form factor, industrial-grade components throughout, with conformal coating optional. The specifications below are the OEM/ODM default; every line is re-specable on request.

BlockSpecification
SoCRockchip RK3588 octa-core Cortex-A76/A55 up to 2.4GHz; RK3568 / RK3566 quad Cortex-A55; RK3399; RK3288; Allwinner A133 on the value tiers
NPURK3588 6 TOPS INT8; RK3568 1 TOPS; value tiers without NPU
GPURK3588 Mali-G610 MP4; RK3568 Mali-G52 2EE; A133 PowerVR GE8300
MemoryLPDDR4 / LPDDR4X / LPDDR5, 2GB to 16GB depending on tier
StorageeMMC 5.1 8GB / 16GB / 32GB / 64GB / 128GB; UFS 2.1 option; TF card; M.2 NVMe on the RK3588 carrier
DisplaySingle, dual or triple independent outputs: LVDS / eDP / MIPI DSI / HDMI; 1920x1080, 3840x2160 or 7680x4320 decode; independent or mirrored; portrait or landscape per output
TouchCapacitive 10-point / 20-point; dual touch controllers on request; IR touch on request
Ticket and printThermal ticket printer, receipt printer, ticket dispenser, barcode imager, QR reader, document printer, A4 printer option; current-budgeted rails
Calling and audioOn-board audio decode, amplifier control, voice broadcast module, speaker module, microphone input, per-counter and per-zone volume, runtime multi-language voice packs
Display networkWindow screen, counter display, waiting area display, room display, hall display status board; multicast push so 60 displays refresh from one host; LED controller and LCD controller options
Identity and paymentID card reader, bank card reader, NFC reader, RFID reader, fingerprint reader, face recognition option, QR payment
CameraMIPI CSI 2-lane / 4-lane, ISP, 30 fps capture for people counting and document capture
I/O4x USB 2.0, 2x USB 3.0, RS232 / RS485, up to 6 isolated serial ports, GPIO island up to 32 channels, relay, PWM, I2C, SPI, CAN bus
SecuritySecure boot chain, trusted execution environment, trusted platform module option, discrete secure element, hardware key storage, signed audit trail
NetworkDual Gigabit Ethernet, PoE+ option, WiFi 5 / WiFi 6, Bluetooth 5.0, 4G LTE / 5G module, SIM slot, GPS option
OSAndroid 11 / 12 / 13 / 14 / 15; Linux; Ubuntu; Debian; Kylin OS; UOS; OpenHarmony; AOSP; GMS or GMS-free; kiosk mode; runtime locale packs
Power12V DC standard; wide-voltage 9-36V on request; PoE+ on request; hold-up capacitor for brownout ride-through; RTC wake and scheduled power profile
Thermal and reliabilityFanless 6-layer carrier; 0C to 50C standard, -20C to 70C wide temp; 46C glazed-hall rating; 24/7 duty; hardware watchdog; RTC backup; ESD and EMC design
Form factor3.5-inch SBC, Pico-ITX, Mini-ITX, or core board plus custom carrier; counter-top, floor-standing and wall-mounted enclosures

Application matrix: 8 customization scenarios for the AS-RK3568-RSC-CUS

The AS-RK3568-RSC-CUS is one carrier platform across eight different queue terminal deployments. The matrix below shows the most common OEM/ODM customization angles a restaurant chain operations lead in Southeast Asia walks through in the first scoping call.

ScenarioCatalog board limitAS-RK3568-RSC-CUS customization
Hospital and clinic ticket terminalPrinter brownout, no on-board audioBudgeted printer rail, on-board audio path
Bank branch queue kiosk3.7 s card read, no secure elementUnder 800 ms read plus issue, discrete secure element
Government and tax office counterOne serial port, 40 s session timeoutThree-function serial map, 20-minute offline hold
Window screen with voice calling11 s refresh poll, single-line renderPush refresh under 1 s, multi-line layout
Restaurant and service centre terminalOne serial port, cloud-only queue tableMulti-port serial map, on-board local queue table
Dual-screen ticket plus advertisingMirrored output, 380 ms driftTwo framebuffers, per-screen proof-of-play
Multi-zone waiting area network60 unicast polls, blanking on a blipMulticast push, local content mirror
Multi-platform queue familyFour carriers, two contractsOne enclosure, one BSP train, one MOQ

OEM/ODM workflow: 8 steps from kickoff to first article

Below is the actual OEM/ODM workflow a restaurant chain operations lead in Surabaya walks through when commissioning a custom queue management kiosk Android motherboard from AndroidSBC. No step is a placeholder.

  1. Day 0-2 — Requirements intake. A 90-minute call captures the counter format, the I/O map, the language and voice list, the OS choice, the calling workflow, the print and pager peripherals and the volume profile. Output: a one-page requirements sheet.
  2. Day 3-6 — Feasibility study. AndroidSBC engineers validate the SoC choice (RK3588, RK3568, RK3566, RK3288, RK3399 or A133), the carrier I/O map, the BSP availability, the certification gap and the thermal envelope. Output: a feasibility report with go / no-go on each customization.
  3. Day 7-10 — Schematic and PCB layout. The AS-RK3568-RSC-CUS carrier board is laid out on a 6-layer stack-up with the customer's I/O map. Output: schematic and PCB review package.
  4. Day 11-14 — BSP porting. Android, Linux, Ubuntu, Debian, Kylin OS, UOS or OpenHarmony BSP is ported to the customer's OS choice, with PREEMPT_RT patches, kiosk-mode locking, secure boot, runtime voice packs and multicast display support where needed. Output: a BSP build for the customer's evaluation team.
  5. Day 15-18 — Sample fabrication. Five to ten engineering samples are fabricated at the Shenzhen source factory, with conformal coating and stencil rework as required. Output: samples shipped to the customer by air.
  6. Day 19-21 — Customer evaluation. The customer's evaluation team runs thermal, EMC, print, calling-latency, audio and field-replication tests. Output: an evaluation report with sign-off or change requests.
  7. Day 22-23 — Design freeze and mass-production tooling. Any change requests are absorbed, the design is frozen, and mass-production tooling is opened at the source factory. Output: a frozen Gerber and a frozen BOM.

Twenty-eight days from kickoff to first article. Ninety days from kickoff to mass production. This is the OEM/ODM rhythm that the restaurant chain operations lead in Southeast Asia learns to expect from a Shenzhen source factory that does this work for a living.

Frequently asked questions

What is the MOQ for a custom queue management kiosk Android motherboard?
Answer: 150 units for OEM (a re-spin of an existing carrier board), 500 units for ODM (a from-scratch PCB layout). Sample orders of five units are accepted with an engineering report.

How long does OEM/ODM customization take from kickoff to first article?
Answer: 28 days on the workflow described above, including schematic, PCB layout, BSP porting, sample fabrication and customer evaluation. Mass production starts around day 90.

Should I choose RK3588 or RK3568 for a queue kiosk?
Answer: RK3588 for dual-screen ticket plus advertising kiosks and multi-zone display controllers with heavy video; RK3568 for hospital ticket terminals, bank branch kiosks, government counters, window displays and restaurant terminals where 1 TOPS and 4K dual display are sufficient; A133 or RK3566 for cost-driven ticket and display tiers. AndroidSBC builds all of them on the same enclosure cut-out.

Can the board keep issuing tickets when the server is unreachable?
Answer: Yes. The on-board queue table and the non-volatile ticket counter keep issue running offline, and the branch or clinic call order survives a hard power cut.

Can the window screen refresh within a second of a call?
Answer: Yes. Call events are pushed rather than polled, with sub-second window screen refresh, sub-400 ms voice announcement and a local content mirror so a zone keeps showing the last call during a network blip.

Can one host drive sixty zone displays?
Answer: Yes. A multicast receive path lets 60 waiting-area displays refresh from one queue host, with sub-800 ms propagation across five rooms and per-zone language selection.

Do you support multi-language voice announcements?
Answer: Yes. Runtime voice packs are selected per counter or per zone with no per-language re-spin of the firmware image, including right-to-left layouts where the market requires them.

Can the board drive a printer, a card reader and a pager base at once?
Answer: Yes. The peripheral power tree is budgeted for ticket printer, card or ID reader, scanner, pager base and voice module together, with isolated rails and soft-start sequencing so nothing browns out at peak.

What certifications can you pre-scope for our market?
Answer: CE / FCC / RoHS standard. UL / UKCA / KC / PSE / SAA, GMS / Google EDLA and payment pre-scoping are all available on request. EMC pre-scanning is done in-house before third-party testing.

Do you accept sample and small-batch orders?
Answer: Yes. Samples ship in 1-3 days from stock where available; custom samples ship inside the 15-18 day window. Small-batch and large-volume pricing is available on request.