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Engineering FAQ · Wanlin

Continuous-Operation Convenience Store POS Board Requirements

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Direct answer

Review Continuous-Operation Convenience Store POS Board Requirements using the actual interfaces, software, environment and acceptance evidence. Confirm the exact configuration against controlled project documents.

Published configuration: confirm against controlled documents

The AS-RK3568-CVS-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 RK3568 quad-core Cortex-A55 up to 2.0GHz; or Allwinner A133 quad-core Cortex-A53 1.6GHz
NPURK3568 1 TOPS INT8 (AI tier); A133 no NPU (value tier)
GPURK3568 Mali-G52 2EE; A133 PowerVR GE8300
MemoryLPDDR4 2GB / 4GB / 8GB (RK3568); LPDDR4 1GB / 2GB (A133)
StorageeMMC 8GB / 16GB / 32GB / 64GB; TF card expansion; M.2 NVMe on the RK3568 carrier
DisplayDual display: LVDS / eDP / MIPI DSI / HDMI; 1920x1080 or 3840x2160; independent or mirrored; portrait or landscape per output
TouchCapacitive 10-point / 20-point; dual touch controllers on request; IR touch on request
Payment and peripheralsQR / NFC / face payment, barcode imager, thermal printer, cash drawer, weighing scale, RFID, fingerprint, ID card reader
CameraMIPI CSI 2-lane / 4-lane, ISP, 30 fps liveness capture
I/O4x USB 2.0, 2x USB 3.0, RS232 / RS485, up to 6 isolated COM, GPIO, relay, PWM, I2C, SPI, CAN bus
Network10/100M or dual Gigabit Ethernet, WiFi 5 / WiFi 6, Bluetooth 5.0, 4G LTE / 5G module, SIM slot
OSAndroid 11 / 12 / 13 / 14 / 15; Linux; Ubuntu; Debian; AOSP; GMS or GMS-free; kiosk mode
Power12V DC standard; wide-voltage 9-36V on request; hold-up capacitor on request
Thermal and reliabilityFanless 6-layer carrier; 0C to 50C standard, -20C to 70C wide temp; 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

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

The AS-RK3568-CVS-CUS is one carrier platform across eight different checkout counter deployments. The matrix below shows the most common OEM/ODM customization angles an R&D hardware lead in Europe walks through in the first scoping call.

ScenarioCatalog board limitAS-RK3568-CVS-CUS customization
Smart checkout counter all-in-oneThree BSPs for three counter sizesOne carrier, one BSP, three counter sizes
Dual-screen cashier counterMirrored output, 400 ms driftTwo framebuffers, sub-16 ms sync
Convenience store counterConsumer eMMC, no watchdogWear-leveled storage, 200 ms auto-restart
Restaurant and QSR counterSingle printer path, cloud-only queueRole-switchable printer, offline-first queue
Pharmacy and specialty counterLost last write on power cutPower-fail-safe audit log on FRAM
Fresh market weighing counterGeneric ADC, no certificationCertified load-cell front end, temp-compensated
Multi-platform A133 / RK3568 familyTwo 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 an R&D hardware lead in Frankfurt walks through when commissioning a custom smart checkout counter Android motherboard from AndroidSBC. No step is a placeholder.

  1. Day 0-3 — Requirements intake. A 90-minute call captures the till layout, the I/O map, the payment stack, the OS choice, the certification scope and the volume profile. Output: a one-page requirements sheet.
  2. Day 4-7 — Feasibility study. AndroidSBC engineers validate the SoC choice (RK3568 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 8-12 — Schematic and PCB layout. The AS-RK3568-CVS-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 13-18 — BSP porting. Android, Linux, Ubuntu or Debian BSP is ported to the customer's OS choice, with PREEMPT_RT patches and kiosk-mode locking where needed. Output: a BSP build for the customer's evaluation team.
  5. Day 19-23 — 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 24-28 — Customer evaluation. The customer's evaluation team runs thermal, EMC, payment-peripheral and field-replication tests. Output: an evaluation report with sign-off or change requests.
  7. Day 29-31 — 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.

Thirty-four days from kickoff to first article. Ninety days from kickoff to mass production. This is the OEM/ODM rhythm that the R&D hardware lead in Europe 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 smart checkout counter Android motherboard?
Answer: 120 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: 34 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 RK3568 or Allwinner A133 for a checkout counter?
Answer: RK3568 for AI-assisted tills, face payment, 4K output and multi-camera input; A133 for cost-driven entry tiers where a quad Cortex-A53 and 1080p dual display are sufficient. AndroidSBC builds both on the same enclosure cut-out so you can tier your own counter line.

Can one board drive both the operator screen and the customer screen?
Answer: Yes. Two independent framebuffers with per-panel resolution, refresh and orientation, independent LVDS and eDP clock domains, sub-16 ms frame sync, and optional dual touch controllers.

Do you support the payment stack we already use?
Answer: Yes — QR code, NFC, face-payment camera, barcode imager, fingerprint and ID card reader, plus EMVCo L2 and PCI PTS pre-scoping for card readers. Certification is done with your payment partner's module where required.

Can you integrate a weighing scale and certify it legal for trade?
Answer: Yes. A certified load-cell front end with temperature-compensated calibration, isolated RS232 and RS485 transceivers, and a documentation pack for the local weights and measures authority.

What certifications can you pre-scope for our market?
Answer: CE / FCC / RoHS standard. UL / UKCA / KC / PSE / SAA, GMS / Google EDLA, EMVCo L2 and PCI PTS are all pre-scoped on request. EMC pre-scanning is done in-house before third-party testing.

Do you support OEM/ODM and private label?
Answer: Yes. Custom logo, custom firmware, custom boot animation, custom UI, private-label PCBA and custom SDK modules are all standard OEM/ODM deliverables.

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 19-23 day window. Small-batch and large-volume pricing is available on request.