HOME-05 · Connected Home
Connected Coffee Machine Power and UI PCBA Set
An FCC-photo reference showing an SMC01 main board with three electromagnetic relays and power components, plus a separate LCD, key, buzzer, and connected-control interface board.
Project context
How this product is typically engineered
An FCC-photo reference showing an SMC01 main board with three electromagnetic relays and power components, plus a separate LCD, key, buzzer, and connected-control interface board.
System architecture
Typical architecture
A typical appliance architecture converts mains to control power, switches heater, pump, or grinder loads through dedicated outputs, reads water and temperature interlocks, and coordinates local display functions with optional network control.
Engineering risks to resolve
Decisions to close before release
- Prevent dry heating and over-temperature conditions independently of cloud or application software.
- Maintain insulation and EMC margins around heater, pump, motor, steam, and accessible controls.
- Coordinate sequential loads without supply sag, relay overstress, or unsafe recovery after power loss.
Validation plan
Checks to define before production
- Inject temperature-sensor, water-level, stuck-output, pump-stall, and dry-heat faults.
- Measure load inrush, relay life, thermal rise, mains variation, steam condensation, and long-duration keep-warm operation.
- Run applicable dielectric, surge, EFT, ESD, emissions, offline-control, and interrupted-update tests.
What to put in the RFQ
Files and records to agree before quoting
Use this list to agree the build inputs and release records for a similar product. The final set depends on the project.
Design baseline
Released schematic or block diagram, interface table, power states, critical constraints, and revision owner.
Manufacturing release
Gerber or ODB++, stack-up, centroid data, assembly drawings, approved DFM dispositions, and panel assumptions.
Material control
Released BOM revision, manufacturer part numbers, AVL or alternate rules, no-substitute lines, MSL handling, and exception approvals.
Validation record
Test method, acceptance criteria, sample or serial identity, measured result fields, and disposition. Example scope: Inject temperature-sensor, water-level, stuck-output, pump-stall, and dry-heat faults.
Production release
First-article status plus the agreed SPI, AOI, X-ray, ICT, FCT, programming, rework, OQA, labeling, and packing records.
During RFQ review, we confirm the required fields, sampling, limits, approvals, and record-retention period. Confidential project information stays within the agreed access rules.
Development and production controls
Typical manufacturing scope
- Multi-load appliance control.
- LCD, key, and buzzer integration.
- Thermal and water-path interlocks.
Technical image review
Board-level evidence
White-background views are published to make component placement, interfaces and assembly boundaries easier to inspect.
