Engineering reference library · Smart home electronics
Thirteen reference architectures explain how connected-home products combine power, sensing, control, connectivity, safety, validation, and production release.
Filter by application or search by function. Each reference separates visible board features from a representative architecture and the risks and tests to consider for your design.
An FCC-photo reference showing a discrete offline power board with transformer, high-voltage capacitor, feedback isolation and heatsinking, plus a separate MCU and radio control board.
The photos confirm separate power and control boards but do not show the fan or particulate sensor; output voltages, fan topology, sensor buses, filtration performance, and insulation dimensions remain unconfirmed.
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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.
The photos confirm three relays and separate display/control hardware; their precise load mapping, power topology, insulation classification, sensor set, and wireless implementation require design documentation.
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An FCC-photo reference showing an integrated W60 main board with ACINPUT, L/N, 24V and heating-related markings, protected power sections, repeated output circuits, and a separate WBR1 wireless board.
The visible labels and WBR1 board support the stated functional partition; precise circuit topology, connector mapping, sensor population, protection independence, and electrical ratings require schematics and appliance testing.
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An FCC-photo reference showing a 12 V control board with mirrored left and right power channels, labeled pump, fan, solenoid and reed-switch connectors, plus a separate SOM and antenna assembly.
The board labels confirm 12 V dual-zone pump, fan, and solenoid interfaces; cooling or heating method, full sensor set, upstream supply classification, and achieved safety performance are not shown.
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An FCC-photo reference showing a large 16-zone controller with dense field-wiring terminals, repeated output stages, a backup-cell location, local controls, and extensive test pads.
The images confirm the 16-zone board form, terminal density, repeated circuits, and test access; supply rating, output switch technology, terminal functions, and diagnostic coverage remain to be confirmed.
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An FCC-photo reference showing a compact sensor node with a TI CC2652-marked wireless device, 48 MHz crystal, programming pads, a board-edge key, RF matching, and a printed antenna.
The images confirm the visible wireless device, crystal, antenna, and test pads, but the battery holder is not shown and the sensor IC, protocol revision, calibration method, and lifetime are not directly proven.
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An FCC-photo reference combining a wall-switch power and control assembly with visible antenna placement and a separate connected control-board example featuring an RJ45-form interface.
The photos support board partitioning, an HS200 antenna and relay-like component, and a Shelly control board with an RJ45-form connector; exact isolation, switching, metering, and load ratings are not proven.
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An FCC-photo reference showing an EMV3-A board with repeated current-transformer input channels, voltage-sensing components, isolation slots, dense test access, and an ESP32-WROVER-IE module with external antenna.
The photos confirm repeated analog channels, isolation features, test points, and the named ESP32 module; exact channel count and mapping, isolation topology, accuracy class, Ethernet function, and regulatory compliance are not proven.
Read full referenceAn FCC-photo reference showing a compact gateway mainboard with TYBT2 and TYWE3S radio modules, separate printed antennas, and accessible programming pads.
The photos confirm the named modules, antenna locations, and debug pads; the exact inter-module bus, supported ecosystem protocols, security implementation, and production firmware are not established by the images.
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An FCC-photo reference spanning the RLM1000 control board, user-interface board, wireless section, labeled safety and sensor connectors, and a large mainboard with repeated power channels.
The photographs confirm labeled interfaces and repeated power sections, but motor topology, boundary-sensing method, BMS design, safety performance, and connector pinout require schematics and system tests.
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An FCC-photo reference showing an H7149 fan or airflow sub-board and a main display board with dual-digit indication, humidity and wireless icons, and four spring-touch electrodes.
The photographs support a display-mainboard and fan-board partition, but they do not identify the radio IC, atomization method, water-level technology, connector mapping, or achieved dry-run protection.
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An FCC-photo reference showing a connector-rich low-voltage execution board and a separate Renesas-based application board with storage, board-to-board interfaces, and an ANT1 radio area.
The photographs show low-voltage boards but not the complete mains conversion, leakage protection, or high-power heating chain; full safety architecture and radio population must be confirmed at system level.
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An FCC-photo reference showing a connector-rich HERO mainboard, labeled motor, keypad, battery and DC-input interfaces, a concentrated power stage, and a CC2541-based radio daughterboard.
The images confirm the labeled interfaces, power section, and CC2541 radio module; exact sensors, motor drivers, charging configuration, auxiliary mechanisms, and anti-pinch performance are unverified.
Read full referenceCOFFEE-CTRL-A01
An autonomous STM32 controller handles the coffee cycle and sensor interlocks. A separate ESP32-C3 board provides OLED information, local keys and Wi-Fi configuration.
Application architecture matrix
Power level, loads, sensor accuracy, connectivity, environmental exposure, and safe-state behavior determine how each PCBA platform must be partitioned and verified.
Swipe horizontally to compare control loads, sensing, connectivity, and risk columns.
| Application family | Typical control load | Key sensing | Connectivity | Risk to close |
|---|---|---|---|---|
| Connectivity & control | Radio SoCs, protocol bridge, local storage | Power, link, device and reset states | Wi-Fi / BLE / local mesh | RF coexistence, availability, credentials, secure updates |
| Outdoor automation | Motors, valves, long field wiring | Lift, collision, position, flow, current | Wi-Fi / BLE reporting | Stall safety, surge, ingress, corrosion, offline control |
| Power & energy | Relays, mains conversion, CT analog front ends | Voltage, current, phase, contact state | Wi-Fi / Ethernet | Shock protection, accuracy, surge, thermal rise |
| Connected appliances | Heater, pump, motor, fan, local UI | Temperature, water, position, current | Wi-Fi / BLE | Dry-run, over-temperature, pinch, condensation |
| Water & wellness | Pumps, valves, fans, heating channels | Flow, temperature, leak, occupancy, pressure | Wi-Fi / BLE / SOM | Water-electric separation, leakage, safe thermal limits |
| Environmental appliances | Fan, humidification stage, isolated supply | Particles, humidity, water level, fan feedback | Wi-Fi / local UI | Condensation, dust, motor EMC, sensor drift |
| Sensing & monitoring | Battery wireless node | Temperature, humidity, battery state | 2.4 GHz gateway link | Battery life, self-heating, calibration, antenna loading |
Define the loads, sensors, fault responses, connectivity and environmental limits for your product. Use the reference to plan verification with the intended enclosure and target market requirements.
Confirm users, loads, sensors, connectivity, power, installation, environment, risks, and target markets.
Lock power and isolation domains, interfaces, protection, control states, diagnostics, and service strategy.
Use engineering samples, fixtures, calibrated loads, fault injection, lifecycle cycles, and environmental checks.
Complete DFM/DFT, approved BOM, programming and keys, calibration, test limits, work instructions, and revision control.
Specify the hardware, firmware, security, test and manufacturing deliverables required for the intended product behavior. Agree which engineering tasks are included before development starts.
Application understanding, architecture decomposition, risk identification, verification planning, and the engineering handoff needed for a custom smart home PCBA program.
Reference images and visible brands are used for technical analysis. They do not imply endorsement, affiliation, an existing customer project, verified certification, original schematics, or measured performance. Trademarks belong to their respective owners.
Share the product brief, load and sensor list, connectivity, installation environment, target market, expected volume, and any existing schematic, firmware, enclosure, or compliance files. We will identify the architecture and validation questions to close first.
Review more connected-device architectures, board views, validation risks, and production controls in our PCBA engineering reference library.
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