4 layers431.5 × 125.5 mm
Clavier
lsartory/Clavier
An FPGA-based mechanical keyboard with an integrated USB hub and communication interfaces
344 parts212
4 layers130 × 105 mm
HomeDeck
Kilan777/HomeDeck1Jarvis HomeDeck: a Raspberry Pi CM4 carrier board and voice-assistant software for a 7-inch smart display (KiCad hardware, generated from Python, plus the Python/JS assistant)
- Size
- 130 × 105 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 228
- Nets
- 161
- Pads
- 1,048
- Tracks, vias
- 5,581, 609
- Pours
- 11
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 30 Sep 2026
- Updated
- 14 Oct 2026
Overview
HomeDeck is an open-source printed circuit board by Kilan777, from the Kilan777/HomeDeck repository on GitHub. It is a 4-layer board of 130 × 105 mm with 228 parts on 161 nets, routed with 5,581 tracks and 609 vias.
It is built around the TPS5430DDAR, BME688 and CH224K, with the SCD40-D-R2, TPA3118D2DAPR and ICS-43434 among its other parts. Its parts include 96 capacitors, 47 resistors, 19 ICs, 18 diodes and 17 connectors. It belongs with the computers and single-board computers and lEDs and displays boards and the Raspberry Pi (Linux) boards of this library.
Main components
12
TPS5430DDAR
SOIC-8-EP-40℃~+125℃@(TJ) 1 1.221V~32.04V 3A 4.4mA 5.5V~36V 500kHz Adjustable Buck Buck Built-in No SOIC-8-EP DC-DC Converters ROHSTexas InstrumentsDC-DC Converters
BME688
SMD-8P-40℃~+85℃ 0%RH~100%RH 1.71V~3.6V 2.1uA I2C、SPI ±0.5℃ ±3%RH SMD-8P Temperature and Humidity Sensor ROHSBosch SensortecTemperature And Humidity Sensor
CH224K
ESSOP-10-150mil-1mm-40℃~+90℃ 100W 4V~30V 5V、9V、12V、15V、20V Overvoltage Protection、Thermal Protection PD 3.0 Power Receiver Controller ESSOP-10-150mil-1mm USB PD ROHSWCH (Nanjing Qinheng Microelectronics)USB Converters
SCD40-D-R2
LGA-20(10.1x10.1)-10℃~+60℃ 10.1mm 10.1mm 15mA 2.4V~5.5V 400ppm~2000ppm 6.5mm Air quality I2C Reset function ±5% LGA-20(10.1x10.1) Gas Sensors ROHSSensirionGas Sensors
TPA3118D2DAPR
HTSSOP-32-EP-6.1mm-40℃~+85℃ -70dB 0.1% 102dB 2-Channel 30Wx2@8Ω 4.5V~26V 50mA 90% Class D Enable/shutdown function、Filterless architecture、ESD protection、Overvoltage protection、Analog voltage gain、Integrated PLL HTSSOP-32-EP-6.1mm Audio Amplifiers ROHSTexas InstrumentsAudio Amplifiers
ICS-43434
LGA-6(3.5x2.7)-26dB -40℃~+85℃ 0.98mm 1.65V~3.63V 2.65mm 3.5mm 550uA 64dB I2S Omnidirectional Omnidirectional pickup LGA-6(3.5x2.7) MEMS Microphones ROHSTDK InvenSenseMEMS Microphones
SY6280AAC
SOT-23-5-40℃~+125℃ 1 2.4V~5.5V 80mΩ Active High High Side Switch Overcurrent Protection(OCP)、Over Temperature Protection SOT-23-5 Power Distribution Switches ROHS矽力杰silergyPower Distribution Switches
TS3USB221RSER-TP
QFN-10L(1.5x2)-40℃~+85℃ 13uA 2.5V~5.5V 2/4 200ps@3.3V,0pF Power-off protection、Break-before-make function、Overcurrent Protection Single Supply QFN-10L(1.5x2) Signal Switches, Multiplexers, Decoders ROHSTECH PUBLICSignal Switches, Multiplexers, Decoders
USBLC6-2SC6
SOT-23-60.35pF、0.8pF 100nA 150W@8/20us 15V 2 5V 6A@8/20us 6V ESD SOT-23-6 ESD and Surge Protection (TVS/ESD) ROHSUMWESD And Surge Protection (TVS/ESD)SN74AHCT1G125DBVR(UMW)
SOT-23-5-40℃~+125℃ 1 1 10uA 12ns@5V,50pF 2V 3.8V、4.4V 4.5V~5.5V 440mV 74AHCT 800mV 8mA 8mA SOT-23-5 Logic Gates ROHSUMWLogic Gates
AMS1117-3.3
SOT-223-40℃~+125℃ 0.003%Vout 1 1.1V@(800mA) 15V 1A 3.3V 5mA 72dB@(120Hz) Fixed Over Current Protection、Short Circuit Protection、Thermal shutdown Positive SOT-223 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSAdvanced Monolithic SystemsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
CH334R
QSOP-16-150mil-40℃~+85℃ 0.4mA 3.3V、5V 4 480Mbps 85mA Hub I2C USB 2.0 QSOP-16-150mil USB HUB Controllers ROHSWCH (Nanjing Qinheng Microelectronics)USB HUB Controllers
README
README.mdJarvis HomeDeck
Public mirror. This is a snapshot of the private working repo (commit
f1d429f). Some private parts of the software are not included.
A self-built voice assistant with a screen: a Raspberry Pi Compute Module 4 carrier PCB that bolts to the 7-inch Raspberry Pi Touch Display 2, plus the software that turns it into "Jarvis". Personal project by Kilan.
The board carries the CM4, USB-C PD power, three 5 V bucks, a stereo class-D amplifier, two MEMS microphones, a Camera Module 3 connector, CO2 / temperature / humidity / pressure / VOC sensors, an RGB LED bar and an external WS2812B strip header, a fan header, buttons, a Qwiic-style I2C header, microSD, USB-A and a second USB-C.
The software is a single Python service with a module per feature and a touch UI in Chromium, plus a phone app served on a personal domain behind Google sign-in. Voice runs on a local wake word and hosted speech models; everything that is a command (timers, lights, music, volume, math) is handled on the device without a model.
| Folder | Contents |
|---|---|
kicad/ | KiCad project: hierarchical schematic (9 sheets), 4-layer routed PCB, project symbols and footprints, DRC rules |
tools/circuit.py | The single source the schematic, netlist and BOM are generated from. Edit this, not the KiCad files |
out/ | Gerbers, JLCPCB BOM and pick-and-place, schematic PDF, board renders, DRC report (rev A as ordered) |
docs/ | Hardware docs: README.md (board overview), ARCHITECTURE.md, BRINGUP.md, ORIENTATION.md, and PCB_ISSUES.md (what went wrong on rev A and what rev B should change) |
software/homedeck/ | The assistant: server.py, modules/, web/, install/. See docs/SOFTWARE.md |
software/homedeck_ui.py | The original bench dashboard used for bring-up (retired) |
Status
- Rev A board #1 is fully working and in daily use, running at 9 V PD after two solder-jumper changes.
Rev A board #2 is assembled and untested. Findings and the rev B list are in
docs/PCB_ISSUES.md. - Software is feature complete for daily use: home screen, Jarvis voice, Spotify (full client), YouTube (ad-free
native player), air quality with history, timers, alarms, reminders, lists, calendar, countdowns, bikes, transit,
flights radar, lights, fan, sleep sounds, guest card with Wi-Fi QR,
presence, Wi-Fi setup, on-screen keyboard. See
docs/SOFTWARE.md.
Quick start
Hardware: order from out/ (JLCPCB 4-layer, two-sided assembly), read docs/BRINGUP.md, then apply the rev A
fixes in docs/PCB_ISSUES.md before first power-on (the 9 V jumper setting matters).
Software, on the Pi:
rsync -a software/homedeck/ kilan@homedeck.local:~/hd/
ssh kilan@homedeck.local 'cd ~/hd && bash install.sh'Then open Settings on the device for location, Wi-Fi, Spotify, calendar feeds and the API keys the optional
features need (Groq for voice, 511.org for Muni). Secrets live only on the device in /var/lib/homedeck/config.json
and are never in this repository.
Privacy
This repository is private. It contains no credentials, tokens or Wi-Fi passwords. The device redacts secrets from every API response, the phone app requires Google sign-in, and there is no VPN or third-party relay involved.
Parts
228| Qty | Value | Footprint | References |
|---|---|---|---|
| 37 | 100nF | Capacitor_SMD:C_0603_1608Metric | C10, C12, C16, C18, C22, C25, C26, C29, C30, C31, C34, C35, C43, C45, C47, C48 +21 |
| 13 | 10uF | Capacitor_SMD:C_0603_1608Metric | C27, C28, C33, C38, C39, C40, C41, C42, C44, C46, C49, C77, C92 |
| 12 | 10k | Resistor_SMD:R_0603_1608Metric | R3, R11, R17, R22, R23, R25, R35, R36, R37, R42, R43, R44 |
| 10 | WS2812B | LED_SMD:LED_WS2812B_PLCC4_5.0x5.0mm_P3.2mm | D10, D11, D12, D13, D14, D15, D16, D17, D18, D19 |
| 8 | 1uF | Capacitor_SMD:C_0603_1608Metric | C4, C32, C54, C55, C57, C58, C59, C60 |
| 7 | 10uF/50V | Capacitor_SMD:C_1206_3216Metric | C1, C2, C5, C11, C17, C67, C69 |
| 5 | 100uF/35V | Capacitor_SMD:CP_Elec_6.3x7.7 | C3, C8, C14, C20, C70 |
| 5 | 22uF/25V | Capacitor_SMD:C_1206_3216Metric | C9, C15, C21, C23, C24 |
| 5 | 4.7k | Resistor_SMD:R_0603_1608Metric | R6, R8, R10, R38, R39 |
| 4 | 10uH 2.1A | Inductor_SMD:L_Sunlord_SWPA5040S | L4, L5, L6, L7 |
| 4 | 1uF/50V | Capacitor_SMD:C_0805_2012Metric | C71, C72, C73, C74 |
| 4 | 220nF | Capacitor_SMD:C_0603_1608Metric | C62, C63, C64, C65 |
| 4 | 22k | Resistor_SMD:R_0603_1608Metric | R18, R19, R27, R30 |
| 4 | 470R | Resistor_SMD:R_0603_1608Metric | R4, R26, R29, R41 |
| 4 | M2.5 display standoff | MountingHole:MountingHole_2.7mm_M2.5 | H1, H2, H3, H4 |
| 4 | SS34 | Diode_SMD:D_SMA | D6, D7, D8, D9 |
| 3 | 100k | Resistor_SMD:R_0603_1608Metric | R14, R33, R46 |
| 3 | 10nF | Capacitor_SMD:C_0603_1608Metric | C7, C13, C19 |
| 3 | 10uH 7.8A | Inductor_SMD:L_Sunlord_MWSA1004S | L1, L2, L3 |
| 3 | 15k | Resistor_SMD:R_0603_1608Metric | R5, R7, R9 |
| 3 | 2.2uF | Capacitor_SMD:C_0603_1608Metric | C50, C51, C52 |
| 3 | PD volt sel | Jumper:SolderJumper-3_P1.3mm_Bridged12_RoundedPad1.0x1.5mm | JP1, JP2, JP3 |
| 3 | TPS5430 | Package_SO:TI_SO-PowerPAD-8_ThermalVias | U2, U3, U4 |
| 3 | ext button | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J18, J19, J20 |
| 2 | 10R | Resistor_SMD:R_0603_1608Metric | R24, R34 |
| 2 | 1nF | Capacitor_SMD:C_0603_1608Metric | C66, C68 |
| 2 | 2.2nF | Capacitor_SMD:C_0603_1608Metric | C53, C56 |
| 2 | 22pF | Capacitor_SMD:C_0603_1608Metric | C36, C37 |
| 2 | 330R | Resistor_SMD:R_0603_1608Metric | R13, R40 |
| 2 | 5.1k | Resistor_SMD:R_0603_1608Metric | R1, R21 |
| 2 | 6.8k | Resistor_SMD:R_0603_1608Metric | R28, R31 |
| 2 | AO3401A | Package_TO_SOT_SMD:SOT-23 | Q1, Q4 |
| 2 | ICS-43434 | Sensor_Audio:InvenSense_ICS-43434-6_3.5x2.65mm | U15, U16 |
| 2 | SY6280AAC | Package_TO_SOT_SMD:SOT-23-5 | U10, U12 |
| 2 | TS3USB221 | Package_DFN_QFN:Texas_UQFN-10_1.5x2mm_P0.5mm | U6, U7 |
| 2 | USB int | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J4, J5 |
| 2 | USBLC6-2SC6 | Package_TO_SOT_SMD:SOT-23-6 | U9, U11 |
| 1 | 0R | Resistor_SMD:R_0603_1608Metric | R12 |
| 1 | 100R | Resistor_SMD:R_0603_1608Metric | R45 |
| 1 | 100uF/35V | CP_Elec_6.3x7.7 | C96 |
| 1 | 10k | R_0603_1608Metric | R47 |
| 1 | 12MHz | Crystal:Crystal_SMD_3225-4Pin_3.2x2.5mm | Y1 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R15 |
| 1 | 1k/0.25W | Resistor_SMD:R_1206_3216Metric | R2 |
| 1 | 20k | Resistor_SMD:R_0603_1608Metric | R32 |
| 1 | 220R | Resistor_SMD:R_0603_1608Metric | R16 |
| 1 | 2N7002 | SOT-23 | Q5 |
| 1 | 2N7002 | Package_TO_SOT_SMD:SOT-23 | Q2 |
| 1 | 3.9k | Resistor_SMD:R_0603_1608Metric | R20 |
| 1 | 5A | Fuse:Fuse_1206_3216Metric | F1 |
| 1 | 74AHCT1G125 | Package_TO_SOT_SMD:SOT-23-5 | U19 |
| 1 | ACT (green) | LED_SMD:LED_0805_2012Metric | D3 |
| 1 | AMS1117-3.3 | Package_TO_SOT_SMD:SOT-223-3_TabPin2 | U5 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23 | Q3 |
| 1 | BME688 | Package_LGA:Bosch_LGA-8_3x3mm_P0.8mm_ClockwisePinNumbering | U18 |
| 1 | BTN A | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW2 |
| 1 | BTN B | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW3 |
| 1 | CAMERA (CAM1) | FPC_15P_1.0mm_BottomContact_RA | J7 |
| 1 | CH224K | HomeDeck:ESSOP-10-1EP_3.9x4.9mm_P1.0mm | U1 |
| 1 | CH334R | Package_SO:QSOP-16_3.9x4.9mm_P0.635mm | U8 |
| 1 | DISPLAY (DSI1) | FPC_15P_1.0mm_BottomContact_RA | J6 |
| 1 | DISPLAY 5V | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J8 |
| 1 | Expansion | Connector_PinHeader_2.54mm:PinHeader_2x08_P2.54mm_Vertical | J16 |
| 1 | FAN 5V | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J21 |
| 1 | GLOBAL_EN | Connector_PinHeader_2.54mm:PinHeader_1x02_P2.54mm_Vertical | J13 |
| 1 | I2C ext (light sensor) | Connector_PinHeader_2.54mm:PinHeader_1x04_P2.54mm_Vertical | J12 |
| 1 | LED strip ext | Connector_JST:JST_PH_S3B-PH-K_1x03_P2.00mm_Horizontal | J17 |
| 1 | PCM5102A | Package_SO:TSSOP-20_4.4x6.5mm_P0.65mm | U13 |
| 1 | PD OK (green) | LED_SMD:LED_0805_2012Metric | D2 |
| 1 | POWER | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW1 |
| 1 | PWR (red) | LED_SMD:LED_0603_1608Metric | D4 |
| 1 | RESET | Button_Switch_SMD:SW_Push_1P1T_XKB_TS-1187A | SW4 |
| 1 | Raspberry Pi CM4 | HomeDeck:RPi_CM4 | M1 |
| 1 | SCD40 | Sensor:Sensirion_SCD4x-1EP_10.1x10.1mm_P1.25mm_EP4.8x4.8mm | U17 |
| 1 | SMBJ24A | Diode_SMD:D_SMB | D1 |
| 1 | SPK L | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J10 |
| 1 | SPK R | Connector_JST:JST_PH_S2B-PH-K_1x02_P2.00mm_Horizontal | J11 |
| 1 | TPA3118D2 | Package_SO:HTSSOP-32-1EP_6.1x11mm_P0.65mm_EP5.2x11mm_Mask4.11x4.36mm_ThermalVias | U14 |
| 1 | UART debug | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J15 |
| 1 | USB-A | Connector_USB:USB_A_Molex_67643_Horizontal | J3 |
The 223 most common of 228 parts.
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Questions
How big is the HomeDeck PCB?
It measures 130 × 105 mm and has 4 copper layers, 1.6 mm thick.
What parts does the HomeDeck use?
228 parts, built around the TPS5430DDAR, BME688, CH224K and SCD40-D-R2. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the HomeDeck KiCad files?
From the Kilan777/HomeDeck repository on GitHub, at the commit this page was made from: the board is kicad/HomeDeck.kicad_pcb and its schematic kicad/HomeDeck.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the HomeDeck design in my own project?
Its repository states no licence, so its author keeps all rights: ask Kilan777 before reusing the design.