4 layers130 × 105 mm
HomeDeck
Kilan777/HomeDeck
Jarvis 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)
228 parts1
2 layers100 × 36.7 mm
Dash
object1037/dashEnvironment monitor (Temperature, Relative humidity, CO2) with e-paper display.
- Size
- 100 × 36.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 28
- Nets
- 36
- Pads
- 122
- Tracks, vias
- 189, 39
- Pours
- 44
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 29 Aug 2025
- Updated
- 6 Apr 2026
Overview
Dash is an open-source printed circuit board by object1037, from the object1037/dash repository on GitHub. It is a 2-layer board of 100 × 36.7 mm with 28 parts on 36 nets, routed with 189 tracks and 39 vias.
It is built around the SCD40-D-R2 and AO3400A. Its parts include 14 capacitors, 4 resistors, 3 diodes, 2 ICs and 2 inductors.
Main components
2
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
AO3400A
SOT-23-55℃~+150℃ 1 N-channel 1.45V 1.4W 30V 48mΩ@2.5V 5.7A 50pF 630pF 75pF 7nC@10V N-Channel SOT-23 MOSFETs ROHSAlpha & Omega SemiconductorMOSFETs
README
README.mdDash
Environment monitor (Temperature, Relative humidity, CO2) with e-paper display.
Inspired by pico-env-mon.
Parts
28| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | 1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C1, C2, C3, C4, C5, C6, C7, C8 |
| 3 | 10k | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R1, R3, R4 |
| 3 | D_Schottky | Diode_SMD:D_SMA | D1, D2, D3 |
| 2 | 0.1u | Capacitor_SMD:C_0603_1608Metric_Pad1.08x0.95mm_HandSolder | C13, C14 |
| 2 | 4.7u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C9, C11 |
| 2 | 47u | Capacitor_SMD:C_0805_2012Metric_Pad1.18x1.45mm_HandSolder | C10, C12 |
| 1 | 2.2 | Resistor_SMD:R_0603_1608Metric_Pad0.98x0.95mm_HandSolder | R2 |
| 1 | 47u | Inductor_SMD:L_10.4x10.4_H4.8 | L1 |
| 1 | AO3400A | Package_TO_SOT_SMD:SOT-23_Handsoldering | Q1 |
| 1 | Conn_Display | Connector_FFC-FPC:Jushuo_AFC07-S24FCA-00_1x24-1MP_P0.50_Horizontal | J1 |
| 1 | LOGO | LOGO | G*** |
| 1 | L_Ferrite | Inductor_SMD:L_0603_1608Metric_Pad1.05x0.95mm_HandSolder | L2 |
| 1 | M5Stamp-C3 | My_lib:M5Stamp_C3 | U1 |
| 1 | SCD40-D-R2 | Sensor:Sensirion_SCD4x-1EP_10.1x10.1mm_P1.25mm_EP4.8x4.8mm | U2 |
Questions
How big is the Dash PCB?
It measures 100 × 36.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Dash use?
28 parts, built around the SCD40-D-R2 and AO3400A. 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 Dash KiCad files?
From the object1037/dash repository on GitHub, at the commit this page was made from: the board is hardware/dash.kicad_pcb and its schematic hardware/dash.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Dash design in my own project?
Its repository states no licence, so its author keeps all rights: ask object1037 before reusing the design.
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