4 layers100 × 91.4 mm
4 layers45 × 120 mm
Moisture
marmbrus/circuits- Size
- 45 × 120 mm
- Copper layers
- 4
- Thickness
- 1.6 mm
- Parts
- 13
- Nets
- 17
- Pads
- 43
- Tracks, vias
- 66, 11
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 9.0 (file 20241229)
- Created
- 25 Jul 2024
- Updated
- 6 Nov 2026
Overview
Moisture is an open-source printed circuit board by marmbrus, from the marmbrus/circuits repository on GitHub. It is a 4-layer board of 45 × 120 mm with 13 parts on 17 nets, routed with 66 tracks and 11 vias.
It is built around the FDC1004DGSR, TLV75733PDBV and BSS138. Its parts include 5 capacitors, 3 resistors, 2 ICs, 2 transistors and 1 connector.
Main components
3
FDC1004DGSR
MSOP-10-40℃~+125℃ 1kV 29uA 3V~3.6V 4 750uA Capacitive Touch MSOP-10 Touch Sensors ROHSTexas InstrumentsTouch Sensors
TLV75733PDBV
SOT-23-5-40℃~+125℃@(Tj) 1 1A 3.3V 40uA 46dB@(100kHz) 5.5V 650mV@(1A) 71.5uVrms Fixed Positive Under Voltage Lockout、Over Current Protection、Over Temperature Protection、Soft Start SOT-23-5 Voltage Regulators - Linear, Low Drop Out (LDO) Regulators ROHSTexas InstrumentsVoltage Regulators - Linear, Low Drop Out (LDO) Regulators
BSS138
SOT-23-55℃~+150℃ 1 N-channel 1.1Ω@10V、1.2Ω@4.5V 1.2V 1.7nC@10V 17.5pF 340mA 350mW 50V 6.5pF N-Channel SOT-23 MOSFETs ROHShongjiachengMOSFETs
README
readme.mdPlugins
Template Setup
Preferences -> Configure Paths...
- KICAD_USER_TEMPLATE_DIR=~/workspace/circuits/templates
Component Setup
easyeda2kicad
- github
easyeda2kicad --output ~/workspace/circuits/libraries/easyeda2kicad --full --lcsc_id=...
Schematics Editor -> Preferences -> Manage Symbol Libraries...
easyeda2kicad -> circuits/libraries/easyeda2kicad/easyeda2kicad.kicad_sym
PCB Editor -> Preferences -> Manage Footprint Libraries...
easyeda2kicad -> circuits/libraries/easyeda2kicad/easyeda2kicad.pretty
Parts
13| Qty | Value | Footprint | References |
|---|---|---|---|
| 3 | 10k | Resistor_SMD:R_0603_1608Metric | R11, R101, R201 |
| 3 | 1uF | Capacitor_SMD:C_0603_1608Metric | C102, C103, C104 |
| 2 | BSS138 | Package_TO_SOT_SMD:SOT-23 | Q3, Q4 |
| 1 | 100nF | Capacitor_SMD:C_0603_1608Metric | C105 |
| 1 | 10uF | Capacitor_SMD:C_0805_2012Metric | C101 |
| 1 | FDC1004DGSR | Package_SO:MSOP-10_3x3mm_P0.5mm | U101 |
| 1 | SM04B-SRSS-TB (LF)(SN) | easyeda2kicad:CONN-SMD_4P-P1.00_SM04B-SRSS-TB-LF-SN | CN2 |
| 1 | TLV75733PDBV | Package_TO_SOT_SMD:SOT-23-5 | U103 |
Questions
How big is the Moisture PCB?
It measures 45 × 120 mm and has 4 copper layers, 1.6 mm thick.
What parts does the Moisture use?
13 parts, built around the FDC1004DGSR, TLV75733PDBV and BSS138. 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 Moisture KiCad files?
From the marmbrus/circuits repository on GitHub, at the commit this page was made from: the board is moisture/moisture.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Moisture design in my own project?
Its repository states no licence, so its author keeps all rights: ask marmbrus before reusing the design.
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