2 layers43 × 50 mm
Esp pmsa
neggles/esp-pmsa
Makefile uses Jan Mrázek's KiKit, which I cannot recommend enough, and therefore has to be available on your system.
28 parts1CC-BY-SA-4.0
2 layers38.4 × 65.5 mm
Sniffer
kylemanna/sniffer166ESP32 Air Quality Sensor with PMSA003 + BME680 and 1.14" LCD
- Size
- 38.4 × 65.5 mm
- Copper layers
- 2
- Thickness
- 1 mm
- Parts
- 22
- Nets
- 31
- Pads
- 80
- Tracks, vias
- 96, 9
- Pours
- 3
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 5 Sep 2020
- Updated
- 16 Jul 2026
Overview
Sniffer is an open-source printed circuit board by kylemanna, from the kylemanna/sniffer repository on GitHub. It is a 2-layer board of 38.4 × 65.5 mm with 22 parts on 31 nets, routed with 96 tracks and 9 vias.
It is built around the PMSA003-A and SI2371EDS. Its parts include 3 capacitors, 2 resistors, 2 transistors, 2 connectors and 1 IC. It belongs with the sensors and measurement and home automation and IoT boards and the ESP32 boards of this library.
Main components
2README
README.mdSniffer
Air quality sensor integration board that couples together the following modules:
- ESP32 TTGO T-Display module
- PMSA003 module
- BME680 CJMCU module
I use this to track the AQI in my home. This sensor measures within 1% of 3x different PurpleAir sensors scattered around my neighborhood. The PMSA003 particulate air sensor module in this build should be an improved version the PMS5003 found in the PurpleAir sensors.
Combined with Home Assistant, InfluxDB, and Grafana I can track the long term air quality inside and outside my home.
Details
Order PCBs
Want to build one?
Visit the shared project on PCBWay for direct ordering.
Early PCB Assembly
TODO
Hardware
-
Design Kicad schematic + PCB
-
Release Gerbers
-
Order PCBs from PCBWay (use my referral code "3549" to save $5)
-
Photograph real PCB + PCBA
-
Add pin labels to silk screen
-
Route out hole for TTGO T-Display battery connector so it fits flatter
-
Find someone to make a 3D printable enclosure
Software
- Upload ESPHome YAML file
Parts
22| Qty | Value | Footprint | References |
|---|---|---|---|
| 8 | SolderJumper_2_Bridged | Jumper:SolderJumper-2_P1.3mm_Bridged_RoundedPad1.0x1.5mm | JP1, JP2, JP3, JP4, JP5, JP6, JP7, JP8 |
| 4 | MountingHole | MountingHole:MountingHole_2.2mm_M2 | H1, H2, H3, H4 |
| 3 | 10u | Capacitor_SMD:C_1206_3216Metric_Pad1.42x1.75mm_HandSolder | C1, C2, C3 |
| 2 | 100k | Resistor_SMD:R_0805_2012Metric_Pad1.15x1.40mm_HandSolder | R1, R2 |
| 2 | Si2371EDS | Package_TO_SOT_SMD:SOT-23 | Q1, Q2 |
| 1 | Conn_01x06 | sniffer:CJMCU-680 | J1 |
| 1 | PMSA003 | sniffer:PMSA003 | J2 |
| 1 | TTGO-T-Display | sniffer:TTGO-T-DISPLAY-OL-2 | U1 |
Questions
How big is the Sniffer PCB?
It measures 38.4 × 65.5 mm and has 2 copper layers, 1 mm thick.
What parts does the Sniffer use?
22 parts, built around the PMSA003-A and SI2371EDS. 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 Sniffer KiCad files?
From the kylemanna/sniffer repository on GitHub, at the commit this page was made from: the board is kicad/sniffer.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the Sniffer design in my own project?
Its repository states no licence, so its author keeps all rights: ask kylemanna before reusing the design.
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