# SDP810Ventilation OBD c719 ## Description This project develops an ESP32-based differential pressure measurement module using the Sensirion SDP810-500Pa sensor for ventilation diagnostics (Ventilation OBD system). The device measures airflow pressure differences across filters, ducts, and fans to evaluate system performance and detect blockages or imbalances. ## Project Details - **Owner:** ventmeister - **Created:** 10/4/2025 - **Last Updated:** 10/4/2025 - **Visibility:** Public ## Key Components ### J1 — [B2B-PH-K-S(LF)(SN)](https://www.flux.ai/jecstronic/b2b-ph-k-slfsn.md) - Manufacturer Name: JST Sales America - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811151524_JST-Sales-America-B2B-PH-K-S-LF-SN_C131337.pdf - Part Type: Connector - Manufacturer Part Number: B2B-PH-K-S(LF)(SN) **Pins:** - PIN1 [pin 1] - PIN2 [pin 2] ### J2 — [10137064-00021LF](https://www.flux.ai/adrian95/10137064-00021lf.md) - Manufacturer Part Number: 10137064-00021LF - Datasheet URL: https://cdn.amphenol-cs.com/media/wysiwyg/files/documentation/datasheet/inputoutput/io_usb31typec_g1_connector.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Amphenol ICC (FCI) - Part Type: Connector - Package or Case Code: AMPHENOL_10137064-00021LF **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND_A [pin A1] - GND_A__1 [pin A12] - GND_B [pin B1] - GND_B__1 [pin B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin SH1] - SHIELD__1 [pin SH2] - SHIELD__2 [pin SH3_1] - SHIELD__3 [pin SH3_2] - SHIELD__4 [pin SH4_1] - SHIELD__5 [pin SH4_2] - SSRXN1 [pin B10] - SSRXN2 [pin A10] - SSRXP1 [pin B11] - SSRXP2 [pin A11] - SSTXN1 [pin A3] - SSTXN2 [pin B3] - SSTXP1 [pin A2] - SSTXP2 [pin B2] - VBUS_A [pin A4] - VBUS_A__1 [pin A9] - VBUS_B [pin B4] - VBUS_B__1 [pin B9] ### J3 — [Pin Header 01x05 2.54mm Vertical](https://www.flux.ai/adrian95/pin-header-01x05-254mm-vertical.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] ### LED1 — [SML-D13FWT86C](https://www.flux.ai/jecstronic/sml-d13fwt86c.md) - Manufacturer Name: Rohm Semiconductor - Datasheet URL: https://fscdn.rohm.com/en/products/databook/datasheet/opto/led/chip_mono/sml-d13fwt86(c)-e.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED - Manufacturer Part Number: SML-D13FWT86C **Pins:** - A [pin 2] - K [pin 1] ### S1 — [COM-08184](https://www.flux.ai/adrian95/com-08184.md) - Package or Case Code: COM08184 - License: https://creativecommons.org/licenses/by/4.0/ - Voltage Rating: 5V - Part Type: Switch - Manufacturer Name: SparkFun - Manufacturer Part Number: COM-08184 - Datasheet URL: https://cdn.sparkfun.com/datasheets/Components/Switches/LEVER8184.pdf **Pins:** - 1 [pin 1] - 2 [pin 2] - MP1 [pin MP1] - MP2 [pin MP2] - T1 [pin T1] ### U1 — [CR2013-MI2120](https://www.flux.ai/kicad-part-library/cr2013-mi2120.md) - Package or Case Code: CR2013-MI2120 - Part Type: Display - Datasheet URL: http://pan.baidu.com/s/11Y990 - Manufacturer Part Number: CR2013-MI2120 **Pins:** - ~{CS} [pin 3] - D/~{C} [pin 5] - FLASH_CD [pin 14] - GND [pin 2] - LED [pin 8] - MISO [pin 9] - MOSI [pin 6] - RESET [pin 4] - SCK [pin 7] - SD_CS [pin 10] - SD_MISO [pin 12] - SD_MOSI [pin 11] - SD_SCK [pin 13] - VCC [pin 1] ### U2 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d.md) - Part Type: Microcontroller - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32D **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - IO0 [pin 25] - IO12 [pin 14] - IO13 [pin 16] - IO14 [pin 13] - IO15 [pin 23] - IO16 [pin 27] - IO17 [pin 28] - IO18 [pin 30] - IO19 [pin 31] - IO2 [pin 24] - IO21 [pin 33] - IO22 [pin 36] - IO23 [pin 37] - IO25 [pin 10] - IO26 [pin 11] - IO27 [pin 12] - IO32 [pin 8] - IO33 [pin 9] - IO34 [pin 6] - IO35 [pin 7] - IO4 [pin 26] - IO5 [pin 29] - NC [pin 32] - RXD0 [pin 34] - SD0 [pin 21] - SD1 [pin 22] - SD2 [pin 17] - SD3 [pin 18] - TXD0 [pin 35] - VN [pin 5] - VP [pin 4] ### U3 — [SDP810-500PA-D](https://www.flux.ai/lcsc/sdp810-500pa-d.md) - Manufacturer Name: Sensirion(瑞士盛思锐) - Part Type: Pressure Sensors - LCSC Part Number: C153056 - Manufacturer Part Number: SDP810-500PA-D - Datasheet URL: https://assets.lcsc.com/datasheet/szlcsc/Download-ISO9001-Certification.pdf - Product Info Url: https://lcsc.com/product-detail/Sensors_Sensirion_SDP810-500PA_SDP810-500PA_C153056.html - Package or Case Code: SENSOR-TH_SDP810-500PA - JLCPCB Part Class: Extended Part **Pins:** - 0 [pin 0] - GND [pin 3] - SCL [pin 1] - SDA [pin 4] - VDD [pin 2] ### U4 — [TP4056](https://www.flux.ai/jecstronic/tp4056.md) - Manufacturer Part Number: TP4056 - Datasheet URL: https://datasheet.lcsc.com/lcsc/1912111437_TPOWER-TP4056_C382139.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Top Power ASIC - Part Type: Integrated Circuit **Pins:** - ~CHRG [pin 7] - ~DONE [pin 6] - BAT [pin 5] - CE [pin 8] - EP [pin 9] - GND [pin 3] - PROG [pin 2] - TEMP [pin 1] - VCC [pin 4] ### U5 — [LM3671MF-3.3/NOPB](https://www.flux.ai/adrian95/lm3671mf-33nopb.md) - Manufacturer Name: Texas Instruments - Part Type: Integrated Circuit - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM3671MF-3.3/NOPB - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=https%3A%2F%2Fwww.ti.com%2Flit%2Fgpn%2Flm3671 **Pins:** - EN [pin 3] - FB [pin 4] - GND [pin 2] - SW [pin 5] - VIN [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/ventmeister/sdp810ventilation-obd-c719](https://www.flux.ai/ventmeister/sdp810ventilation-obd-c719).* --- *Generated from [https://www.flux.ai/ventmeister/sdp810ventilation-obd-c719](https://www.flux.ai/ventmeister/sdp810ventilation-obd-c719)*