# ESP32 Predictive Maintenance Sensor Node ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** hannahnabill310 - **Created:** 4/18/2026 - **Last Updated:** 4/18/2026 - **Visibility:** Public ## Key Components ### J1 — [PJ-037A](https://www.flux.ai/vasy_skral/pj-037a~6cq.md) - Manufacturer Name: CUI Devices - Part Type: Connector - Role Details: 9V DC barrel jack input feeding the buck converter - Manufacturer Part Number: PJ-037A - Package: Barrel Jack - Datasheet URL: https://www.cuidevices.com/product/resource/pj-037a.pdf - Role: Power Input **Pins:** - Center pin [pin 1] - Terminal [pin 2] ### LED1 — [SM0805HCL](https://www.flux.ai/adrian95/sm0805hcl~2dj.md) - Role Details: LED indicates presence of the 3.3V rail - License: https://creativecommons.org/licenses/by/4.0/ - Package: 0805 - Part Type: LED - Datasheet URL: https://www.bivar.com/parts_content/Datasheets/SM0805HCL.pdf - Manufacturer Part Number: SM0805HCL - Role: Power Indicator - Manufacturer Name: Bivar Inc. **Pins:** - A [pin 2] - K [pin 1] ### U1 — [ESP32-DEVKIT-V1](https://www.flux.ai/jharwinbarrozo/esp32-devkit-v1~7xd.md) - Manufacturer Name: Espressif Systems - Role Details: ESP32 DevKit C 30-pin style controller with CP2102 interface; provides VIN and 3.3V rails and hosts sensor/peripheral interfaces - Package: Dev Board - Symbol Style: Parametric - Role: Microcontroller - Manufacturer Part Number: ESP32-DEVKIT-V1 - Part Type: Integrated Circuit - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf **Pins:** - 3V3 [pin 1] - D12 [pin 27] - D13 [pin 28] - D14 [pin 26] - D15 [pin 3] - D18 [pin 9] - D19 [pin 10] - D2 [pin 4] - D21 [pin 11] - D22 [pin 14] - D23 [pin 15] - D25 [pin 23] - D26 [pin 24] - D27 [pin 25] - D32 [pin 21] - D33 [pin 22] - D34 [pin 19] - D35 [pin 20] - D4 [pin 5] - D5 [pin 8] - EN [pin 16] - GND [pin 2] - GND_1 [pin 29] - RX0 [pin 12] - RX2 [pin 6] - TX0 [pin 13] - TX2 [pin 7] - VIN [pin 30] - VN [pin 18] - VP [pin 17] ### U2 — [LM2596S-5.0/NOPB](https://www.flux.ai/adrian95/lm2596s-5p0nopb~ji8.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: LM2596S-5.0/NOPB - Role Details: Step-down converter generating 5V rail from 9V input - Part Type: Integrated Circuit - Role: Buck Regulator - Manufacturer Name: Texas Instruments - Package: TO-263-6 - Datasheet URL: https://www.ti.com/lit/ds/symlink/lm2596.pdf **Pins:** - ~ON~/OFF [pin 5] - FEEDBACK [pin 4] - GND_TAB [pin 6] - GROUND [pin 3] - OUTPUT [pin 2] - VIN [pin 1] ### U3 — [ADXL345](https://www.flux.ai/adrian95/adxl345~3ra.md) - Package: Breakout Module - Role: Accelerometer - Datasheet URL: https://cdn-learn.adafruit.com/downloads/pdf/adxl345-digital-accelerometer.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1231 - Part Type: Development Board - Manufacturer Name: Adafruit Industries LLC - Role Details: ADXL345 vibration sensor configured for I2C mode with address 0x53 **Pins:** - 1 [pin 1] - 10 [pin 10] - 11 [pin 11] - 12 [pin 12] - 13 [pin 13] - 14 [pin 14] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] - 7 [pin 7] - 8 [pin 8] - 9 [pin 9] ### U4 — [DS18B20+](https://www.flux.ai/adrian95/ds18b20plus~f15.md) - Manufacturer Name: Analog Devices Inc./Maxim Integrated - Role Details: DS18B20 one-wire digital temperature sensor powered from 3.3V - Package: TO-92-3 - Role: Temperature Sensor - Part Type: Sensor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: DS18B20+ - Datasheet URL: https://www.analog.com/media/en/technical-documentation/data-sheets/ds18b20.pdf **Pins:** - DQ [pin 2] - GND [pin 1] - VDD [pin 3] ### U5 — [4682](https://www.flux.ai/jecstronic/4682~7ep.md) - Manufacturer Part Number: 4682 - Part Type: Module - Manufacturer Name: Adafruit Industries LLC - Datasheet URL: https://cdn-learn.adafruit.com/downloads/pdf/adafruit-microsd-spi-sdio.pdf - Role Details: Micro SD card module connected over SPI for local data logging - Role: Storage - License: https://creativecommons.org/licenses/by/4.0/ - Package: Breakout Module **Pins:** - 3V [pin 1] - CLK [pin 3] - CMD/SI [pin 5] - D1 [pin 7] - D3/CS [pin 6] - DAT2 [pin 8] - DET [pin 9] - DO/SO [pin 4] - GND [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/hannahnabill310/esp32-predictive-maintenance-sensor-node~hg](https://www.flux.ai/hannahnabill310/esp32-predictive-maintenance-sensor-node~hg).* --- *Generated from [https://www.flux.ai/hannahnabill310/esp32-predictive-maintenance-sensor-node~hg](https://www.flux.ai/hannahnabill310/esp32-predictive-maintenance-sensor-node~hg)*