# ESP32 Temperature and Load Cell Sensor ## Description ESP32 sensor node with an I2C temperature sensor and load-cell ADC interface. ## Project Details - **Owner:** niranjan-j-rajesh - **Created:** 5/15/2026 - **Last Updated:** 5/16/2026 - **Visibility:** Public ## Key Components ### J1 — [691412320004](https://www.flux.ai/adrian95/691412320004~92m.md) - Datasheet URL: https://www.we-online.com/components/products/download/691412320004+%28rev1%29.pdf - Manufacturer Name: Wurth Elektronik - Manufacturer Part Number: 691412320004 - Connector Type: Terminal Blocks - License: https://creativecommons.org/licenses/by/4.0/ - Connector Rows: 1 - Connector Pitch: 3.81mm - Connector Positions: 4 - Part Type: Connector **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] ### U1 — [ESP32-DEVKIT-V1](https://www.flux.ai/jharwinbarrozo/esp32-devkit-v1~7xd.md) - Symbol Style: Parametric - Manufacturer Part Number: ESP32-DEVKIT-V1 - Part Type: Integrated Circuit - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32_datasheet_en.pdf - Manufacturer Name: Espressif Systems **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] - sensor_VN [pin 18] - sensor_VP [pin 17] - TX0 [pin 13] - TX2 [pin 7] - VIN [pin 30] ### U2 — [SHT31-DIS-B2.5KS](https://www.flux.ai/adrian95/sht31-dis-b2p5ks~6uh.md) - Part Type: Sensor - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Sensirion - Datasheet URL: https://sensirion.com/media/documents/213E6A3B/63A5A569/Datasheet_SHT3x_DIS.pdf - Manufacturer Part Number: SHT31-DIS-B2.5KS **Pins:** - ADDR [pin 2] - ALERT [pin 3] - EP [pin 9] - NRESET [pin 6] - R [pin 7] - SCL [pin 4] - SDA [pin 1] - VDD [pin 5] - VSS [pin 8] ### U3 — [HX711](https://www.flux.ai/kicad-part-library/hx711~na6.md) - Package or Case Code: SOP-16_3.9x9.9mm_P1.27mm - Manufacturer Part Number: HX711 - Datasheet URL: https://web.archive.org/web/20220615044707/https://akizukidenshi.com/download/ds/avia/hx711.pdf **Pins:** - AGND [pin 5] - AVDD [pin 3] - BASE [pin 2] - DOUT [pin 12] - DVDD [pin 16] - INA- [pin 7] - INA+ [pin 8] - INB- [pin 9] - INB+ [pin 10] - PD_SCK [pin 11] - RATE [pin 15] - VBG [pin 6] - VFB [pin 4] - VSUP [pin 1] - XI [pin 14] - XO [pin 13] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/niranjan-j-rajesh/esp32-temperature-and-load-cell-sensor~lq](https://www.flux.ai/niranjan-j-rajesh/esp32-temperature-and-load-cell-sensor~lq).* --- *Generated from [https://www.flux.ai/niranjan-j-rajesh/esp32-temperature-and-load-cell-sensor~lq](https://www.flux.ai/niranjan-j-rajesh/esp32-temperature-and-load-cell-sensor~lq)*