# ESP32 Bluetooth Multimeter ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** jjteds8 - **Created:** 3/29/2025 - **Last Updated:** 3/30/2025 - **Visibility:** Public ## Key Components ### D1 — [WE-TVS-82400102](https://www.flux.ai/vasy_skral/we-tvs-82400102.md) - Part Type: Protection - Manufacturer Name: Würth Elektronik - License: https://creativecommons.org/licenses/by/4.0/ - Usage: Input protection for voltage measurement - Datasheet URL: https://katalog.we-online.de/pbs/datasheet/82400102.pdf - Manufacturer Part Number: 82400102 **Pins:** - GND [pin 2] - IO1 [pin 6] - IO1 [pin 1] - IO2 [pin 3] - IO2 [pin 4] - VDD [pin 5] ### U1 — [OPA2333xxDRB](https://www.flux.ai/kicad-part-library/opa2333xxdrb.md) - Package or Case Code: Texas_S-PVSON-N8 - Function: Buffer for voltage divider - Datasheet URL: http://www.ti.com/lit/ds/symlink/opa333.pdf - Manufacturer Part Number: OPA2333xxDRB - Manufacturer Name: Texas Instruments Inc. **Pins:** - - [pin 6] - - [pin 2] - + [pin 5] - + [pin 3] - ~ [pin 7] - ~ [pin 1] - PAD [pin 9] - V- [pin 4] - V+ [pin 8] ### U2 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d.md) - Part Type: Microcontroller - Interface: Microcontroller for system control - Manufacturer Part Number: ESP32-WROOM-32D - Manufacturer Name: Espressif Systems - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 15] - GND [pin 1] - GND [pin 38] - 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 — [ADS1110A7IDBVT](https://www.flux.ai/vasy_skral/ads1110a7idbvt.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/ads1110.pdf - Manufacturer Name: Texas Instruments - Manufacturer Part Number: ADS1110A7IDBVT - Interface: I2C - Part Type: Integrated Circuit **Pins:** - GND [pin 2] - SCL [pin 3] - SDA [pin 4] - VDD [pin 5] - VIN- [pin 6] - VIN+ [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/jjteds8/esp32-bluetooth-multimeter](https://www.flux.ai/jjteds8/esp32-bluetooth-multimeter).* --- *Generated from [https://www.flux.ai/jjteds8/esp32-bluetooth-multimeter](https://www.flux.ai/jjteds8/esp32-bluetooth-multimeter)*