Connecting ADS-1115 to ESP32

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Design a schematic for a wearable pressure sensing unit with the following components and connections: Power Supply JST-PH 2-pin connector (J1) for 3.7V LiPo battery input TP4056 USB-C LiPo charger module: BAT+ and BAT- connect to J1, OUT+ and OUT- provide regulated output SPDT slide switch (SW1) between TP4056 OUT+ and the 3.3V power rail (VCC) TP4056 OUT- connects to GND rail Add 10µF decoupling capacitor between VCC and GND Microcontroller ESP32-S3-Mini module (U1) VCC (3.3V) to pin 3V3 GND to pin GND GPIO8 is SDA (I2C data bus) GPIO9 is SCL (I2C clock bus) USB-C connector directly on the ESP32 module for programming and serial debug 0.1µF bypass capacitor between 3V3 and GND, placed close to the module ADC #1 ADS1115 16-bit I2C ADC (U2), I2C address 0x48 VDD to VCC (3.3V) GND to GND SCL to I2C SCL bus (ESP32 GPIO9) SDA to I2C SDA bus (ESP32 GPIO8) ADDR pin to GND (sets address 0x48) ALRT pin: no connect 0.1µF bypass capacitor between VDD and GND close to U2 Inputs A0, A1, A2, A3 each connect to a voltage divider junction (see below) ADC #2 ADS1115 16-bit I2C ADC (U3), I2C address 0x49 VDD to VCC (3.3V) GND to GND SCL to I2C SCL bus (ESP32 GPIO9) SDA to I2C SDA bus (ESP32 GPIO8) ADDR pin to VCC (sets address 0x49) ALRT pin: no connect 0.1µF bypass capacitor between VDD and GND close to U3 Inputs A0, A1, A2, A3 each connect to a voltage divider junction (see below) I2C Bus 4.7kΩ pull-up resistor from SDA bus to VCC (R_PU1) 4.7kΩ pull-up resistor from SCL bus to VCC (R_PU2) Bus connects: ESP32 GPIO8 — ADS1115 #1 SDA — ADS1115 #2 SDA Bus connects: ESP32 GPIO9 — ADS1115 #1 SCL — ADS1115 #2 SCL FSR Voltage Dividers (8 identical circuits) Each FSR channel has this circuit: 2-pin connector (J_FSRn) for the force sensitive resistor FSR pin 1 connects to VCC (3.3V) FSR pin 2 connects to the voltage divider junction node 1kΩ resistor (R_n) from the junction node to GND Junction node connects to the corresponding ADS1115 analog input Channel assignments: J_FSR1 junction → U2 (ADS#1) A0 — Zone Z1 medial heel J_FSR2 junction → U2 (ADS#1) A1 — Zone Z2 lateral heel J_FSR3 junction → U2 (ADS#1) A2 — Zone Z3 medial arch J_FSR4 junction → U2 (ADS#1) A3 — Zone Z4 lateral midfoot J_FSR5 junction → U3 (ADS#2) A0 — Zone Z5 1st metatarsal J_FSR6 junction → U3 (ADS#2) A1 — Zone Z6 3rd metatarsal J_FSR7 junction → U3 (ADS#2) A2 — Zone Z7 5th metatarsal J_FSR8 junction → U3 (ADS#2) A3 — Zone Z8 hallux Resistor values: R1 through R8 are all 1kΩ (1000 ohm) FSR Connector 10-pin female header (J2) that bundles all FSR connections: Pins 1-8: FSR signal lines (junction nodes for Z1-Z8) Pin 9: VCC (3.3V supply to FSR array) Pin 10: GND Status LED LED (D1) with 330Ω series resistor from ESP32 GPIO2 to GND for BLE connection status indicator Board Specifications 2-layer PCB, 50mm x 70mm All SMD components where possible except connectors and module headers USB-C port accessible from board edge Slide switch accessible from board edge JST battery connector accessible from board edge 10-pin FSR header along one edge for cable exit Mounting holes at corners (M2)
22 days

flux

1:37

Considering project design options.

Checking if I can make the changes for you.

Searching for components.

Searching library for: "Find an ESP32-S3-MINI module suitable for a wearable pressure sensing PCB design. Prefer an Espressif ESP32-S3-MINI module or close equivalent with integrated USB support on the module family, suitable for 3.3V operation and compact embedded designs."

Searching library for: "Find an ADS1115 16-bit I2C ADC for a 3.3V ESP32-based sensor board. Need the standard ADS1115 family device, suitable for using two devices on one I2C bus with selectable addresses."

Searching library for: "Find a TP4056 lithium-ion battery charger IC or module entry suitable for a single-cell 3.7V LiPo charger design with USB input."

Creating search plan for: "Find an ESP32-S3-MINI module suitable for a wearable pressure sensing PCB design. Prefer an Espressif ESP32-S3-MINI module or close equivalent with integrated USB support on the module family, suitable for 3.3V operation and compact embedded designs. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Creating search plan for: "Find an ADS1115 16-bit I2C ADC for a 3.3V ESP32-based sensor board. Need the standard ADS1115 family device, suitable for using two devices on one I2C bus with selectable addresses. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Creating search plan for: "Find a TP4056 lithium-ion battery charger IC or module entry suitable for a single-cell 3.7V LiPo charger design with USB input. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Searching: "Single-cell Li-ion charger IC or module for 3.7V LiPo with USB input (TP4056 family, micro-USB module or SOT-23-5 IC), ~1A charge, common module variants and protection-board modules"

Found 10 results.

Searching: "Find a TP4056 lithium-ion battery charger IC or module entry suitable for a single-cell 3.7V LiPo charger design with USB input. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Searching: "Compact ESP32-S3-MINI family module (Espressif or equivalent) with integrated USB support, 3.3V operation, small castellated module for wearable pressure-sensor PCB"

Found 15 results.

Searching: "Find an ESP32-S3-MINI module suitable for a wearable pressure sensing PCB design. Prefer an Espressif ESP32-S3-MINI module or close equivalent with integrated USB support on the module family, suitable for 3.3V operation and compact embedded designs. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Searching: "16-bit ADS1115 I2C ADC, 3.3V supply compatible, address pin (ADDR) selectable for using two devices on one I2C bus"

Found 10 results.

Searching: "Find an ADS1115 16-bit I2C ADC for a 3.3V ESP32-based sensor board. Need the standard ADS1115 family device, suitable for using two devices on one I2C bus with selectable addresses. --- MANDATORY search constraints (these MUST be applied to all searches): fieldCategories: ["core","type","manufacturer","packaging"] hitsPerPage: 5"

Finished searching for components.

Clarifying component linking.

Because this is a published part project and you do not have edit access here, the best path is to start a new project for the full schematic.
A good starting set of library parts is:
The recommended workflow is to create a fresh project and have Copilot build the schematic from your spec, which matches the project-modification guidance for editing tasks and the action result that this should be done in a new project rather than this published part context.
Create the new project
Start the wearable pressure sensing project
If you want, I can next help you tighten the prompt before you open it, especially around the power section and connector choices.
Tighten the prompt
Use onboard charger
Add 3.3V regulator
22 days
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    step

    Seeed Studio XIAO-ESP32-S3-Sense.step

    Seeed Studio XIAO-ESP32-S3-Sense3D Model
    ESP32 se cam.svg

    ESP32 se cam.svg

    ESP32 se camDefault
    65652.png

    65652.png

    231023165652Thumbnail

    Seeed Studio XIAO ESP32S3 Sense

    Seeed Studio XIAO ESP32S3 Sense thumbnail
    Seeed Studio XIAO ESP32S3 leverages dual-core ESP32S3 chip, supporting both Wi-Fi and BLE wireless connectivities, which allows battery charge. It integrates built-in camera sensor, digital microphone. It offers 8MB PSRAM, 8MB FLASH, and external SD card slot. All of these make it suitable for embedded ML, like intelligent voice and vision AI.

    Properties

    Microcontroller

    113991115

    seeed studio

    files.seeedstudio.com/wiki/SeeedStudio-XIAO-ESP32S3/res/esp32-s3_datasheet.pdf

    seeedstudio.com/XIAO-ESP32S3-Sense-p-5639.html

    wiki.seeedstudio.com/xiao_esp32s3_getting_started/

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