Connecting ADS-1115 to ESP32

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inbusiness

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)
21 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
21 days
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GND
3V3
TOUCH1_GPIO1_A0_D0
TOUCH3_GPIO3_A2_D2
TOUCH6_GPIO6_SCL_A5_D5
D7_RX_GPIO44
5V
TOUCH2_GPIO2_A1_D1
TOUCH4_GPIO4_A3_D3
D9_A9_MISO_GPIO8_TOUCH8
D10_A10_MOSI_GPIO9_TOUCH9
GPIO43_TX_D6
D8_A8_SCK_GPIO7_TOUCH7
TOUCH5_GPIO5_SDA_A4_D4
  • Ground
    Ground
    A common return path for electric current. Commonly known as ground.
    jharwinbarrozo
    20.5M
  • Net Portal
    Net Portal
    Wirelessly connects nets on schematic. Used to organize schematics and separate functional blocks. To wirelessly connect net portals, give them same designator. #portal
    jharwinbarrozo
    43.0M
  • Power Net Portal
    Power Net Portal
    Wirelessly connects power nets on schematic. Identical to the net portal, but with a power symbol. Used to organize schematics and separate functional blocks. To wirelessly connect power net portals, give them the same designator. #portal #power
    jharwinbarrozo
    11.4M
  • Generic Resistor
    Generic Resistor
    A generic fixed resistor ideal for rapid circuit topology development. Its footprint automatically adapts based on the selected package case code—supporting 0402, 0603, 0805, 1203, and many other standard SMD packages, as well as axial horizontal and vertical configurations. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard resistor values: 1.0 ohm, 10 ohm, 100 ohm, 1.0k ohm, 10k ohm, 100k ohm, 1.0M ohm 1.1 ohm, 11 ohm, 110 ohm, 1.1k ohm, 11k ohm, 110k ohm, 1.1M ohm 1.2 ohm, 12 ohm, 120 ohm, 1.2k ohm, 12k ohm, 120k ohm, 1.2M ohm 1.3 ohm, 13 ohm, 130 ohm, 1.3k ohm, 13k ohm, 130k ohm, 1.3M ohm 1.5 ohm, 15 ohm, 150 ohm, 1.5k ohm, 15k ohm, 150k ohm, 1.5M ohm 1.6 ohm, 16 ohm, 160 ohm, 1.6k ohm, 16k ohm, 160k ohm, 1.6M ohm 1.8 ohm, 18 ohm, 180 ohm, 1.8K ohm, 18k ohm, 180k ohm, 1.8M ohm 2.0 ohm, 20 ohm, 200 ohm, 2.0k ohm, 20k ohm, 200k ohm, 2.0M ohm 2.2 ohm, 22 ohm, 220 ohm, 2.2k ohm, 22k ohm, 220k ohm, 2.2M ohm 2.4 ohm, 24 ohm, 240 ohm, 2.4k ohm, 24k ohm, 240k ohm, 2.4M ohm 2.7 ohm, 27 ohm, 270 ohm, 2.7k ohm, 27k ohm, 270k ohm, 2.7M ohm 3.0 ohm, 30 ohm, 300 ohm, 3.0K ohm, 30K ohm, 300K ohm, 3.0M ohm 3.3 ohm, 33 ohm, 330 ohm, 3.3k ohm, 33k ohm, 330k ohm, 3.3M ohm 3.6 ohm, 36 ohm, 360 ohm, 3.6k ohm, 36k ohm, 360k ohm, 3.6M ohm 3.9 ohm, 39 ohm, 390 ohm, 3.9k ohm, 39k ohm, 390k ohm, 3.9M ohm 4.3 ohm, 43 ohm, 430 ohm, 4.3k ohm, 43K ohm, 430K ohm, 4.3M ohm 4.7 ohm, 47 ohm, 470 ohm, 4.7k ohm, 47k ohm, 470k ohm, 4.7M ohm 5.1 ohm, 51 ohm, 510 ohm, 5.1k ohm, 51k ohm, 510k ohm, 5.1M ohm 5.6 ohm, 56 ohm, 560 ohm, 5.6k ohm, 56k ohm, 560k ohm, 5.6M ohm 6.2 ohm, 62 ohm, 620 ohm, 6.2k ohm, 62K ohm, 620K ohm, 6.2M ohm 6.8 ohm, 68 ohm, 680 ohm, 6.8k ohm, 68k ohm, 680k ohm, 6.8M ohm 7.5 ohm, 75 ohm, 750 ohm, 7.5k ohm, 75k ohm, 750k ohm, 7.5M ohm 8.2 ohm, 82 ohm, 820 ohm, 8.2k ohm, 82k ohm, 820k ohm, 8.2M ohm 9.1 ohm, 91 ohm, 910 ohm, 9.1k ohm, 91k ohm, 910k ohm, 9.1M ohm #generics #CommonPartsLibrary
    jharwinbarrozo
    1.5M
  • Generic Capacitor
    Generic Capacitor
    A generic fixed capacitor ideal for rapid circuit topology development. You can choose between polarized and non-polarized types, its symbol and the footprint will automatically adapt based on your selection. Supported options include standard SMD sizes for ceramic capacitors (e.g., 0402, 0603, 0805), SMD sizes for aluminum electrolytic capacitors, and through-hole footprints for polarized capacitors. Save precious design time by seamlessly add more information to this part (value, footprint, etc.) as it becomes available. Standard capacitor values: 1.0pF, 10pF, 100pF, 1000pF, 0.01uF, 0.1uF, 1.0uF, 10uF, 100uF, 1000uF, 10000uF 1.1pF, 11pF, 110pF, 1100pF 1.2pF, 12pF, 120pF, 1200pF 1.3pF, 13pF, 130pF, 1300pF 1.5pF, 15pF, 150pF, 1500pF, 0.015uF, 0.15uF, 1.5uF, 15uF, 150uF, 1500uF 1.6pF, 16pF, 160pF, 1600pF 1.8pF, 18pF, 180pF, 1800pF 2.0pF, 20pF, 200pF, 2000pF 2.2pF, 22pF, 220pF, 2200pF, 0.022uF, 0.22uF, 2.2uF, 22uF, 220uF, 2200uF 2.4pF, 24pF, 240pF, 2400pF 2.7pF, 27pF, 270pF, 2700pF 3.0pF, 30pF, 300pF, 3000pF 3.3pF, 33pF, 330pF, 3300pF, 0.033uF, 0.33uF, 3.3uF, 33uF, 330uF, 3300uF 3.6pF, 36pF, 360pF, 3600pF 3.9pF, 39pF, 390pF, 3900pF 4.3pF, 43pF, 430pF, 4300pF 4.7pF, 47pF, 470pF, 4700pF, 0.047uF, 0.47uF, 4.7uF, 47uF, 470uF, 4700uF 5.1pF, 51pF, 510pF, 5100pF 5.6pF, 56pF, 560pF, 5600pF 6.2pF, 62pF, 620pF, 6200pF 6.8pF, 68pF, 680pF, 6800pF, 0.068uF, 0.68uF, 6.8uF, 68uF, 680uF, 6800uF 7.5pF, 75pF, 750pF, 7500pF 8.2pF, 82pF, 820pF, 8200pF 9.1pF, 91pF, 910pF, 9100pF #generics #CommonPartsLibrary
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    1.5M
  • Generic Inductor
    Generic Inductor
    A generic fixed inductor suitable for rapid circuit topology development. The footprint automatically adapts based on the selected package, supporting standard SMD sizes (e.g., 0402, 0603, 0805) as well as well-known inductor packages such as SDR1806, PA4320, SRN6028, and SRR1260. Standard inductor values: 1.0 nH, 10 nH, 100 nH, 1.0 µH, 10 µH, 100 µH, 1.0 mH 1.2 nH, 12 nH, 120 nH, 1.2 µH, 12 µH, 120 µH, 1.2 mH 1.5 nH, 15 nH, 150 nH, 1.5 µH, 15 µH, 150 µH, 1.5 mH 1.8 nH, 18 nH, 180 nH, 1.8 µH, 18 µH, 180 µH, 1.8 mH 2.2 nH, 22 nH, 220 nH, 2.2 µH, 22 µH, 220 µH, 2.2 mH 2.7 nH, 27 nH, 270 nH, 2.7 µH, 27 µH, 270 µH, 2.7 mH 3.3 nH, 33 nH, 330 nH, 3.3 µH, 33 µH, 330 µH, 3.3 mH 3.9 nH, 39 nH, 390 nH, 3.9 µH, 39 µH, 390 µH, 3.9 mH 4.7 nH, 47 nH, 470 nH, 4.7 µH, 47 µH, 470 µH, 4.7 mH 5.6 nH, 56 nH, 560 nH, 5.6 µH, 56 µH, 560 µH, 5.6 mH 6.8 nH, 68 nH, 680 nH, 6.8 µH, 68 µH, 680 µH, 6.8 mH 8.2 nH, 82 nH, 820 nH, 8.2 µH, 82 µH, 820 µH, 8.2 mH #generics #CommonPartsLibrary
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    15.8k
  • Terminal
    Terminal
    An electrical connector acting as reusable interface to a conductor and creating a point where external circuits can be connected.
    natarius
  • RMCF0805JT47K0
    RMCF0805JT47K0
    47 kOhms ±5% 0.125W, 1/8W Chip Resistor 0805 (2012 Metric) Automotive AEC-Q200 Thick Film #forLedBlink
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  • 875105359001
    875105359001
    10uF Capacitor Aluminum Polymer 20% 16V SMD 5x5.3mm #forLedBlink #commonpartslibrary #capacitor #aluminumpolymer #radialcan
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  • CTL1206FYW1T
    CTL1206FYW1T
    Yellow 595nm LED Indication - Discrete 1.7V 1206 (3216 Metric) #forLedBlink
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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/

U

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