Espressif ESP32-S3
Datasheet Summary And Pinout Analyzer
Aperçu
Summarize key specs, absolute max ratings, and pinout from this datasheet
Crimson
Architecture système
POWER
MCU
SENSOR
- POWER → MCUPowerProvides regulated 3.3V power to the MCU
- POWER → SENSOR_ENVPowerProvides 3.3V power to the environmental sensor
- POWER → SENSOR_AIRPowerProvides 3.3V power to the air quality sensor
- POWER → SENSOR_LIGHTPowerProvides 3.3V power to the ambient light sensor
- MCU → SENSOR_ENVI2CI2C bus for reading temperature, humidity, and pressure data
- MCU → SENSOR_AIRI2CI2C bus for reading TVOC and eCO2 air quality data
- MCU → SENSOR_LIGHTI2CI2C bus for reading ambient light level data
Nomenclature
| Référence | Type | Composant | Fabricant | Boîtier | Qté | Fiche technique | Correspondance |
|---|---|---|---|---|---|---|---|
| ME6211C50M3G | POWER | ME6211 3.3V LDO Voltage Regulator Converts USB-C 5V input to stable 3.3V for system power | MACOM Technology Solutions | SOT-23-3 | 1 | Correspondant | |
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| ESP32-S3-WROOM-1-N16R8 | MCU | Espressif ESP32-S3 Main system brain providing Wi-Fi and Bluetooth connectivity, controlling sensors and local logic | Espressif Systems | 41-SMD Module | 1 | Correspondant | |
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| BME280 | SENSOR | Bosch BME280 Measures temperature, humidity, and barometric pressure | Bosch Sensortec GmbH | LGA-8 | 1 | Correspondant | |
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| SGP30-2.5K | SENSOR | Sensirion SGP30 Measures TVOC and eCO2 indoor air quality | Sensirion AG | — | 1 | Correspondant | |
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| VEML7700-TR | SENSOR | Vishay VEML7700 High-accuracy ambient light sensing matching human eye response | Vishay Semiconductor Opto Division | 4-SMD, J-Lead | 1 | Correspondant | |
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Guide de fabrication
3-5 hoursIntermediate
1
Procurement & Preparation
- Procure all required BOM components including ME6211C50M3G, ESP32-S3-WROOM-1-N16R8, BME280, SGP30-2.5K, and VEML7700-TR.
- Prepare the PCB stencil, solder paste (SAC305), and organize pick-and-place feeders for power, MCU, and environmental sensor modules.
2
Hardware Assembly & Wiring
- Apply SAC305 solder paste to the PCB pads using the stainless steel stencil and alignment jig.
- Place the ME6211 3.3V LDO Voltage Regulator (ME6211C50M3G) and Espressif ESP32-S3 module (ESP32-S3-WROOM-1-N16R8) onto their designated pads.
- Place the Bosch BME280, Sensirion SGP30, and Vishay VEML7700 sensors, verifying the shared I2C bus lines (SDA, SCL) and power connections route correctly to the MCU.
- Pass the populated PCB assembly through a reflow oven following a standard lead-free profile (peak temperature ~245°C).
3
Firmware Setup
- Connect the ESP32-S3 module to the development PC via USB-C for programming and debugging.
- Configure the development environment (ESP-IDF / Arduino IDE) with required libraries for BME280, SGP30, and VEML7700 I2C communication.
- Compile and flash the firmware binary to the ESP32-S3, implementing sensor polling loops for temperature, humidity, pressure, TVOC, eCO2, and ambient light.
4
Testing & Calibration
- Perform a power-on current check to ensure the ME6211 LDO and ESP32-S3 idle state draw expected baseline current without short circuits.
- Validate I2C communication by scanning the bus to confirm all three sensor addresses (BME280, SGP30, VEML7700) respond correctly.
- Calibrate ambient light readings from the VEML7700 against a reference light meter and verify environmental baseline readings for the BME280 and SGP30 sensors.
Document
Smart Device
Design Overview
| Item | Details |
|---|---|
| Product Type | Smart Device |
| Key Functions | |
| Power Source | - |
| Connectivity | |
| Size | - |
| Environment | - |
| Difficulty | Intermediate |
| Est. Time | 3-5 hours |
System Architecture
Power Topology: USB-C 5V input feeds into an ME6211 3.3V LDO voltage regulator, which steps down the voltage to supply a clean 3.3V rail for the ESP32-S3 MCU and all I2C environmental sensors.
Module List
| Module ID | Type | Name | Function | Voltage |
|---|---|---|---|---|
| POWER | POWER | ME6211 3.3V LDO Voltage Regulator | Converts USB-C 5V input to stable 3.3V for system power | 5V to 3.3V |
| MCU | MCU | Espressif ESP32-S3 | Main system brain providing Wi-Fi and Bluetooth connectivity, controlling sensors and local logic | 3.3V |
| SENSOR_ENV | SENSOR | Bosch BME280 | Measures temperature, humidity, and barometric pressure | 3.3V |
| SENSOR_AIR | SENSOR | Sensirion SGP30 | Measures TVOC and eCO2 indoor air quality | 3.3V |
| SENSOR_LIGHT | SENSOR | Vishay VEML7700 | High-accuracy ambient light sensing matching human eye response | 3.3V |
Key Components
5/5 modules matched to real parts. See the BOM tab for the full component table.
ME6211 3.3V LDO Voltage Regulator (ME6211C50M3G)
Candidate 1 (ME6211C50M3G) matches the ME6211 LDO voltage regulator series requested in the module description.
Espressif ESP32-S3 (ESP32-S3-WROOM-1-N16R8)
ESP32-S3-WROOM-1-N16R8 is a core surface-mount module providing the exact ESP32-S3 system brain functionality with Wi-Fi
Build Summary
- Difficulty: Intermediate
- Estimated time: 3-5 hours
- Tools required: Stencil Printer, Squeegee, Pick-and-place machine, Precision tweezers, Reflow Oven, Digital Multimeter
See the Build tab for the full step-by-step assembly guide.
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