ESP32 Wi-Fi Environment Station
Build a local wireless temperature and humidity dashboard and verify power stability during Wi-Fi transmission.
Problem statement
Build a local wireless temperature and humidity dashboard and verify power stability during Wi-Fi transmission.
System design
Circuit & Wiring Studio
Exact target requiredDrag components. In Connect mode, select one pin and then another pin.
Rich media learning
Print lab worksheetInstructor media is being prepared for this project.
Project execution and evidence
Log in to start this practical, save readings and submit evidence.
Log in to startComponents required
Contact Us| Component | Qty | Notes |
|---|---|---|
| ESP32 development board | 1 | Wi-Fi MCUnTemperature/humidity sensor |
Pin-connection table
| Controller pin | Connected device | Device pin | Voltage / notes |
|---|---|---|---|
| GPIO21 | OLED | SDA | 3.3 V logicnGPIO22 |
Project files
Source-code files
Instructor file pending.
PCB and Gerber files
Instructor file pending.
Enclosure design files
Instructor file pending.
Testing and observations
- Verify idle current and 3.3 V rail.nRead sensor locally before enabling Wi-Fi.nConnect to WLAN and log reset reason.nCompare dashboard values with a reference instrument.
| Test | Expected | Instrument | Acceptance criteria |
|---|---|---|---|
| 3.3 V rail | Stable during Wi-Fi burst | Oscilloscope | No brownoutnTemperature |
Viva questions
Why can Wi-Fi cause resets?
Transmit bursts can expose a weak supply path.nWhy test subsystems first?
Verify voltage, polarity, GPIO limits and isolation before power-up. Use current limiting and disconnect power before wiring changes.