# Tarea S5-Rolando gamboa ## Description ESP32-WROOM-32 Sensor & Relay Control PCB with Power Management ## Project Details - **Owner:** larc772 - **Created:** 11/17/2025 - **Last Updated:** 11/17/2025 - **Visibility:** Public - **System Architecture:** ```mermaid flowchart LR subgraph Power V5["5 V Input"] V33["3.3 V Rail"] GND("GND") end V5 -->|Input| Reg["3.3 V Regulator"] Reg -->|Output| V33 V5 -->|Supply| Relay["Opto-isolated Relay Module (5 V)"] subgraph Controller ESP["ESP32-WROOM-32"] end subgraph Sensor DHT["DHT22 Sensor"] end V33 --> ESP V33 --> DHT GND --> Reg GND --> ESP GND --> DHT GND --> Relay ESP -->|GPIO14 (Data)| DHT ESP -->|GPIO15 (Drive)| Relay Con5["5 V Connector"] --> V5 Term["Power Screw Terminals (+/–)"] --> V5 Term --> GND Prog["Programming Header"] --> ESP ``` ## Key Components ### D2 — [LED THT](https://www.flux.ai/jharwinbarrozo/led-tht~gr.md) - Breakdown Voltage: 0V - Forward Voltage: 1.70 - Series Resistance: 0.42Ω - Saturation Current: 93.2e-12A - Emission Coefficient: 3.73 **Pins:** - A [pin 2] - K [pin 1] ### K1 — [Relay-12VDC-SL-C](https://www.flux.ai/deadzerok/relay-12vdc-sl-c~zh.md) - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - Manufacturer Name: Ningbo Songle Relay - Manufacturer Part Number: SRD-12VDC-SL-C - Part Type: Relay **Pins:** - Coil-1 [pin COIL1] - Coil-2 [pin COIL2] - Com-3 [pin COM] - NC [pin NC] - NO [pin NO] ### U1 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Role Details: Main MCU - Part Type: Microcontroller - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ESP32-WROOM-32D - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - Role: Microcontroller - Manufacturer Name: Espressif Systems **Pins:** - 3.3V [pin 2] - AGND [pin 39] - CLK [pin 20] - CMD [pin 19] - EN [pin 3] - GND [pin 38] - GND [pin 15] - GND [pin 1] - 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 — [DHT22](https://www.flux.ai/vasy_skral/dht22~ju8.md) - Symbol Style: Parametric - Role Details: Humidity and temperature measurement - Manufacturer Part Number: DHT22 - Role: Sensing - Package or Case Code: Module - Manufacturer Name: Asair - Part Type: Sensor - Datasheet URL: https://cdn-shop.adafruit.com/datasheets/Digital+humidity+and+temperature+sensor+AM2302.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - DATA [pin 2] - GND [pin 4] - NULL [pin 3] - VDD [pin 1] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/larc772/tarea-s5-rolando-gamboa~u5](https://www.flux.ai/larc772/tarea-s5-rolando-gamboa~u5).* --- *Generated from [https://www.flux.ai/larc772/tarea-s5-rolando-gamboa~u5](https://www.flux.ai/larc772/tarea-s5-rolando-gamboa~u5)*