# (Schematic of the project) Smart device ## Description Welcome to your new project. Imagine what you can build here. ## Project Details - **Owner:** s4myuuel - **Created:** 5/3/2024 - **Last Updated:** 10/25/2025 - **Visibility:** Public ## Key Components ### 3.3V LDO — [LM2596 DC-DC buck converter](https://www.flux.ai/vasy_skral/lm2596-dc-dc-buck-converter~2q1.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit **Pins:** - IN - [pin 2] - IN + [pin 1] - OUT - [pin 3] - OUT + [pin 4] ### Humi & Temp Sensor — [AHT20+BMP280 Module](https://www.flux.ai/vasyl/aht20plusbmp280-module~rdq.md) - Part Type: Module - Datasheet URL: https://files.seeedstudio.com/wiki/Grove-AHT20_I2C_Industrial_Grade_Temperature_and_Humidity_Sensor/AHT20-datasheet-2020-4-16.pdf - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - GND [pin 2] - SCL [pin 1] - SDA [pin 3] - VDD [pin 4] ### M1 — [DC Motor](https://www.flux.ai/vasyl/dc-motor~ku.md) **Pins:** - - - + ### Relay #1 — [KY-019](https://www.flux.ai/vasyl/ky-019~t4.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811021933_Ningbo-Songle-Relay-SRD-05VDC-SL-C_C35449.pdf - Manufacturer Part Number: KY-019 - Manufacturer Name: Keyes SR1 - Part Type: Relay Module **Pins:** - COM [pin COM] - GND [pin A2] - NC [pin NC] - NO [pin NO] - Signal - VCC [pin A1] ### Relay #2 — [KY-019](https://www.flux.ai/vasyl/ky-019~t4.md) - Part Type: Relay Module - Manufacturer Name: Keyes SR1 - Manufacturer Part Number: KY-019 - Datasheet URL: https://datasheet.lcsc.com/lcsc/1811021933_Ningbo-Songle-Relay-SRD-05VDC-SL-C_C35449.pdf **Pins:** - COM [pin COM] - GND [pin A2] - NC [pin NC] - NO [pin NO] - Signal - VCC [pin A1] ### Thermoelectric — [CFR-25JB-52-1K](https://www.flux.ai/jecstronic/cfr-25jb-52-1k~wg0.md) - License: https://creativecommons.org/licenses/by/4.0/ - Resistance: no valΩ - Part Type: Resistor - Manufacturer Part Number: CFR-25JB-52-1K - Datasheet URL: https://www.yageo.com/upload/media/product/productsearch/datasheet/lr/YAGEO%20CFR_datasheet_2021v0.pdf - Manufacturer Name: Yageo **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [ESP32-WROOM-32E](https://www.flux.ai/vasyl/esp32-wroom-32e~epi.md) - Part Type: Integrated Circuit - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Espressif Systems - Manufacturer Part Number: ESP32-WROOM-32 **Pins:** - EN [pin 3] - GND [pin 38] - GND [pin 39] - 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/IO3 [pin 34] - SCK/CLK [pin 20] - SCS/CMD [pin 19] - SDI/SD1 [pin 22] - SDO/SD0 [pin 21] - SENSOR_VN [pin 5] - SENSOR_VP [pin 4] - SHD/SD2 [pin 17] - SWP/SD3 [pin 18] - TXD0/IO1 [pin 35] - VDD [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/s4myuuel/schematic-of-the-project-smart-device~zp](https://www.flux.ai/s4myuuel/schematic-of-the-project-smart-device~zp).* --- *Generated from [https://www.flux.ai/s4myuuel/schematic-of-the-project-smart-device~zp](https://www.flux.ai/s4myuuel/schematic-of-the-project-smart-device~zp)*