# ESP32-WROOM-32E Reference Design ## Description This project is a reference design for an ESP32-WROOM-32E based device. It features USB-C for power and data transfer, onboard voltage regulation, and multiple peripheral connections. It also includes a CH340C for USB to serial conversion #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #referenceDesign #simple-embedded #espressif #template #reference-design ## Project Details - **Owner:** elierugagi - **Created:** 5/22/2024 - **Last Updated:** 6/25/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ ## Key Components ### K1 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K10 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - Part Type: Relay - Manufacturer Part Number: SRD-12VDC-SL-C - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K11 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K12 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Part Number: SRD-12VDC-SL-C - 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 - Part Type: Relay - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K13 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - Part Type: Relay - Manufacturer Part Number: SRD-12VDC-SL-C - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K14 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - Part Type: Relay - Manufacturer Part Number: SRD-12VDC-SL-C - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K2 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Part Number: SRD-12VDC-SL-C - 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 - Part Type: Relay - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K3 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - Part Type: Relay - Manufacturer Part Number: SRD-12VDC-SL-C - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K4 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K5 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K6 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K7 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Part Number: SRD-12VDC-SL-C - 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 - Part Type: Relay - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K8 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Part Number: SRD-12VDC-SL-C - 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 - Part Type: Relay - Manufacturer Name: Ningbo Songle Relay **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### K9 — [SRD-12VDC-SL-C](https://www.flux.ai/jecstronic/srd-12vdc-sl-c~ofu.md) - Manufacturer Name: Ningbo Songle Relay - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SRD-12VDC-SL-C - Part Type: Relay - Datasheet URL: https://datasheet.lcsc.com/lcsc/2304140030_Ningbo-Songle-Relay-SRD-12VDC-SL-C_C30431.pdf **Pins:** - ~ [pin NC] - ~ [pin NO] - ~ [pin COIL1] - ~ [pin COM] - ~ [pin COIL2] ### U1 — [ULN2004AN](https://www.flux.ai/adrian95/uln2004an~b5u.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Manufacturer Part Number: ULN2004AN - Datasheet URL: https://www.ti.com/lit/ds/symlink/ulq2004a.pdf - Part Type: Integrated Circuit **Pins:** - 1B [pin 1] - 1C [pin 16] - 2B [pin 2] - 2C [pin 15] - 3B [pin 3] - 3C [pin 14] - 4B [pin 4] - 4C [pin 13] - 5B [pin 5] - 5C [pin 12] - 6B [pin 6] - 6C [pin 11] - 7B [pin 7] - 7C [pin 10] - COM [pin 9] - E [pin 8] ### U2 — [ULN2004AN](https://www.flux.ai/adrian95/uln2004an~b5u.md) - Datasheet URL: https://www.ti.com/lit/ds/symlink/ulq2004a.pdf - Part Type: Integrated Circuit - Manufacturer Part Number: ULN2004AN - Manufacturer Name: Texas Instruments - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1B [pin 1] - 1C [pin 16] - 2B [pin 2] - 2C [pin 15] - 3B [pin 3] - 3C [pin 14] - 4B [pin 4] - 4C [pin 13] - 5B [pin 5] - 5C [pin 12] - 6B [pin 6] - 6C [pin 11] - 7B [pin 7] - 7C [pin 10] - COM [pin 9] - E [pin 8] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/elierugagi/esp32-wroom-32e-reference-design~nz](https://www.flux.ai/elierugagi/esp32-wroom-32e-reference-design~nz).* --- *Generated from [https://www.flux.ai/elierugagi/esp32-wroom-32e-reference-design~nz](https://www.flux.ai/elierugagi/esp32-wroom-32e-reference-design~nz)*