# Continental Green Dejarik ## Description Low-Power ESP32 USB-C Environmental Sensor Node with Integrated Power Protection ## Project Details - **Owner:** kumetia - **Created:** 1/22/2026 - **Last Updated:** 1/22/2026 - **Visibility:** Public - **Manufacturing Quantity Target:** 10 - **Domain:** Consumer Electronics - **Software:** Arduino - **Power Requirements:** USB - **License:** https://creativecommons.org/licenses/by/4.0/ - **Net Type:** Power - **Operating Voltage:** 5V - **Connectivity:** WiFi - **Reference Design URL:** https://github.com/espressif/esp-idf/tree/master/examples/peripherals/adc ## Key Components ### D1 — [SMBJ5.0A](https://www.flux.ai/adrian95/smbj50a~a9w.md) - Manufacturer Part Number: SMBJ5.0A - Package: DO-214AA - Role: Protection - Datasheet URL: https://www.bourns.com/docs/Product-Datasheets/SMBJ.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Diode - Role Details: Transient voltage suppression for USB-C VBUS 5V line - Manufacturer Name: Bourns Inc. **Pins:** - A [pin 2] - K [pin 1] ### D2 — [SP0502BAHT](https://www.flux.ai/kicad-part-library/sp0502baht~nla.md) - Manufacturer Part Number: SP0502BAHT - Manufacturer Name: Texas Instruments Inc. - Role Details: ESD protection for USB-C VBUS 5V line - Role: Protection - Package: SOT-23 - Package or Case Code: SOT-23 - Datasheet URL: http://www.littelfuse.com//media/files/littelfuse/technical%20resources/documents/data%20sheets/sp05xxba.pdf **Pins:** - A [pin 3] - K [pin 1] - K [pin 2] ### J1 — [2024100002](https://www.flux.ai/adrian95/2024100002~atk.md) - Role Details: USB-C power inlet receptacle, sink-only - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/834/202410002_Pkg_Spec.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Molex - Role: Connector - Manufacturer Part Number: 2024100002 - Part Type: Connector **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DA- [pin A7] - DA+ [pin A6] - DB- [pin B7] - DB+ [pin B6] - GND1 [pin A1] - GND2 [pin A12] - GND3 [pin B1] - GND4 [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD1 [pin SH1] - SHIELD2 [pin SH2] - SHIELD3 [pin SH3] - SHIELD4 [pin SH4] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS1 [pin A4] - VBUS2 [pin A9] - VBUS3 [pin B4] - VBUS4 [pin B9] ### J2 — [0901301106](https://www.flux.ai/adrian95/0901301106~t1x.md) - Datasheet URL: https://tools.molex.com/pdm_docs/sd/901301106_sd.pdf - Role Details: Programming header for ESP32 UART (TX, RX), EN, IO0, 3.3V, GND - Part Type: Connector - Manufacturer Name: Molex - Manufacturer Part Number: 0901301106 - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] - 4 [pin 4] - 5 [pin 5] - 6 [pin 6] ### LED1 — [SM0805HCL](https://www.flux.ai/adrian95/sm0805hcl~2dj.md) - Part Type: LED - Role Details: Status indicator LED - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: SM0805HCL - Package: SMD_0805_2012Metric - Datasheet URL: https://www.bivar.com/parts_content/Datasheets/SM0805HCL.pdf - Manufacturer Name: Bivar Inc. - Role: LED **Pins:** - A [pin 2] - K [pin 1] ### SW1 — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Part Type: Switch - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Role: Switch - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Role Details: Reset pushbutton - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### U1 — [ESP32-C3-WROOM-02-N4](https://www.flux.ai/vasy_skral/esp32-c3-wroom-02-n4~tqi.md) - Manufacturer Part Number: ESP32-C3-WROOM-02-N4 - Role: Processing - Part Type: Module - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-c3-wroom-02_datasheet_en.pdf - Symbol Style: Parametric - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: Main MCU, Wi-Fi 2.4 GHz and BLE 5.x - Manufacturer Name: Espressif Systems **Pins:** - 3V3 [pin 1] - EN [pin 2] - GND [pin 38] - GND [pin 32] - GND [pin 37] - GND [pin 22] - GND [pin 19] - GND [pin 34] - GND [pin 31] - GND [pin 21] - GND [pin 39] - GND [pin 36] - GND [pin 9] - GND [pin 25] - GND [pin 33] - GND [pin 29] - GND [pin 30] - GND [pin 28] - GND [pin 20] - GND [pin 35] - GND [pin 26] - GND [pin 24] - GND [pin 23] - GND [pin 27] - IO0 [pin 18] - IO1 [pin 17] - IO10 [pin 10] - IO18 [pin 13] - IO19 [pin 14] - IO2 [pin 16] - IO3 [pin 15] - IO4 [pin 3] - IO5 [pin 4] - IO6 [pin 5] - IO7 [pin 6] - IO8 [pin 7] - IO9 [pin 8] - RXD [pin 11] - TXD [pin 12] ### U2 — [SHT85](https://www.flux.ai/jecstronic/sht85~tto.md) - Role: Sensor - Manufacturer Part Number: SHT85 - Manufacturer Name: Sensirion AG - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Sensor - Role Details: Digital temperature and humidity sensor, I2C interface, ±1.5% RH accuracy - Datasheet URL: https://developer.sensirion.com/fileadmin/user_upload/customers/sensirion/Dokumente/2_Humidity_Sensors/Datasheets/Sensirion_Humidity_Sensors_SHT85_Datasheet.pdf **Pins:** - SCL [pin 1] - SDA [pin 4] - VDD [pin 2] - VSS [pin 3] ### U3 — [TPS25210LRPWR](https://www.flux.ai/adrian95/tps25210lrpwr~9ww.md) - Manufacturer Part Number: TPS25210LRPWR - Role Details: eFuse for USB-C 5V input with 0.5–3 A OCP, reverse polarity blocking, overvoltage and undervoltage protection - Role: Protection - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Texas Instruments - Part Type: Power Management - Package or Case Code: TPS25210LRPWR - Datasheet URL: https://www.ti.com/lit/ds/symlink/tps2521.pdf?ts=1625110620252&ref_url=https%253A%252F%252Fwww.ti.com%252Fstore%252Fti%252Fen%252Fp%252Fproduct%252F%253Fp%253DTPS25210LRPWR **Pins:** - DVDT_1 [pin 7] - DVDT_2 [pin 14] - EN/UVLO_1 [pin 1] - EN/UVLO_2 [pin 12] - GND [pin 8] - ILM [pin 9] - IN [pin 5] - ITIMER_1 [pin 10] - ITIMER_2 [pin 11] - OUT [pin 6] - OVCSEL [pin 2] - PG [pin 3] - PGTH_1 [pin 4] - PGTH_2 [pin 13] ### U4 — [TLV62568DDC](https://www.flux.ai/kicad-part-library/tlv62568ddc~vt.md) - Package: SOT-23-6 - Manufacturer Part Number: TLV62568DDC - Package or Case Code: SOT-23-6 - Manufacturer Name: Texas Instruments Inc. - Role: Power Conversion - Role Details: Buck converter stepping 5V to 3.3V for ESP32 and sensor - Datasheet URL: http://www.ti.com/lit/ds/symlink/tlv62568.pdf **Pins:** - EN [pin 1] - FB [pin 6] - GND [pin 2] - PG [pin 5] - SW [pin 3] - VIN [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/kumetia/continental-green-dejarik~x3](https://www.flux.ai/kumetia/continental-green-dejarik~x3).* --- *Generated from [https://www.flux.ai/kumetia/continental-green-dejarik~x3](https://www.flux.ai/kumetia/continental-green-dejarik~x3)*