# Solar ESP32 Lampensteuerung ## Description Solarbetriebene 12V-Lampensteuerung mit LiPo-Akkuladung, XIAO ESP32-C3 Steuerung, Helligkeitssensor, Batteriemessung und MOSFET-Ausgang für ein 12V-LED-Modul. ## Project Details - **Owner:** kopernikus - **Created:** 6/18/2026 - **Last Updated:** 6/18/2026 - **Visibility:** Public ## Key Components ### D1 — [SM6T18A](https://www.flux.ai/jecstronic/sm6t18a~t3f.md) - Manufacturer Name: STMicroelectronics - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: 18V unidirektionale TVS an PV_IN nach Eingangssicherung/Rückstromdiode - Manufacturer Part Number: SM6T18A - Part Type: Diode - Role: Clamping - Datasheet URL: https://www.mouser.com/datasheet/2/389/sm6t100a-1916590.pdf **Pins:** - A [pin 2] - K [pin 1] ### D2 — [SM6T18A](https://www.flux.ai/jecstronic/sm6t18a~t3f.md) - Datasheet URL: https://www.mouser.com/datasheet/2/389/sm6t100a-1916590.pdf - Part Type: Diode - Role Details: 18V TVS für 3S LiPo/SYS_12V Rail; 3S voll = 12.6V - Manufacturer Part Number: SM6T18A - Role: Clamping - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: STMicroelectronics **Pins:** - A [pin 2] - K [pin 1] ### D3 — [SM6T18A](https://www.flux.ai/jecstronic/sm6t18a~t3f.md) - Role Details: 18V TVS am LED-Ausgang nach Ausgangssicherung - Datasheet URL: https://www.mouser.com/datasheet/2/389/sm6t100a-1916590.pdf - Part Type: Diode - Manufacturer Part Number: SM6T18A - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: STMicroelectronics - Role: Clamping **Pins:** - A [pin 2] - K [pin 1] ### D4 — [B340B-13-F](https://www.flux.ai/adrian95/b340b-13-f~y1g.md) - Part Type: Diode - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/844/B320B-B360B_Rev10-2.pdf - Role Details: 40V/3A Schottky in Serie zwischen PV-Terminal und Lade-IC-Eingang - Manufacturer Part Number: B340B-13-F - Role: Reverse Polarity Protection - Manufacturer Name: Diodes Incorporated - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### F1 — [SMD2920-250-24](https://www.flux.ai/adrian95/smd2920-250-24~jof.md) - Role Details: 3S LiPo Eingangsschutz, 2.5A hold / 5A trip, 24V; LED-Dauerstrom sollte ≤2A bleiben - Part Type: Fuse - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: R+O - LCSC Part Number: C47753886 - Role: Protection - Manufacturer Part Number: SMD2920-250-24 - Datasheet URL: https://www.lcsc.com/datasheet/C47753886.pdf **Pins:** - P1 [pin 1] - P2 [pin 2] ### F2 — [SMD2920-250-24](https://www.flux.ai/adrian95/smd2920-250-24~jof.md) - Manufacturer Part Number: SMD2920-250-24 - Role Details: LED-Ausgangsschutz, 2.5A hold / 5A trip, 24V; passend für vorläufige ≤2A LED-Last - Role: Protection - Datasheet URL: https://www.lcsc.com/datasheet/C47753886.pdf - LCSC Part Number: C47753886 - Part Type: Fuse - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: R+O **Pins:** - P1 [pin 1] - P2 [pin 2] ### F3 — [SMD2920-250-24](https://www.flux.ai/adrian95/smd2920-250-24~jof.md) - Manufacturer Part Number: SMD2920-250-24 - Datasheet URL: https://www.lcsc.com/datasheet/C47753886.pdf - Part Type: Fuse - License: https://creativecommons.org/licenses/by/4.0/ - LCSC Part Number: C47753886 - Manufacturer Name: R+O - Role: Protection - Role Details: PV-Eingangsschutz, 2.5A hold / 5A trip, 24V **Pins:** - P1 [pin 1] - P2 [pin 2] ### J1 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1757242 - Part Type: Connector - Role Details: PV+ / PV- Schraubterminal 5.08mm - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Name: Phoenix Contact **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J2 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Manufacturer Name: Phoenix Contact - Role: Connector - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role Details: BAT+ / BAT- Schraubterminal 5.08mm - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1757242 - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J3 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Role: Connector - Role Details: LED+ direkt an Akku/System, LED- über MOSFET geschaltet - Manufacturer Name: Phoenix Contact - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Manufacturer Part Number: 1757242 - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J4 — [Phoenix Contact 1757242](https://www.flux.ai/adrian95/phoenix-contact-1757242~wl2.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 1757242 - Role: Connector - Datasheet URL: https://www.phoenixcontact.com/product/pdf/api/v1/MTc1NzI0Mg?_realm=us&_locale=en-US&blocks=commercial-data%2Ctechnical-data%2Cdrawings%2Capprovals%2Cclassifications%2Cenvironmental-compliance-data%2Call-accessories - Role Details: 3.3V versorgter analoger Lichtsensor: VCC/SIGNAL bzw. zweipoliger Sensor gegen GND - Manufacturer Name: Phoenix Contact **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### Q1 — [IRLML6244TRPBF](https://www.flux.ai/lcsc/irlml6244trpbf~zh0a.md) - Package or Case Code: SOT-23-3_L2.9-W1.3-P1.90-LS2.4-BR - LCSC Part Number: C143946 - Manufacturer Name: Infineon(英飞凌) - Role Details: Schaltet LED- Ausgang per ESP32 GPIO; für ~2A Zielstrom mit Layout-Thermik prüfen - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/2409302202_Infineon-Technologies-IRLML6244TRPBF_C143946.pdf - Manufacturer Part Number: IRLML6244TRPBF - Role: Low-Side Switch - Product Info Url: https://lcsc.com/product-detail/MOSFET_Infineon_IRLML6244TRPBF_IRLML6244TRPBF_C143946.html - Part Type: MOSFETs - JLCPCB Part Class: Extended Part **Pins:** - D [pin 3] - G [pin 1] - S [pin 2] ### U1 — [Seeed Studio XIAO ESP32C3](https://www.flux.ai/seeedstudio/seeed-studio-xiao-esp32c3~b0.md) - Purchase Url: https://www.seeedstudio.com/Seeed-XIAO-ESP32C3-p-5431.html - Role Details: Liest Akku/PV/Helligkeit und schaltet LED-Ausgang - Role: MCU Module - Part Type: Microcontroller - Datasheet URL: https://files.seeedstudio.com/wiki/XIAO_WiFi/Resources/esp32-c3_datasheet.pdf - Manufacturer Part Number: 113991054 - Manufacturer Name: Seeed Studio **Pins:** - 3V3 [pin 12] - 5V [pin 14] - D10_MOSI_D10 [pin 11] - D7_RX_GPIO20 [pin 8] - D8_SCK_GPIO8 [pin 9] - D9_MISO_GPIO9 [pin 10] - GND [pin 13] - GPIO2_A0_D0 [pin 1] - GPIO21_TX_D6 [pin 7] - GPIO3_A1_D1 [pin 2] - GPIO4_A2_D2 [pin 3] - GPIO5_A3_D3 [pin 4] - GPIO6_SDA_D4 [pin 5] - GPIO7_SCL_D5 [pin 6] ### U2 — [BQ25672RQMR](https://www.flux.ai/vasy_skral/bq25672rqmr~k04.md) - Manufacturer Part Number: BQ25672RQMR - Part Type: Integrated Circuit - Manufacturer Name: Texas Instruments - Role Details: 12V-PV-Eingang lädt mehrzelligen LiPo-Akku; genaue Zellzahl/Reglerwerte müssen final bestätigt werden - Datasheet URL: https://www.ti.com/lit/ds/symlink/bq25672.pdf - Role: Battery Charger **Pins:** - ~CE [pin 13] - ~INT [pin 21] - ~QON [pin 12] - ACDRV1 [pin 11] - ACDRV2 [pin 10] - BAT [pin 23] - BAT [pin 22] - BATP [pin 18] - BTST1 [pin 4] - BTST2 [pin 19] - D- [pin 7] - D+ [pin 6] - GND [pin 27] - ILIM_HIZ [pin 17] - PMID [pin 29] - PROG [pin 20] - REGN [pin 5] - SCL [pin 14] - SDA [pin 15] - SDRV [pin 24] - STAT [pin 1] - SW1 [pin 28] - SW2 [pin 26] - SYS [pin 25] - TS [pin 16] - VAC1 [pin 9] - VAC2 [pin 8] - VBUS [pin 3] - VBUS [pin 2] ### U3 — [LMR33630BDDAR](https://www.flux.ai/lcsc/lmr33630bddar~o51d.md) - Role: Voltage Regulator - Role Details: 3.3V rail, sized for ESP32-C3 ~500mA peaks plus sensor margin - Manufacturer Name: TI(德州仪器) - JLCPCB Part Class: Extended Part - Part Type: DC-DC Converters - Package or Case Code: SOIC-8_L4.9-W3.9-P1.27-LS6.0-BL-EP2.8-1 - LCSC Part Number: C544370 - Manufacturer Part Number: LMR33630BDDAR - Datasheet URL: https://www.ti.com/lit/ds/symlink/lmr33630.pdf **Pins:** - BOOT [pin 7] - EN [pin 3] - EP [pin 9] - FB [pin 5] - PG [pin 4] - PGND [pin 1] - SW [pin 8] - VCC [pin 6] - VIN [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/kopernikus/solar-esp32-lampensteuerung~76](https://www.flux.ai/kopernikus/solar-esp32-lampensteuerung~76).* --- *Generated from [https://www.flux.ai/kopernikus/solar-esp32-lampensteuerung~76](https://www.flux.ai/kopernikus/solar-esp32-lampensteuerung~76)*