# LoRa Leak Sensor Reference Design 7K6y 9Hn3 dpsa qYJE ## Description This project is a LoRa-based leak sensor reference design. It incorporates an STM32 MCU and a RFM95W LoRa module #LoRa #STM32 #ARM #referenceDesign #simple-embedded #raspberrypi #template #reference-design ## Project Details - **Owner:** fetiadar - **Created:** 4/9/2025 - **Last Updated:** 4/9/2025 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ ## Key Components ### BATT1 — [1070TR](https://www.flux.ai/jharwinbarrozo/1070tr~eit.md) - Manufacturer Name: Keystone Electronics - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p5.pdf - Voltage: 3V - Manufacturer Part Number: 1070TR **Pins:** - - - + ### J1 — [B2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/jecstronic/b2b-ph-sm4-tblfsn~84.md) - Manufacturer Part Number: JST Sales America Inc. - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: JST Sales America Inc. - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] ### J2 — [ARM JTAG SWD 10Pin 0.05" Connector](https://www.flux.ai/vasy_skral/arm-jtag-swd-10pin-005-connector~y0b.md) - Manufacturer Part Number: FTSH-105-01-L-DV-007-K - Part Type: Connector - Manufacturer Name: Analog Devices - Datasheet URL: https://suddendocs.samtec.com/catalog_english/ftsh_smt.pdf **Pins:** - ~RESET~ [pin 10] - GND [pin 5] - GND [pin 3] - GNDDetect [pin 9] - NC/TDI [pin 8] - SWDCLK/TCK [pin 4] - SWDIO/TMS [pin 2] - SWO/TDO [pin 6] - VTref [pin 1] ### J3 — [S4B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/jecstronic/s4b-ph-sm4-tblfsn~7fb.md) - Part Type: Connector - Manufacturer Part Number: S4B-PH-SM4-TB(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: JST Sales America Inc. **Pins:** - PIN_1 [pin 1] - PIN_2 [pin 2] - PIN_3 [pin 3] - PIN_4 [pin 4] ### J4 — [SMD SMA](https://www.flux.ai/vasyl/smd-sma~cv1.md) - Part Type: Integrated Circuit **Pins:** - ~ [pin 2] - ~ [pin 1] ### LED1 — [LTST-C19HE1WT](https://www.flux.ai/vasy_skral/ltst-c19he1wt~x5i.md) - Datasheet URL: https://datasheet.lcsc.com/lcsc/2010222107_Everlight-Elec-19-237-R6GHBHC-A04-2T_C883183.pdf - Part Type: LED - Manufacturer Name: Everlight Elec - Manufacturer Part Number: 19-237/R6GHBHC-A04/2T **Pins:** - A - B - G - R ### U1 — [STM32L031G6U6S](https://www.flux.ai/vasyl/stm32l031g6u6s~zrh.md) - Part Type: Microcontroller - Manufacturer Part Number: STM32L031G6U6S - Manufacturer Name: STMicroelectronics - Datasheet URL: https://www.st.com/resource/en/datasheet/stm32l031c6.pdf **Pins:** - BOOT0 [pin 1] - NRST [pin 4] - P14 [pin 22] - PA0 [pin 6] - PA1 [pin 7] - PA10 [pin 20] - PA13 [pin 21] - PA14 [pin 23] - PA2 [pin 8] - PA3 [pin 9] - PA4 [pin 10] - PA5 [pin 11] - PA6 [pin 12] - PA7 [pin 13] - PA8 [pin 18] - PA9 [pin 19] - PB0 [pin 14] - PB1 [pin 15] - PB3 [pin 24] - PB4 [pin 25] - PB5 [pin 26] - PB6 [pin 27] - PB7 [pin 28] - PC14 [pin 2] - PC15 [pin 3] - VDD [pin 17] - VDDA [pin 5] - VSS [pin 16] ### U2 — [RFM95W-915S2](https://www.flux.ai/vasyl/rfm95w-915s2~5r.md) - Manufacturer Name: Hoperf letrnc - Part Type: RF module - Manufacturer Part Number: RFM95W-915S2 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://cdn.sparkfun.com/assets/learn_tutorials/8/0/4/RFM95_96_97_98W.pdf **Pins:** - 3.3V [pin 13] - ANT [pin 9] - DIO0 [pin 14] - DIO1 [pin 15] - DIO2 [pin 16] - DIO3 [pin 11] - DIO4 [pin 12] - DIO5 [pin 7] - GND [pin 8] - GND [pin 10] - GND [pin 1] - MISO [pin 2] - MOSI [pin 3] - NSS [pin 5] - RESET [pin 6] - SCK [pin 4] ### U3 — [ESP32-WROOM-32D](https://www.flux.ai/vasyl/esp32-wroom-32d~7py.md) - Manufacturer Part Number: ESP32-WROOM-32D - Manufacturer Name: Espressif Systems - Datasheet URL: https://www.espressif.com/sites/default/files/documentation/esp32-wroom-32d_esp32-wroom-32u_datasheet_en.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Microcontroller **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] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/fetiadar/lora-leak-sensor-reference-design-7k6y-9hn3-dpsa-qyje~s1](https://www.flux.ai/fetiadar/lora-leak-sensor-reference-design-7k6y-9hn3-dpsa-qyje~s1).* --- *Generated from [https://www.flux.ai/fetiadar/lora-leak-sensor-reference-design-7k6y-9hn3-dpsa-qyje~s1](https://www.flux.ai/fetiadar/lora-leak-sensor-reference-design-7k6y-9hn3-dpsa-qyje~s1)*