# LoRa Gas leakage detector Reference Design ## Description This is a LoRa based gas leakage detector design featuring a BME680 gas sensor by Bosch Sensortec. It includes a Seeed LoRa module for RF communication and uses an MCU. The power is driven by two non-rechargeable AA batteries with voltage regulation by TPS613221ADBVR IC. The project also incorporates user interaction components such as indicators (LED) and switches. #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design #polygon ## Project Details - **Owner:** vasy_skral - **Created:** 12/11/2023 - **Last Updated:** 3/4/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 8 ## Key Components ### BAT1 — [BC2AAPC](https://www.flux.ai/vasy_skral/bc2aapc~866.md) - Manufacturer Name: MPD (Memory Protection Devices) - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/1086/BC2AAPC.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector - Manufacturer Part Number: BC2AAPC **Pins:** - - [pin 2] - + [pin 1] ### IC1 — [BME680](https://www.flux.ai/vasyl/bme680~s5p.md) - Datasheet URL: https://www.bosch-sensortec.com/media/boschsensortec/downloads/datasheets/bst-bme680-ds001.pdf - Manufacturer Part Number: BME680 - Part Type: Specialized Sensors - Manufacturer Name: Bosch Sensortec **Pins:** - CSB [pin 2] - GND [pin 1] - GND [pin 7] - SCK [pin 4] - SDI [pin 3] - SDO [pin 5] - VDD [pin 8] - VDDIO [pin 6] ### IC2 — [TPS613221ADBVR](https://www.flux.ai/vasyl/tps613221adbvr~58b.md) - Manufacturer Part Number: TPS613221ADBVR - Manufacturer Name: Texas Instruments - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps61322 - Part Type: Integrated Circuit **Pins:** - GND [pin 2] - NC [pin 3] - NC [pin 5] - SW [pin 1] - VOUT [pin 4] ### LED1 — [LTST-C19HE1WT](https://www.flux.ai/vasy_skral/ltst-c19he1wt~x5i.md) - Manufacturer Name: Everlight Elec - Datasheet URL: https://datasheet.lcsc.com/lcsc/2010222107_Everlight-Elec-19-237-R6GHBHC-A04-2T_C883183.pdf - Manufacturer Part Number: 19-237/R6GHBHC-A04/2T - Part Type: LED **Pins:** - A - B - G - R ### PROG — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical~jyw.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Connector **Pins:** - Pin_1 [pin 1] - Pin_2 [pin 2] - Pin_3 [pin 3] - Pin_4 [pin 4] - Pin_5 [pin 5] - Pin_6 [pin 6] ### RST — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Name: C&K - Part Type: Switch **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### U1 — [LoRa-E5 (STM32WLE5JC)](https://www.flux.ai/vasyl/lora-e5-stm32wle5jc~wpx.md) - Manufacturer Part Number: 317990687 - Manufacturer Name: Seeed Technology Co., Ltd - Datasheet URL: https://files.seeedstudio.com/products/317990687/res/LoRa-E5%20module%20datasheet_V1.0.pdf - Part Type: RF Transceiver Module **Pins:** - GND [pin 2] - GND [pin 14] - GND [pin 16] - GND [pin 22] - PA0 [pin 23] - PA10 [pin 27] - PA13 [pin 3] - PA14 [pin 4] - PA15 [pin 6] - PA2 [pin 19] - PA3 [pin 18] - PA9 [pin 21] - PB0 [pin 28] - PB10 [pin 20] - PB13 [pin 24] - PB14 [pin 26] - PB15 [pin 5] - PB3 [pin 8] - PB4 [pin 7] - PB5 [pin 11] - PB6 [pin 10] - PB7 [pin 9] - PB9 [pin 25] - PC0 [pin 13] - PC1 [pin 12] - RFIO [pin 15] - RST [pin 17] - VCC [pin 1] ### USER — [PTS815](https://www.flux.ai/vasy_skral/pts815~6b.md) - Part Type: Switch - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Name: C&K - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### Y1 — [0900AT43A0070E](https://www.flux.ai/jecstronic/0900at43a0070e~og.md) - Part Type: Antenna - Manufacturer Part Number: 0900AT43A0070E - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.mouser.com/datasheet/2/611/0900AT43A0070-1519105.pdf - Manufacturer Name: Johanson Technology **Pins:** - FEED [pin 1] - NC [pin 2] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/vasy_skral/lora-gas-leakage-detector-reference-design~ppw](https://www.flux.ai/vasy_skral/lora-gas-leakage-detector-reference-design~ppw).* --- *Generated from [https://www.flux.ai/vasy_skral/lora-gas-leakage-detector-reference-design~ppw](https://www.flux.ai/vasy_skral/lora-gas-leakage-detector-reference-design~ppw)*