# LoRa Door and Window Sensor Reference Design ## Description This is a LoRa-based door and window sensor incorporating a microcontroller unit (MCU). It features a reed sensor, LED indicators, a AAA non-rechargeable battery, and a booster IC for constant voltage. The MCU is linked to peripherals through nets, ensuring optimal performance #LoRa #MCU #ReferenceDesign #project #referenceDesign #simple-embedded #seeed #seeed-studio #template #reference-design #polygon ## Project Details - **Owner:** vasy_skral - **Created:** 12/6/2023 - **Last Updated:** 3/4/2026 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 7 ## Key Components ### BAT1 — [Battery Holder Keystone 1076 1xAAA](https://www.flux.ai/vasy_skral/battery-holder-keystone-1076-1xaaa.md) - Datasheet URL: https://www.keyelco.com/userAssets/file/M65p24.pdf - Manufacturer Part Number: 1076 - Manufacturer Name: Keystone Electronics - Part Type: Connector **Pins:** - NEGATIVE [pin -] - POSITIVE [pin +] ### BOOT — [PTS815](https://www.flux.ai/vasy_skral/pts815.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] ### EN — [PTS815](https://www.flux.ai/vasy_skral/pts815.md) - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Part Type: Switch - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### IC1 — [TPS613221ADBVR](https://www.flux.ai/vasyl/tps613221adbvr.md) - Datasheet URL: https://www.ti.com/general/docs/suppproductinfo.tsp?distId=10&gotoUrl=http%253A%252F%252Fwww.ti.com%252Flit%252Fgpn%252Ftps61322 - Manufacturer Part Number: TPS613221ADBVR - Manufacturer Name: Texas Instruments - 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.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 ### PROG — [Pin Header 01x06 2.54mm Vertical](https://www.flux.ai/vasy_skral/pin-header-01x06-254mm-vertical.md) - Part Type: Connector - License: https://creativecommons.org/licenses/by/4.0/ **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] ### REED1 — [MDSM-4R-12-18](https://www.flux.ai/vasy_skral/mdsm-4r-12-18.md) - Part Type: Switch - Manufacturer Name: Littelfuse Inc. - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: https://www.littelfuse.com/media?resourcetype=datasheets&itemid=a42b08e0-1fdf-4815-8489-0dbae6f9e547&filename=littelfuse-reed-switches-mdsm-4-datasheet - Manufacturer Part Number: MDSM-4R-12-18 **Pins:** - ~ [pin 2] - ~ [pin 1] ### U1 — [LoRa-E5 (STM32WLE5JC)](https://www.flux.ai/vasyl/lora-e5-stm32wle5jc.md) - Datasheet URL: https://files.seeedstudio.com/products/317990687/res/LoRa-E5%20module%20datasheet_V1.0.pdf - Manufacturer Part Number: 317990687 - Part Type: RF Transceiver Module - Manufacturer Name: Seeed Technology Co., Ltd **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.md) - Datasheet URL: https://www.ckswitches.com/media/2728/pts815.pdf - Manufacturer Part Number: PTS815 SJM 250 SMTR LFS - Part Type: Switch - Manufacturer Name: C&K **Pins:** - ~1 [pin 1] - ~2 [pin 2] - ~3 [pin 3] - ~4 [pin 4] ### Y1 — [0900AT43A0070E](https://www.flux.ai/jecstronic/0900at43a0070e.md) - Manufacturer Name: Johanson Technology - Part Type: Antenna - Datasheet URL: https://www.mouser.com/datasheet/2/611/0900AT43A0070-1519105.pdf - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: 0900AT43A0070E **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-door-and-window-sensor-reference-design](https://www.flux.ai/vasy_skral/lora-door-and-window-sensor-reference-design).* --- *Generated from [https://www.flux.ai/vasy_skral/lora-door-and-window-sensor-reference-design](https://www.flux.ai/vasy_skral/lora-door-and-window-sensor-reference-design)*