# LoRa temperature sensor Reference Design rN9r ## Description This project is a LoRa temperature sensor. It uses the RP2040 microcontroller and a SHT31 temperature sensor and also RFM95 for LoRa communication #LoRa #referenceDesign #simple-embedded #raspberrypi #template #reference-design ## Project Details - **Owner:** eneskilic - **Created:** 9/25/2024 - **Last Updated:** 9/25/2024 - **Visibility:** Public - **License:** https://creativecommons.org/licenses/by/4.0/ - **Copies:** 1 ## Key Components ### J1 — [TYPE-C-31-M-12](https://www.flux.ai/vasy_skral/type-c-31-m-12.md) - Part Type: Connector - Datasheet URL: https://datasheet.lcsc.com/lcsc/2205251630_Korean-Hroparts-Elec-TYPE-C-31-M-12_C165948.pdf - Manufacturer Name: Korean Hroparts Elec - Manufacturer Part Number: TYPE-C-31-M-12 **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DN1 [pin A7] - DN2 [pin B7] - DP1 [pin A6] - DP2 [pin B6] - GND [pin B1A12] - GND [pin A1B12] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD [pin S3] - SHIELD [pin S1] - SHIELD [pin S4] - SHIELD [pin S2] - VBUS [pin A4B9] - VBUS [pin B4A9] ### J2 — [SMD SMA](https://www.flux.ai/vasyl/smd-sma.md) - Part Type: Integrated Circuit **Pins:** - ~ [pin 2] - ~ [pin 1] ### J3 — [S2B-PH-SM4-TB(LF)(SN)](https://www.flux.ai/vasyl/s2b-ph-sm4-tblfsn.md) - Manufacturer Part Number: S2B-PH-SM4-TB(LF)(SN) - Datasheet URL: https://www.jst-mfg.com/product/pdf/eng/ePH.pdf - Part Type: Connector - Manufacturer Name: JST Sales America Inc. **Pins:** - 1 [pin 1] - 2 [pin 2] - SHIELD [pin S1] - SHIELD__1 [pin S2] ### LED1 — [LED-0402-Template](https://www.flux.ai/vasy_skral/led-0402-template.md) - Part Type: LED - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - A [pin 2] - K [pin 1] ### LED2 — [LED-0402-Template](https://www.flux.ai/vasy_skral/led-0402-template.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: LED **Pins:** - A [pin 2] - K [pin 1] ### NTC1 — [NTC Thermistor 0603 Template](https://www.flux.ai/vasy_skral/ntc-thermistor-0603-template.md) - Resistance: 10kΩ - Part Type: Sensor - License: https://creativecommons.org/licenses/by/4.0/ **Pins:** - P1 [pin 1] - P2 [pin 2] ### U1 — [SHT31-DIS-B2.5KS](https://www.flux.ai/vasyl/sht31-dis-b25ks.md) - Datasheet URL: https://media.digikey.com/pdf/Data%20Sheets/Sensirion%20PDFs/HT_DS_SHT3x_DIS.pdf - Manufacturer Name: Sensirion AG - Manufacturer Part Number: SHT31-DIS-B2.5KS - Part Type: Integrated Circuit **Pins:** - ~RESET [pin 6] - ADDR [pin 2] - ALERT [pin 3] - R [pin 7] - SCL [pin 4] - SDA [pin 1] - VDD [pin 5] - VSS [pin 9] - VSS [pin 8] ### U2 — [RP2040](https://www.flux.ai/vasy_skral/rp2040.md) - Datasheet URL: https://datasheets.raspberrypi.com/rp2040/rp2040-datasheet.pdf - Part Type: Microcontroller - Manufacturer Name: Raspberry Pi - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: RP2040 **Pins:** - ADC_AVDD [pin 43] - DVDD [pin 23] - DVDD [pin 50] - GND [pin 57] - GPIO0 [pin 2] - GPIO1 [pin 3] - GPIO10 [pin 13] - GPIO11 [pin 14] - GPIO12 [pin 15] - GPIO13 [pin 16] - GPIO14 [pin 17] - GPIO15 [pin 18] - GPIO16 [pin 27] - GPIO17 [pin 28] - GPIO18 [pin 29] - GPIO19 [pin 30] - GPIO2 [pin 4] - GPIO20 [pin 31] - GPIO21 [pin 32] - GPIO22 [pin 34] - GPIO23 [pin 35] - GPIO24 [pin 36] - GPIO25 [pin 37] - GPIO26/ADC0 [pin 38] - GPIO27/ADC1 [pin 39] - GPIO28/ADC2 [pin 40] - GPIO29/ADC3 [pin 41] - GPIO3 [pin 5] - GPIO4 [pin 6] - GPIO5 [pin 7] - GPIO6 [pin 8] - GPIO7 [pin 9] - GPIO8 [pin 11] - GPIO9 [pin 12] - IOVDD [pin 33] - IOVDD [pin 22] - IOVDD [pin 10] - IOVDD [pin 49] - IOVDD [pin 1] - IOVDD [pin 42] - QSPI_CSN [pin 56] - QSPI_SCLK [pin 52] - QSPI_SD0 [pin 53] - QSPI_SD1 [pin 55] - QSPI_SD2 [pin 54] - QSPI_SD3 [pin 51] - RUN [pin 26] - SWCLK [pin 24] - SWD [pin 25] - TESTEN [pin 19] - USB_DM [pin 46] - USB_DP [pin 47] - USB_VDD [pin 48] - VREG_VIN [pin 44] - VREG_VOUT [pin 45] - XIN [pin 20] - XOUT [pin 21] ### U3 — [RFM95W-868S2](https://www.flux.ai/vasyl/rfm95w-868s2.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: RFM95W-868S2 - Part Type: RF module - Manufacturer Name: Hoperf letrnc - 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 1] - GND [pin 8] - GND [pin 10] - MISO [pin 2] - MOSI [pin 3] - NSS [pin 5] - RESET [pin 6] - SCK [pin 4] ### U4 — [AP2112K-3.3TRG1](https://www.flux.ai/adrian95/ap2112k-33trg1.md) - License: https://creativecommons.org/licenses/by/4.0/ - Part Type: Integrated Circuit - Manufacturer Name: https://www.diodes.com/assets/Datasheets/AP2112.pdf - Manufacturer Part Number: AP2112K-3.3TRG1 - Datasheet URL: Diodes Incorporated **Pins:** - EN [pin 3] - GND [pin 2] - NC [pin 4] - VIN [pin 1] - VOUT [pin 5] ### U5 — [ISL6292-2CR3Z](https://www.flux.ai/vasy_skral/isl6292-2cr3z.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Part Number: ISL6292-2CR3Z - Part Type: Integrated Circuit - Datasheet URL: https://www.renesas.com/us/en/document/dst/isl6292-datasheet - Manufacturer Name: Renesas Electronics America Inc **Pins:** - *FAULT [pin 2] - *STATUS [pin 3] - EN [pin 6] - EPAD [pin 11] - GND [pin 5] - IREF [pin 8] - TEMP [pin 9] - TIME [pin 4] - V2P8 [pin 7] - VBAT [pin 10] - VIN [pin 1] ### X1 — [Crystal-oscillator-4P-ABM3C](https://www.flux.ai/vasy_skral/crystal-oscillator-4p-abm3c.md) - Part Type: Oscillator - Manufacturer Part Number: ABM3C-12.000MHZ-D4Y-T - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Abracon LLC - Frequency: 12MHz - Datasheet URL: https://abracon.com/Resonators/ABM3C.pdf **Pins:** - GND [pin 2] - GND [pin 4] - IN/OUT [pin 1] - OUT/IN [pin 3] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/eneskilic/lora-temperature-sensor-reference-design-rn9r](https://www.flux.ai/eneskilic/lora-temperature-sensor-reference-design-rn9r).* --- *Generated from [https://www.flux.ai/eneskilic/lora-temperature-sensor-reference-design-rn9r](https://www.flux.ai/eneskilic/lora-temperature-sensor-reference-design-rn9r)*