# Standard Bronze Transporter ## Description SX1276 LoRa RF Test Board with USB-C Power, On-board USB-SPI Bridge Control, TCXO Clock, and 915 MHz 50 Ω RF Front-End ## Project Details - **Owner:** gukai330 - **Created:** 1/8/2026 - **Last Updated:** 1/13/2026 - **Visibility:** Public - **Control Method:** On-board USB-SPI Bridge - **board_height:** 832.5 - **maxX:** 2066 - **minY:** 578.5 - **Clock Source:** TCXO - **board_width:** 1441 - **maxY:** 1391 - **Operating Band:** 915MHz - **minX:** 645 ## Key Components ### J1 — [2024100002](https://www.flux.ai/adrian95/2024100002~atk.md) - License: https://creativecommons.org/licenses/by/4.0/ - Manufacturer Name: Molex - Datasheet URL: https://mm.digikey.com/Volume0/opasdata/d220001/medias/docus/834/202410002_Pkg_Spec.pdf - Role Details: USB-C input for power and USB2 data - Manufacturer Part Number: 2024100002 - Role: Connector - Part Type: Connector **Pins:** - CC1 [pin A5] - CC2 [pin B5] - DA- [pin A7] - DA+ [pin A6] - DB- [pin B7] - DB+ [pin B6] - GND1 [pin A1] - GND2 [pin A12] - GND3 [pin B1] - GND4 [pin B12] - RX1- [pin B10] - RX1+ [pin B11] - RX2- [pin A10] - RX2+ [pin A11] - SBU1 [pin A8] - SBU2 [pin B8] - SHIELD1 [pin SH1] - SHIELD2 [pin SH2] - SHIELD3 [pin SH3] - SHIELD4 [pin SH4] - TX1- [pin A3] - TX1+ [pin A2] - TX2- [pin B3] - TX2+ [pin B2] - VBUS1 [pin A4] - VBUS2 [pin A9] - VBUS3 [pin B4] - VBUS4 [pin B9] ### J2 — [142-0701-801](https://www.flux.ai/adrian95/142-0701-801~8ox.md) - Manufacturer Part Number: 142-0701-801 - License: https://creativecommons.org/licenses/by/4.0/ - Datasheet URL: http://www.farnell.com/datasheets/2048966.pdf - Package or Case Code: 142-0701-851 - Role Details: 50Ω SMA antenna connector for RF front-end - Part Type: Connector - Role: Connector - Connector Type: RF / Coaxial Connectors - Package: CONN-SMD - Manufacturer Name: Cinch Connectivity Solutions **Pins:** - 1 [pin 1] - 2 [pin 2] - 3 [pin 3] ### J3 — [2x5 Pin Shrouded Header](https://www.flux.ai/rex-flux/2x5-pin-shrouded-header~tg.md) - Datasheet URL: https://www.we-online.com/catalog/datasheet/61201021621.pdf - Part Type: Connector - Package: HDR-TH_10P-P2.54 - Role Details: Keyed SPI header for SX1276 control - Role: Connector - Manufacturer Name: Würth Elektronik - Manufacturer Part Number: 61201021621 **Pins:** - P1 [pin 1] - P10 [pin 10] - P2 [pin 2] - P3 [pin 3] - P4 [pin 4] - P5 [pin 5] - P6 [pin 6] - P7 [pin 8] - P7 [pin 7] - P9 [pin 9] ### J4 — [68786-202LF](https://www.flux.ai/adrian95/68786-202lf~c2w.md) - Manufacturer Part Number: 68786-202LF - Part Type: Connector - Manufacturer Name: Amphenol ICC (FCI) - Datasheet URL: https://cdn.amphenol-cs.com/media/wysiwyg/files/drawing/68786.pdf - Role: Connector - License: https://creativecommons.org/licenses/by/4.0/ - Role Details: GPIO jumper shunt for SX1276 GPIO pin block - Package: CONN-TH **Pins:** - 1 [pin 1] - 2 [pin 2] ### U1 — [NCP176BMX330TCG](https://www.flux.ai/ryanf/ncp176bmx330tcg~l72.md) - Package or Case Code: XDFN6 - Datasheet URL: https://www.mouser.com/datasheet/2/308/1/NCP176_D-2316728.pdf - Part Type: Linear Voltage Regulator - Role: Power Management - Manufacturer Part Number: NCP176BMX330TCG - Role Details: 3.3 V LDO regulator for board power rail - Max Input Voltage: 6.5V - Manufacturer Name: onsemi **Pins:** - EN [pin 4] - FB [pin 2] - GND [pin 3] - IN [pin 6] - N/C [pin 5] - OUT [pin 1] ### U2 — [SX1276IMLTRT](https://www.flux.ai/vasy_skral/sx1276imltrt~lz.md) - Role Details: Semtech SX1276 LoRa transceiver - Role: RF Transceiver - Datasheet URL: https://semtech.my.salesforce.com/sfc/p/E0000000JelG/a/2R0000001OKs/Bs97dmPXeatnbdoJNVMIDaKDlQz8q1N_gxDcgqi7g2o - Operating Voltage: 3.3V - Part Type: RF - Manufacturer Name: Semtech Corporation - Manufacturer Part Number: SX1276IMLTRT **Pins:** - ~RESET [pin 7] - DIO0 [pin 8] - DIO1 [pin 9] - DIO2 [pin 10] - DIO3 [pin 11] - DIO4 [pin 12] - DIO5 [pin 13] - GND [pin 23] - GND [pin 29] - GND [pin 15] - GND [pin 26] - MISO [pin 17] - MOSI [pin 18] - NSS [pin 19] - PA_BOOST [pin 27] - RFI_HF [pin 21] - RFI_LF [pin 1] - RFO_HF [pin 22] - RFO_LF [pin 28] - RXTX/RF_MOD [pin 20] - SCK [pin 16] - VBAT_ANA [pin 3] - VBAT_DIG [pin 14] - VBAT_RF [pin 24] - VR_ANA [pin 2] - VR_DIG [pin 4] - VR_PA [pin 25] - XTA [pin 5] - XTB [pin 6] ### U3 — [FT232HL-REEL](https://www.flux.ai/vasyl/ft232hl-reel~ww.md) - Datasheet URL: https://www.ftdichip.com/Support/Documents/DataSheets/ICs/DS_FT232H.pdf - Role: Interface - Part Type: Integrated Circuit - Manufacturer Name: FTDI, Future Technology Devices International Ltd - Role Details: USB-SPI bridge via MPSSE for SX1276 control - Manufacturer Part Number: FT232HL-REEL - Operating Voltage: 5V - Max Input Voltage: 5.25V **Pins:** - ~RESET [pin 34] - ACBUS0 [pin 21] - ACBUS1 [pin 25] - ACBUS2 [pin 26] - ACBUS3 [pin 27] - ACBUS4 [pin 28] - ACBUS5 [pin 29] - ACBUS6 [pin 30] - ACBUS7 [pin 31] - ACBUS8 [pin 32] - ACBUS9 [pin 33] - ADBUS0 [pin 13] - ADBUS1 [pin 14] - ADBUS2 [pin 15] - ADBUS3 [pin 16] - ADBUS4 [pin 17] - ADBUS5 [pin 18] - ADBUS6 [pin 19] - ADBUS7 [pin 20] - AGND [pin 4] - AGND [pin 41] - AGND [pin 9] - DM [pin 6] - DP [pin 7] - EECLK [pin 44] - EECS [pin 45] - EEDATA [pin 43] - GND [pin 47] - GND [pin 36] - GND [pin 22] - GND [pin 48] - GND [pin 23] - GND [pin 35] - GND [pin 10] - GND [pin 11] - REF [pin 5] - TEST [pin 42] - VCCA [pin 37] - VCCCORE [pin 38] - VCCD [pin 39] - VCCIO [pin 46] - VCCIO [pin 12] - VCCIO [pin 24] - VPHY [pin 3] - VPLL [pin 8] - VREGIN [pin 40] - XCSI [pin 1] - XCSO [pin 2] ### U4 — [AS179-92LF](https://www.flux.ai/kicad-part-library/as179-92lf~65.md) - Manufacturer Part Number: AS179-92LF - Role Details: T/R RF switch for SX1276 TX/RX path at 915 MHz - Role: Switch - Manufacturer Name: Skyworks Solutions, Inc. - Datasheet URL: http://www.skyworksinc.com/uploads/documents/AS179_92LF_200176H.pdf - Package: SC-70 - Package or Case Code: SOT-363_SC-70-6 - Operating Voltage: 3.3V **Pins:** - GND [pin 2] - J1 [pin 5] - J2 [pin 3] - J3 [pin 1] - V1 [pin 4] - V2 [pin 6] ### X2 — [NX1612SA-32MHZ-STD-CIS-3](https://www.flux.ai/lcsc/nx1612sa-32mhz-std-cis-3~ja2s.md) - Package or Case Code: CRYSTAL-SMD_4P-L1.6-W1.2-BL - Manufacturer Name: NDK - Part Type: Crystals - LCSC Part Number: C910049 - Manufacturer Part Number: NX1612SA-32MHZ-STD-CIS-3 - Role: Oscillator - Role Details: 32 MHz crystal for SX1276 external clock input - JLCPCB Part Class: Extended Part **Pins:** - 1 [pin 1] - 3 [pin 3] - GND [pin 4] - GND [pin 2] ### Y1 — [DSB321SDN 38.4MHz 2.8V 0.5PPM](https://www.flux.ai/lcsc/dsb321sdn-38p4mhz-2p8v-0p5ppm~y3i.md) - Part Type: Temperature Compensated Crystal Oscillators (TCXOs) - Manufacturer Name: KDS(大真空) - Datasheet URL: https://storage.googleapis.com/graviton-electric-symbols/document_assets/lcsc/1810301228_KDS-Daishinku-DSB321SDN-38-4MHz-2-8V-0-5PPM_C216351.pdf - Package or Case Code: OSC-SMD_4P-L3.2-W2.5-BL_1XTV - LCSC Part Number: C216351 - Role: Oscillator - Product Info Url: https://lcsc.com/product-detail/SMD-Oscillators-XO_KDS-Daishinku__KDS-Daishinku-KDS-DSB321SDN-38-4MHz-2-8V-0-5PPM_C216351.html - Manufacturer Part Number: DSB321SDN 38.4MHz 2.8V 0.5PPM - JLCPCB Part Class: Extended Part - Role Details: TCXO footprint option for 32 MHz clock **Pins:** - GND [pin 1] - GND [pin 2] - OUT [pin 3] - VCC [pin 4] *The full schematic, PCB layout, bill of materials, and interactive design are available at [https://www.flux.ai/gukai330/standard-bronze-transporter~hz](https://www.flux.ai/gukai330/standard-bronze-transporter~hz).* --- *Generated from [https://www.flux.ai/gukai330/standard-bronze-transporter~hz](https://www.flux.ai/gukai330/standard-bronze-transporter~hz)*