LoRA board
About the LoRA board
LoRA board is an open source STM32 PCB design by SCFormulaElectric, published on GitHub. It is a 4-layer board measuring 61.2 × 38.9 mm, with 52 components from 47 distinct parts.
Its main chip is the BQ79616PAPRQ1, from the STM32 family. Other key parts include the TPS563300, SN65HVD230DR and STM32F405RGTX. By type, the board carries 19 capacitors, 13 resistors, 6 connectors, 4 ICs, 4 diodes and 2 inductors.
It belongs with the rf & radio designs in this gallery.
From the project
- Update README.md file in each directory with the appropriate changes made - On schematics, please use boxes to section of parts of the circuit and use text boxes to describe functionality
Main components on the LoRA board
LoRA board bill of materials (BOM)
52 components, 47 distinct parts — part numbers from the project's BOM.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | BQ79616PAPRQ1 STM32F042F4P6 | TSSOP-20_L6.5-W4.4-P0.65-LS6.4-BL | U1 |
| 1 | TPS563300 SN65HVD230DR | SOIC-8_3.9x4.9mm_P1.27mm | U2 |
| 1 | SN65HVD230DR TPSM863252RDXR | QFN-7_L4.0-W3.3_TPSM863257RDXR | U5 |
| 1 | STM32F405RGTX AMS1117-3.3 | SOT-223-3_TabPin2 | U6 |
| 1 | ZXTN4004KTC AO3401A | SOT-23 | Q1 |
| 1 | X50328MSB2GI Yangxing Tech | CRYSTAL-SMD_L5.0-W3.2 | X1 |
| 1 | 43650-0400 | Molex_Micro-Fit_3.0_43650-0400_1x04_P3.00mm_Horizontal | J3 |
| 1 | Conn_01x04_Pin | PinHeader_1x04_P2.54mm_Vertical | J4 |
| 1 | Conn_01x03_Pin | PinHeader_1x03_P2.54mm_Vertical | J6 |
| 3 | Conn_01x02_Pin | PinHeader_1x02_P2.54mm_Vertical | J7, J8, J9 |
| 1 | SMD0805-010-24V BSMD0603-020-16V | F0603 | F1 |
| 1 | C720477 Tactile Button, 160gf XUNPU | SW_TS-1088-AR02016 | S1 |
| 1 | SM91502ALE Green Hubei KENTO Elec | D_0805 | D1 |
| 1 | C15771 Red Foshan NationStar Optoelectronics | D_0805 | D3 |
| 1 | C15771 ESD2CANFD24DBZRQ1 | SOT-23-3_L2.9-W1.3-P1.90-LS2.3-BR | D4 |
| 1 | C2286 BZT52C10S hongjiacheng | D_SOD-323 | D6 |
| 1 | ACT45B-101-2P-TL003 GZ1608D601TF | L0603 | L1 |
| 1 | ACT1210-101-2P-TL00 | FILTER-SMD_4P-L3.9-W2.5-BL | L3 |
| 1 | 4.7UF 10uF Samsung Electro-Mechanics | C_0603 | C1 |
| 1 | 1UF 100nF YAGEO | C_0603 | C2 |
Show 27 more
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | 100NF 4.7uF Samsung Electro-Mechanics | C_0603 | C3 |
| 1 | 1UF 10nF FH(Guangdong Fenghua Advanced Tech) | C_0603 | C4 |
| 1 | 1UF 1uF Samsung Electro-Mechanics | C_0603 | C5 |
| 1 | 100NF 100nF YAGEO | C_0603 | C6 |
| 1 | 2.2UF 10uF Murata Electronics | C_0805 | C7 |
| 1 | 470NF 100nF YAGEO | C_0603 | C8 |
| 1 | 20PF 20pF Samsung Electro-Mechanics | C_0603 | C9 |
| 1 | 10UF 20pF Samsung Electro-Mechanics | C_0603 | C10 |
| 1 | 4.7NF 100nF YAGEO | C_0603 | C11 |
| 1 | 100NF 22uF Samsung Electro-Mechanics | C_1206 | C12 |
| 1 | 10uF Murata Electronics | C_0805 | C14 |
| 1 | TLJB227M006R0500 | CASE-B_3528 | C15 |
| 1 | 100nF YAGEO | C_0603 | C17 |
| 1 | 470NF 4.7nF FH(Guangdong Fenghua Advanced Tech) | C_0603 | C18 |
| 1 | 10nF FH(Guangdong Fenghua Advanced Tech) | C_0603 | C20 |
| 1 | 470NF 22pF Samsung Electro-Mechanics | C_0603 | C21 |
| 1 | 470NF 22uF Samsung Electro-Mechanics | C_0805 | C22 |
| 2 | 820Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R1, R2 |
| 1 | 13kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R3 |
| 1 | 0603WAF604JT5E 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R5 |
| 2 | 0603WAF604JT5E | R0603 | R6, R7 |
| 1 | 0Ω UNI-ROYAL(Uniroyal Elec) | R_0603 | R9 |
| 2 | 0Ω UNI-ROYAL(Uniroyal Elec) | R_0402 | R11, R12 |
| 1 | 68kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R13 |
| 1 | 10kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R14 |
| 1 | 220kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R16 |
| 1 | 30kΩ UNI-ROYAL(Uniroyal Elec) | R_0603 | R18 |
LoRA board design files
The KiCad project lives in the SCFormulaElectric/USC-Electrical-Systems repository on GitHub; these links point at the commit this page was built from.
LoRA board: common questions
What microcontroller does the LoRA board use?
The LoRA board is built around the BQ79616PAPRQ1, from the STM32 family.
How big is the LoRA board?
The LoRA board measures 61.2 × 38.9 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the LoRA board?
52 components, from 47 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.
Where can I download the LoRA board design files?
From the SCFormulaElectric/USC-Electrical-Systems repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.
Can I use the LoRA board design in my own project?
The repository has no license, so all rights stay with SCFormulaElectric. Use it as a reference, and ask the author before reusing the design.
Can I test firmware for the LoRA board without the hardware?
Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.
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