HW LoRaNode
About the HW LoRaNode PCB
HW LoRaNode is an open source STM32 PCB design by KunYi, published on GitHub under the Apache-2.0 license. It is a 4-layer board measuring 60 × 30 mm, with 33 components from 19 distinct parts.
Its main chip is the STM32L071CBTx, from the STM32 family. Other key parts include the E22-900M22S and MAX3483. By type, the board carries 12 capacitors, 9 resistors, 7 connectors, 3 ICs and 2 crystals.
It belongs with the sensors designs in this gallery.
From the project
My agritech project for public
Agritech with LoRa === the project want to make an agritech sensor baseboard.
initial version will use RS485 to connection multi-agricultural sensors for precision agriculture management requirments
Main components on the HW LoRaNode
HW LoRaNode bill of materials (BOM)
33 components, 19 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | STM32L071CBTx | LQFP-48_7x7mm_P0.5mm | U1 |
| 1 | E22-900M22S | EBYTE-E22-XXXM22S | U2 |
| 1 | MAX3483 | SO-8_3.9x4.9mm_P1.27mm | U3 |
| 1 | 8MHz | Crystal_SMD_TXC_7M-4Pin_3.2x2.5mm | X1 |
| 1 | 32.768KHz | Crystal_SMD_3215-2Pin_3.2x1.5mm | X2 |
| 1 | UART | PinSocket_1x03_P2.00mm_Vertical | J1 |
| 1 | I2C | PinSocket_1x04_P2.00mm_Vertical | J2 |
| 1 | SPI | PinSocket_1x06_P2.00mm_Vertical | J3 |
| 1 | 5V_IN | PinSocket_1x02_P2.54mm_Vertical | J4 |
| 1 | BAT_IN | PinSocket_1x02_P2.54mm_Vertical | J5 |
| 1 | SWD | PinHeader_2x05_P1.27mm_Vertical_SMD | J6 |
| 1 | RS485 | PinHeader_1x04_P2.54mm_Vertical | J7 |
| 7 | 100nF | C_0402_1005Metric | C1, C2, C3, C4, C5, C6, C12 |
| 4 | 18pF | C_0402_1005Metric | C7, C8, C9, C10 |
| 1 | 1uF | C_0603_1608Metric | C11 |
| 6 | 0 | R_0402_1005Metric | R1, R2, R3, R5, R7, R8 |
| 1 | 220 | R_0402_1005Metric | R4 |
| 1 | N/A | R_0402_1005Metric | R6 |
| 1 | 120 | R_0603_1608Metric | R9 |
HW LoRaNode design files
The KiCad project lives in the KunYi/HW_LoRaNode repository on GitHub; these links point at the commit this page was built from.
- LayoutHW/LoRaNode.kicad_pcb
HW LoRaNode: common questions
What microcontroller does the HW LoRaNode use?
The HW LoRaNode is built around the STM32L071CBTx, from the STM32 family.
How big is the HW LoRaNode PCB?
The HW LoRaNode measures 60 × 30 mm, has 4 copper layers and is 1.6 mm thick.
How many components are on the HW LoRaNode?
33 components, from 19 distinct parts. The full bill of materials is listed on this page.
Where can I download the HW LoRaNode design files?
From the KunYi/HW_LoRaNode repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the HW LoRaNode design in my own project?
Yes, under the terms of its Apache-2.0 license, which KunYi chose for the repository.
Can I test firmware for the HW LoRaNode 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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