2 layers72 × 27 mm
2 layers45 × 53 mm
LoRa Node
cernohorsky/LoRa-Node66Simple LoRa Node based on Arduino Pro mini with RFM95W module and PCB antenna.
- Size
- 45 × 53 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 35
- Nets
- 32
- Pads
- 124
- Tracks, vias
- 495, 157
- Pours
- 5
- Routed
- Yes
- KiCad
- KiCad 5 (file 20171130)
- Created
- 15 Mar 2019
- Updated
- 3 Jun 2019
Overview
LoRa Node is an open-source printed circuit board by cernohorsky, from the cernohorsky/LoRa-Node repository on GitHub. It is a 2-layer board of 45 × 53 mm with 35 parts on 32 nets, routed with 495 tracks and 157 vias.
It is built around the ATMEGA328P-AU and RFM95W-868S2. Its parts include 12 capacitors, 8 connectors, 7 resistors, 2 ICs and 1 diode. It belongs with the radio and wireless boards and the AVR (ATmega, ATtiny) boards of this library.
Main components
2README
README.mdLoRa Node
Simple, cheap, very small size Lora node with PCB antenna on 868 MHz. Compatible with FT232RL FTDI USB To TTL Serial Converter. Design includes lot of free GPIO's, push button and LED.
It's necessary to burn bootloader with ISP before RFM95W module is soldered.
Schematic
S11 Measurement
Sleep current measurement
Based on: http://www.ti.com/lit/an/swra228c/swra228c.pdf
#RFM95W, #ATMEGA328P, #arduino, #lora, #pcb antenna, #inverted f antenna
Parts
35| Qty | Value | Footprint | References |
|---|---|---|---|
| 6 | 100n | Capacitor_SMD:C_0603_1608Metric | C1, C5, C6, C7, C8, C9 |
| 2 | 100k | Resistor_SMD:R_0603_1608Metric | R4, R6 |
| 2 | 10u | Capacitor_SMD:C_0805_2012Metric | C2, C10 |
| 2 | 12p | Capacitor_SMD:C_0603_1608Metric | C11, C12 |
| 2 | 4k7 | Resistor_SMD:R_0603_1608Metric | R1, R2 |
| 2 | Conn_01x01 | MountingHole:MountingHole_2.2mm_M2 | J7, J8 |
| 2 | dnp | Capacitor_SMD:C_0402_1005Metric | C3, C4 |
| 1 | 0R | Inductor_SMD:L_0402_1005Metric | L1 |
| 1 | 10k | Resistor_SMD:R_0603_1608Metric | R7 |
| 1 | 1k | Resistor_SMD:R_0603_1608Metric | R3 |
| 1 | 330k | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 8MHz HC5032/4 | Crystals:Crystal_SMD_5032-4pin_5.0x3.2mm | Y1 |
| 1 | ATMEGA328P-AU | Package_QFP:TQFP-32_7x7mm_P0.8mm | U2 |
| 1 | Conn_01x03 | Connector_PinHeader_2.54mm:PinHeader_1x03_P2.54mm_Vertical | J2 |
| 1 | Conn_01x06 | Pin_Headers:Pin_Header_Straight_1x06_Pitch2.54mm | J6 |
| 1 | Conn_01x09 | Connector_PinSocket_2.54mm:PinSocket_1x09_P2.54mm_Vertical | J1 |
| 1 | D2 | TestPoint:TestPoint_Pad_D1.0mm | J4 |
| 1 | D3 | TestPoint:TestPoint_Pad_D1.0mm | J5 |
| 1 | ISP | Pin_Headers:Pin_Header_Straight_2x03_Pitch2.54mm | J3 |
| 1 | LED | LED_SMD:LED_1206_3216Metric | D1 |
| 1 | LoRa-Logo-Small | kicad-footprints-master:LoRa-Logo-Small | G*** |
| 1 | RFM95W-868S2 | MYLIB:HOPERF_RFM95W_SMD | U1 |
| 1 | RiskeLogo | kicad-footprints-master:RiskeLogo | G*** |
| 1 | SW_Push | kicad-footprints-master:SMD-PushButton-6x3.6mm | SW1 |
Questions
How big is the LoRa Node PCB?
It measures 45 × 53 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LoRa Node use?
35 parts, built around the ATMEGA328P-AU and RFM95W-868S2. The full list of its parts is on this page, with links to each part's symbol and footprint where PCBKit's library has them.
Where can I download the LoRa Node KiCad files?
From the cernohorsky/LoRa-Node repository on GitHub, at the commit this page was made from: the board is LoRaNode.kicad_pcb. PCBKit opens the board in the browser, with nothing to install.
Can I use the LoRa Node design in my own project?
Its repository states no licence, so its author keeps all rights: ask cernohorsky before reusing the design.
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