4 layers51.8 × 42 mm
Cansat
hjw1112/Glidesat
Custom devboard with additional components for ESA cansat competition.
67 parts
2 layers61.5 × 18.7 mm
LoRA USBStick
ElectronicCats/CatWAN_USB_Stick50An Open Source USB Stick compatible with LoRa and LoRaWAN with Cortex M0+. To connect, review and analyze packages of LoRa®
- Size
- 61.5 × 18.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 36
- Nets
- 57
- Pads
- 170
- Tracks, vias
- 412, 41
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 8.0 (file 20240108)
- Created
- 2 Jul 2018
- Updated
- 12 Oct 2026
Overview
LoRA USBStick is an open-source printed circuit board by ElectronicCats, from the ElectronicCats/CatWAN_USB_Stick repository on GitHub, published under the GPL-3.0 licence. It is a 2-layer board of 61.5 × 18.7 mm with 36 parts on 57 nets, routed with 412 tracks and 41 vias.
It is built around the RP2040, AP2112K-3.3 and RFM95W-868S2. Its parts include 17 capacitors, 6 resistors, 4 ICs, 2 diodes and 1 connector. It belongs with the radio and wireless boards and the RP2040 boards of this library.
Main components
3
RP2040
LQFN-56(7x7)12bit 133MHz 30 LQFN-56(7x7) Microcontrollers (MCU/MPU/SOC) ROHSRaspberry PiMicrocontrollers (MCU/MPU/SOC)
AP2112K-3.3
SOT253.3V 600mA CMOS Low Dropout Linear Regulator with EnableDiodes IncorporatedUncategorised
RFM95W-868S2
16-SMD16-SMD New Arrivals ROHSHopeRF Micro-electronicsUncategorised
README
README.mdCatWAN USB Stick
Where to buy and learn more
Are you interested in learning how LoRa works at the package level? Debugging your own LoRa hardware and trying to detect where something is wrong? Or maybe you're writing a custom application for your Internet of Things (IoT) network with LoraWAN? We have the perfect tool for you!
This CatWAN USB Stick is programmed with a special firmware image that makes it an easy-to-use LoRa sniffer. You can passively capture the data exchanges between two LoRa devices, capturing with our "LoRa Sniffer" the open-source network analysis tool that we have created to use together.
This device can work in networks LoRaWAN compatible with classes A, B, and C, although currently we do not have a firmware for this way of working, the CatWAN firmware is completely open source and you can find it in our repository along with the schematic. If you want to reprogram this device you can do it through Arduino IDE and its USB port or if you do not have to use a J-Link. ATMEL-ICE or a DIY SWD programmer
This device has a SAMD21 ARM Cortex microcontroller at 48Mhz with native USB 2.1, with 256Kb for programming, compatible with Arduino and Circuit Python.
Check our repository for more details and software downloads!
Main characteristics
- Works with any PC, Raspberry Pi or BeagleBone, even a smartphone or tablet
- Supports packet mode LoRa® (package mode) or LoRaWAN ™ Class A, B and C
- Compatible with The Things Network and other LoRaWAN networks
- Based on the RFM95
- RX LED as reception indicator, programmable by the user
- Easy reprogramming compatible with Arduino and Circuit Python
- Compatible with the App LoRa Sniffer
- Open Source
Specifications
- Connectivity: USB 2.1
- Power Consumption: 140 ma typical TX, 20 ma idle (with power LED)
- Receiver Sensitivity: down to -146 dBm
- TX Power: adjustable up to +18.5 dBm
- Range: up to 15 km coverage in suburban and up to 5 km coverage in urban areas
Pin connections
| Arduino | Port | RFM Function |
|---|---|---|
| 0 | PORTA4 | DIO0 |
| 1 | PORTA23 | DIO1 |
| 2 | PORTA27 | DIO2 |
| 13 | PORTA14 | LED |
| 15 | PORTA15 | DIO5 |
| 17 | PORTA22 | MISO |
| 18 | PORTA18 | MOSI |
| 19 | PORTA19 | SCK |
| 20 | PORTA17 | SS |
How to contribute 
Contributions are welcome!
Please read the document Contribution Manual which will show you how to contribute your changes to the project.
✨ Thanks to all our contributors! ✨
See Electronic Cats CLA for more information.
See the community code of conduct for a vision of the community we want to build and what we expect from it.
Maintainer
Electronic Cats invests time and resources in providing this open-source design design, please support Electronic Cats and open-source hardware by purchasing products from Electronic Cats!
Open Source certified.
[OSHW] MX000006 | Certified open source hardware |
Designed by Electronic Cats.
Firmware released under an GNU AGPL v3.0 license. See the LICENSE file for more information.
Hardware released under an CERN Open Hardware Licence v1.2. See the LICENSE_HARDWARE file for more information.
Electronic Cats is a registered trademark, please do not use if you sell these PCBs.
27 May 2019
Parts
36| Qty | Value | Footprint | References |
|---|---|---|---|
| 10 | 0.1uF | Capacitor_SMD:C_0603_1608Metric | C4, C8, C10, C11, C12, C13, C14, C15, C16, C17 |
| 2 | 10uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C6, C7 |
| 2 | 120R | Resistor_SMD:R_0603_1608Metric | R9, R11 |
| 2 | 1uF | Capacitor_SMD:C_0603_1608Metric | C2, C9 |
| 2 | 27 | Resistor_SMD:R_0603_1608Metric | R3, R4 |
| 2 | 27pF | Capacitor_SMD:C_0603_1608Metric | C1, C3 |
| 1 | 0.1uF | Capacitor_SMD:C_0805_2012Metric_Pad1.15x1.40mm_HandSolder | C5 |
| 1 | 10K | Resistor_SMD:R_0603_1608Metric | R5 |
| 1 | 12Mhz | Crystal:Crystal_SMD_5032-2Pin_5.0x3.2mm | Y1 |
| 1 | 1K | Resistor_SMD:R_0603_1608Metric | R2 |
| 1 | AP2112K-3.3 | Package_TO_SOT_SMD:SOT-23-5 | U3 |
| 1 | Antenna_Shield | agroin:SMA_EDGE | AE1 |
| 1 | BOOT | Jumper:SolderJumper-2_P1.3mm_Open_Pad1.0x1.5mm | JP1 |
| 1 | G*** | kibuzzard-62D459CC | kibuzzard-62D459CC |
| 1 | LOGO | Aesthetics:electronic_cats_logo_8x6 | G*** |
| 1 | ON | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D2 |
| 1 | RFM95W-868S2 | RF_Module:HOPERF_RFM9XW_SMD | U2 |
| 1 | RP2040 | RP2040:RP2040-QFN-56 | U1 |
| 1 | RST | Switches:C455281 | SW3 |
| 1 | Rx | LED_SMD:LED_0805_2012Metric_Pad1.15x1.40mm_HandSolder | D1 |
| 1 | USB_B | Connectors:C46394 | J10 |
| 1 | W25Q16JV | RP2040:W25Q16JVUUIQ | U4 |
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Questions
How big is the LoRA USBStick PCB?
It measures 61.5 × 18.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the LoRA USBStick use?
36 parts, built around the RP2040, AP2112K-3.3 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 USBStick KiCad files?
From the ElectronicCats/CatWAN_USB_Stick repository on GitHub, at the commit this page was made from: the board is Hw/LoRA_USBStick.kicad_pcb and its schematic Hw/LoRA_USBStick.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the LoRA USBStick design in my own project?
Its repository publishes it under the GPL-3.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).