4 layers38.6 × 40.3 mm
Strato connect
kevinlutzer/strato-connect
A RF module you can comunicate with over I2C to send AX.25 formatted data over (G)FSK
49 partsApache-2.0
2 layers14 × 38.7 mm
Programmer
kevinlutzer/strato-connectA RF module you can comunicate with over I2C to send AX.25 formatted data over (G)FSK
- Size
- 14 × 38.7 mm
- Copper layers
- 2
- Thickness
- 1.6 mm
- Parts
- 5
- Nets
- 6
- Pads
- 29
- Tracks, vias
- 9, 0
- Pours
- 1
- Routed
- Yes
- KiCad
- KiCad 7 (file 20221018)
- Created
- 25 May 2023
- Updated
- 6 Mar 2026
Overview
Programmer is an open-source printed circuit board by kevinlutzer, from the kevinlutzer/strato-connect repository on GitHub, published under the Apache-2.0 licence. It is a 2-layer board of 14 × 38.7 mm with 5 parts on 6 nets, routed with 9 tracks and 0 vias.
It belongs with the radio and wireless and interfaces and adapters boards of this library.
README
README.mdStrato Connect
Strato Connect is an RF module used to send AX.25 formatted data with (G)FSK modulation over I2C. Connect a host MCU or computer to this module, and you can communicate with any AX.25 supported receiver up to 100 kilometers line of sight.
Rev 2.0 PCB Todo
- The current boost regulator doesn't really work. We are getting voltage drops when there are current spikes.
- IRQ was not connected.
- RX/TX labels are wrong for the uart port.
- Switch the JST connectors to be the 1.0mm pitch connector type used for QT/QWICC
- Refactor the code to take an interface in for the I2C Controller instead of passing a function pointer
Code
To compile and run tests use: g++ test/test.cpp ax25/ax25.* test/ax25_test.h -lgtest -std=c++17 && ./a.out
To compile code for arduino use: arduino-cli compile -b MiniCore:avr:328 --library=./rf4463,./ax25 --output-dir=bin
Parts
5| Qty | Value | Footprint | References |
|---|---|---|---|
| 2 | MountingHole_Pad | MountingHole:MountingHole_3mm_Pad_Via | H1, H2 |
| 1 | Conn_01x05_Pin | Connector_PinHeader_2.54mm:PinHeader_1x05_P2.54mm_Vertical | J1 |
| 1 | Conn_02x03_Odd_Even | Connector_PinHeader_2.54mm:PinHeader_2x03_P2.54mm_Vertical | J2 |
| 1 | G*** | kibuzzard-64ED132C | kibuzzard-64ED132C |
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Questions
How big is the Programmer PCB?
It measures 14 × 38.7 mm and has 2 copper layers, 1.6 mm thick.
What parts does the Programmer use?
5 parts. 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 Programmer KiCad files?
From the kevinlutzer/strato-connect repository on GitHub, at the commit this page was made from: the board is programmer/programmer.kicad_pcb and its schematic pcb/strato_connect.kicad_sch. PCBKit opens the board in the browser, with nothing to install.
Can I use the Programmer design in my own project?
Its repository publishes it under the Apache-2.0 licence: you may reuse it on that licence's terms (keep the author's notice, and for a copyleft licence share your changes alike).