I have been working on a Teensy 4.1 debugger mod for a month or so now and I figured it was in a good place to share my progress. This project started by de-soldering the MKL02 chip, soldering magnet wire onto each pin of the MKL02 and the Teensy to break them out to 16 pin headers on a breadboard. From there I jumpered the pins which were necessary for the teensy to function while leaving the J-tag pins free to be used by a J-Link.
I was successful in programming and debugging using PlatformIO so I continued the project by designing a flex pcb which could be soldered onto the teensy QFN pads. This first attempt failed as too much of the pads were cut and upon soldering they came right off.
Which brings us to the current revision. Fully functioning Teensy 4.1 debugging!
If you see this Paul, I would love for debugging on the next Teensy to be a bit easier! Although this has been an interesting/fun project to work on so thanks for that.
I was successful in programming and debugging using PlatformIO so I continued the project by designing a flex pcb which could be soldered onto the teensy QFN pads. This first attempt failed as too much of the pads were cut and upon soldering they came right off.
Which brings us to the current revision. Fully functioning Teensy 4.1 debugging!
If you see this Paul, I would love for debugging on the next Teensy to be a bit easier! Although this has been an interesting/fun project to work on so thanks for that.