lincolnwang

Hey guys, I reflowed the oscillators on three Teensy boards that previously showed the ARM JTAG failure, without replacing any parts, and they all started working again. I am now able to upload firmware, power cycle each board about 20 times...

Thanks for the reply. As @defragster and @jmarsh point out, it is actually ARM JTAG or SWD failure. In our system: We use the Teensy to send PWM signals to motor drivers and read encoder signals from the motors. All signals are strictly 3.3V...

Thanks for the details. What do you think could be the reason for the increasing number of units having this issue? Also, I don’t think we see this issue recurring in the same system once we swap the Teensy. In our system: We use the Teensy to...

I was referring Paul's answer here https://forum.pjrc.com/index.php?threads/what-does-a-blinking-led-on-teensy-4-1-mean-when-program-mode-button-is-pressed.71879/post-318671

Hi, We have been using Teensy 4.1 for over 2 years for a robotic project without major issues. But recently (last 4 months) we have started seeing more Teensy 4.1 having flash memory chip failure (4 quick blinks in red LED) after running for a...