Well the data are in. I tested my Teensy in another circuit with different program...and it works fine.
So...when I blew up Teensy #1, it took out some chips downstream. Thankfully I put all my chips in sockets so...
I only put the 12 volts on D15, nothing else. Had I put it on Vin...I would have blown everything on the board...all TTL 5 volt devices. The only way I think of ensuring my spare Teensy is working is by using it in...
Arrrggghh! Thanks defragster. I was hoping it would be the opposite. I'll start checking downstream of the logic chips. Better pull out the schematic.
Two photos: pcb layout and board with Teensy at upper left.
Since most of the questions here are quite intelligent, let me ask a stupid one.
I've been working with electronics for ...50 years at least, yet still managed to blow up a Teensy by applying 12 volts to a digital...
I have an outdoor 16x32 matrix display that runs on a Teensy3.2 MCU. I'd like to be able to remote program it using Bluetooth or wifi. I had a USB cable sticking out of the display but the salty ocean air corroded it...
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