“great little devices - fast and lots of I/O, not cheap, but well made and supported.
Currently using 4 to run a big LED system for an outdoor display.”
“I use the Teensy 3.5 in projects where the Teensy LC just doesn't have enough pins. And I must say that if you are looking for a microcontroller with a super small size yet need as many pins as possible, the Teensy 3.5 won't let you down!”