When comparing Teensy 3.2 vs RedBoard, the Slant community recommends Teensy 3.2 for most people. In the question“What are the best development boards?” Teensy 3.2 is ranked 2nd while RedBoard is ranked 5th. The most important reason people chose Teensy 3.2 is:
The Teensy board is easy to set-up and start using with Teensyduino. Even beginners will have no trouble doing it.
Ranked in these QuestionsQuestion Ranking
Pros
Pro Very easy to set up, even for beginners
The Teensy board is easy to set-up and start using with Teensyduino. Even beginners will have no trouble doing it.
Pro Cheap
Less expensive than an Uno
Pro Uno Compatibility
If it can run on an Uno, it can probably run on this
Cons
Con Additional hardware is needed to connect to peripherals that are not 3.3V
This board only has 3.3V outputs, which is unsuitable to interact with several peripherals, which are either 5V or 10V. To connect to those, you need to get additional hardware.
Con Mini-USB
Sparkfun, Y no Micro-USB?