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SD Shields
TeensyUser edited this page Mar 21, 2020
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Arduino - SD shields often have level converters builtin.
These are
- not needed as all Teensy 3.x + teensy 4 work with 3.3V and
- lead to problems because the level converters are usually too slow for Teensy.
Teensy is a PJRC trademark. Notes here are for reference and will typically refer to the ARM variants unless noted.