You might add a 1 uF capacitor across the 3.3V and GND lines close to the SD card.
Most cards will probably work anyway, but the MMC spec recommends a capacitor located close to the socket, to...
Type: Posts; User: PaulStoffregen
You might add a 1 uF capacitor across the 3.3V and GND lines close to the SD card.
Most cards will probably work anyway, but the MMC spec recommends a capacitor located close to the socket, to...
That board was designed for Teensy 2.0, where you do need the buffers to translate the voltage from 5 to 3.3.
I have another simpler board for Teensy 3.0, which also has a place to add a Wiz820io...