12/7/2023 0 Comments Teensy 2++ as spi programmerYah, to get all those PCDOS file commands free you can pot (seal in epoxy) a wired and tested microSD with heatsink (metal washer or actual w/fins little heatsink) on one face to prevent heat buildup. I would like it to function as a keyboard also so only atmega32u4 You can solder an sd card and hardwire to an Esp8266 or other 3.3 voltage chip. I already used fingerprint in my project so i cant add another level of code as lack of space You could also consider obfuscating or encrypting the data written to the SD card
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