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+---
+title: SD Card logging
+description: 
+published: true
+date: 2021-10-12T05:18:25.120Z
+tags: sd, logging, dropbear
+editor: markdown
+dateCreated: 2021-10-12T05:18:25.120Z
+---
+
+# SD Card logging
+Logging of data to an SD card is currently under development and supports Teensy based systems only. 
+
+## Requirements
+* Teensy based Speeduino ECU (Eg Dropbear)
+* 4gb minimum SD card. 250mb must be free on this to begin a logging session
+* SD card must be formatted with the ExFAT filesystem. Speeduino uses certain features of ExFAT that are not available on FAT16/32
+
+
+