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After trying different approaches I decided to dumb it down to its most basic level. Without any fancy coding or buffers, I'm now just writing the data directly to the SD-card and flushing every 15 seconds which has the risk to loose up to 15 seconds of data i.e. 15 GPS-fixes (1 per second) when cutting off power. The only other time where a potential data ...


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There is a solution with SD card and SD bootloader. You put a bin file on SD card, insert it into the SD adapter and power up the Arduino. The bootloader loads the bin file to flash memory. I use 'avr_boot' SD bootloader by Zevero. It reads a file named firmware.bin from SD card if present and loads it into flash. To generate a bin file for Arduino AVR ...


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There is no specific piece of hardware that does what you ask. There are various options though: Write a new bootloader that uses the USB Host Shield to load data from a USB MSD device then flash it to the internal flash of the MCU (hard to do if you don't know low-level programming) Use an embedded Linux computer (Raspberry Pi, etc) to run avrdude and ...


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