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The Elite C is an alternative to the popular Pro Micro microcontroller often used in split keyboards. It has some important pros over the Pro Micro:

• A through hole mounted USB C port makes it much less prone to breaking than that of the Pro Micro;
• The preinstalled DFU bootloader provides additional protection when flashing the microcontroller;
• Comes with six more I/O pins to work with than the Pro Micro so you'll be able to add many more mods.

The Elite C Low Profile has some important changes and additions when compared to the Elite C rev3:

• The USB C port is now mid-mounted. This shaves off 1.2mm of vertical space, meaning it's 25% thinner than the rev3!
• The VUSB pin is now broken out, meaning it's easier to make modifications that require the use of an external battery or power, like an external USB port or adding bluetooth.
• The reset button is now even lower, to account for the lower footprint of the USB port.
• The blue power LED is now less bright.

You can even use the Elite-C alongside a Pro Micro: Use the Elite-C on the master side of the keyboard, and the Pro Micro on the slave side. This gives you the benefits of both!

Features

• Compatible with all Pro-Micro based PCBs;
• Low profile mid-mounted USB-C port;
• 1.6mm thin PCB makes for a lower profile yet sturdy build;
• ATmega32u4 microcontroller with DFU bootloader;
• 6 additional I/O pins broken out for a total of 24 pins;
• USB pins broken out, including VUSB;
• On-board reset button;
• Includes pin headers to solder the Elite C to your project of choice.

Frequently asked questions

Question: On a split keyboard, can I use the Elite-C as the master and a Pro Micro as the slave?

Answer: You can! They are compatible with one another. Mind though that the Elite C comes with a different bootloader than the Pro Micro, using DFU instead of Catarina. This means that you'll need to pay attention when flashing it: flash the Elite-C with :dfu, and the Pro Micro with :avrdude.

Question: I tried flashing the Elite-C with the QMK Toolbox, but it won't work. How can I fix that?

Answer: You might need to install drivers, or update your existing ones. Please refer to the QMK documentation on Zadig.

Read more

• Why would I want to use an Elite C? for the differences between the Pro Micro and the Elite C, and when to use which controller.
• Why would I want to socket my microcontroller? for reasons why you could choose to socket your microcontroller.