40% Keyboards A blog about small mechanical keyboards. Home Firmware Parts Vendors corrects IE6 width calculation Monday, January 22, 2018 The Lobot is my third version of a Pro Micro ISP programmer. The first version used a Pro Micro running the Arduino ISP sketch. The second version was a Raspberry Pi 0 using it's GPIO pins. I use these to replace the Arduino caterina bootloader with the standard Atmel DFU bootloader. The caterina bootloader works fine when used with the Arduino IDE. It is automatic. However when being programmed outside of Arduino you have to manually deal with the reset timing which many people have problems with. The DFU bootloader is much simpler, once reset into bootloader m...