By Patrick Mullen.We want to thank everyone who stopped by the Cisco Talos booth at DEFCON's Blue Team Village earlier this month. We handed out these badges at our area where we had Snort rules challenges, reverse-Capture the Flag and recruiters ready to answer attendees' career advice questions.Unfortunately, there were two bugs in the board as created, which should be expected when it was created in such a short time, but we have a guide for how you can fix these. Once these bugs are fixed, you'll have a fully functional Digispark clone that can be used for several projects, including impersonating a USB keyboard, as our example sketch does. You can also attach leads to the open jumpers to get full access to all of the pins from the ATtiny85 to drive your own projects.Power is provided directly by the USB port when used as a USB device, by a USB charger, or via J2 at the top of the board. The center pin is GND, the right pin is for regulated for five volts, or the left pin can handle anywhere from 5V to 20V. During Defcon, we powered it with a nine-volt battery for convenience.The first bug is really easy — diode D1 on the lower right of the board has the line indicating the direction for the cathode on the wrong end due to using a faulty schematic.The second bug took a bit more creativity to overcome, but the actual assembly isn’t too difficult and makes the build that much more fun. The issue is that the schematic for the USB port was rotated, so we need to tweak the circuit so everything connects to the right place. I think the end result adds character to the badge and is quite effe ..
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